Pub Date : 2017-08-01DOI: 10.4067/S0718-19572017000200001
E. Cuevas
espanolLas tortugas marinas son especies de grandes vertebrados que tienen un ciclo de vida complejo en el que ocupan diversos habitats durante sus distintos estadios de vida. Tal complejidad impone retos para el estudio y conocimiento de sus poblaciones, y por decadas numerosas investigaciones se han dedicado a entender los factores que determinan la seleccion y uso de los recursos que requieren en sus diferentes etapas. La concepcion a una escala espacial y temporal de los esfuerzos de investigacion es de suma trascendencia para obtener informacion robusta y pertinente sobre los procesos de seleccion de sus habitats. El objetivo de esta revision fue analizar diferentes escalas y aproximaciones abordadas para la evaluacion de los procesos de seleccion de playas de anidacion, sitios de anidacion y habitats de alimentacion por las tortugas marinas, considerando algunas de las implicaciones biologicas, ecologicas y evolutivas asociadas a dichos procesos. A partir de resultados publicados se analizan algunos de los resultados reportados y las implicaciones que estos procesos tienen en temas de conservacion y manejo de sus poblaciones y habitats criticos. El estudio de los procesos de seleccion y uso de los habitats criticos que ocupan las tortugas marinas es una linea actualmente vigente, pertinente y de alta relevancia, a traves de la cual se reitera la importancia estrategica y fundamental de estudios de monitoreo a largo plazo, unica manera de evaluar de forma contundente modificaciones en sus poblaciones y habitats a escalas espaciales y temporales distintas. EnglishMarine turtles are large vertebrates with a complex life cycle along which they occupy several habitats in their different stages. This complexity imposes challenges for the study and knowledge of their populations, and for decades numerous studies have targeted to understand the factors that determine the selection and use of the resources they require at their different stages. The inclusion of the spatial and temporal scales in the conception of the research efforts is of the highest transcendence to obtain robust and pertinent information about the habitat selection processes. The objective of this revision was to analyze different scales and approaches used to evaluate the selection processes of nesting beaches, nesting sites and feeding habitats by sea turtles, considering some of the biological, ecological and evolutive implications linked to these processes. Based on the available literature, some of the reported results are analyzed in terms of their implications for conservation and management of their populations and the critical habitats they occupy. The study of the processes involved in the selection and use of the critical habitats that sea turtles occupy is nowadays an active, pertinent and of highest relevance; fact that reassert the strategic and fundamental importance of long time monitoring studies, as the only way to evaluate in a convincing way alterations of th
{"title":"Dimensiones espacial y temporal de los procesos de selección de hábitats críticos por las tortugas marinas","authors":"E. Cuevas","doi":"10.4067/S0718-19572017000200001","DOIUrl":"https://doi.org/10.4067/S0718-19572017000200001","url":null,"abstract":"espanolLas tortugas marinas son especies de grandes vertebrados que tienen un ciclo de vida complejo en el que ocupan diversos habitats durante sus distintos estadios de vida. Tal complejidad impone retos para el estudio y conocimiento de sus poblaciones, y por decadas numerosas investigaciones se han dedicado a entender los factores que determinan la seleccion y uso de los recursos que requieren en sus diferentes etapas. La concepcion a una escala espacial y temporal de los esfuerzos de investigacion es de suma trascendencia para obtener informacion robusta y pertinente sobre los procesos de seleccion de sus habitats. El objetivo de esta revision fue analizar diferentes escalas y aproximaciones abordadas para la evaluacion de los procesos de seleccion de playas de anidacion, sitios de anidacion y habitats de alimentacion por las tortugas marinas, considerando algunas de las implicaciones biologicas, ecologicas y evolutivas asociadas a dichos procesos. A partir de resultados publicados se analizan algunos de los resultados reportados y las implicaciones que estos procesos tienen en temas de conservacion y manejo de sus poblaciones y habitats criticos. El estudio de los procesos de seleccion y uso de los habitats criticos que ocupan las tortugas marinas es una linea actualmente vigente, pertinente y de alta relevancia, a traves de la cual se reitera la importancia estrategica y fundamental de estudios de monitoreo a largo plazo, unica manera de evaluar de forma contundente modificaciones en sus poblaciones y habitats a escalas espaciales y temporales distintas. EnglishMarine turtles are large vertebrates with a complex life cycle along which they occupy several habitats in their different stages. This complexity imposes challenges for the study and knowledge of their populations, and for decades numerous studies have targeted to understand the factors that determine the selection and use of the resources they require at their different stages. The inclusion of the spatial and temporal scales in the conception of the research efforts is of the highest transcendence to obtain robust and pertinent information about the habitat selection processes. The objective of this revision was to analyze different scales and approaches used to evaluate the selection processes of nesting beaches, nesting sites and feeding habitats by sea turtles, considering some of the biological, ecological and evolutive implications linked to these processes. Based on the available literature, some of the reported results are analyzed in terms of their implications for conservation and management of their populations and the critical habitats they occupy. The study of the processes involved in the selection and use of the critical habitats that sea turtles occupy is nowadays an active, pertinent and of highest relevance; fact that reassert the strategic and fundamental importance of long time monitoring studies, as the only way to evaluate in a convincing way alterations of th","PeriodicalId":54475,"journal":{"name":"Revista De Biologia Marina Y Oceanografia","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4067/S0718-19572017000200001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49285623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-01DOI: 10.4067/S0718-19572017000200012
Margarita Pérez-Valdés, Diego Figueroa-Aguilera, C. Rojas-Pérez
espanolLa ascidia solitaria Pyura chilensis, es considerada un recurso de importancia economica en el sector pesquero artesanal. Este organismo tiene una gran capacidad para colonizar sustratos artificiales, formando parte de la fauna incrustante en lineas de cultivo de ostreidos y moluscos, afectando la eficiencia de crecimiento de estos recursos. Por esta razon, es necesario conocer aspectos biologico - reproductivos de P. chilensis a fin de generar informacion para la futura implementacion de un plan de manejo, de conservacion o de cultivo de este recurso en la Region de Los Lagos, Chile. El objetivo de este estudio fue investigar el ciclo reproductivo y patrones de asentamiento de P. chilensis, analizando el indice de condicion e histologia gonadal de organismos procedentes de un sistema de cultivo de mitilidos ubicado en Estero Huito, Calbuco (41°43'S;73°09'W), durante 12 meses. Adicionalmente se analizo la preferencia de sustrato de larvas de P. chilensis, usando dos superficies artificiales. El Indice de condicion (masa corporal-distancia sifonal) mostro un aumento entre junio y septiembre, coincidiendo con un periodo de baja temperatura en primavera (organismos en estado IV); aun cuando la presencia de reclutas entre noviembre y junio estaria indicando posibles eventos de desove en otras estaciones. Se observo que entre el 40 y 100% de los organismos muestreados presentaron gonadas en estado II y/o III durante el periodo de estudio, lo cual sugiere una gametogenesis continua. El asentamiento larval fue mayor en sustrato rugoso obscuro (malla raschel) que en la superficie de plastico. Se concluye que en la zona de estudio es posible tener reclutamiento durante todo el ano con diferentes niveles de intensidad. Esta informacion permitiria planificar la ubicacion de colectores, para la captacion de reclutas en distintas epocas, generando una produccion continua de P. chilensis y disminuyendo la infestacion de otros sustratos. EnglishThe solitary sea squirt Pyura chilensis, is considered a resource of economic importance in the artisanal fisheries sector. This organism has a great capability to colonize artificial substrates, taking part in the encrusting fauna in long-line culture systems of ostreid and mussel, affecting the growth efficiency of these resources. For this reason, is necessary to know biological - reproductive aspects of P. chilensis in order to generate new information for future implementation of management plan, conservation and cultivation of this resource in the Region de Los Lagos, Chile. The purpose of this study was to investigate the reproductive cycle and settlement patterns of P. chilensis, analyzing the condition index and gonadal histology of organisms which come from a mussel farming system in Estero Huito, Calbuco (41°43'S;73°09'W) during 12 months. In addition, the settlement substrate preference of P. chilensis larvae was examined, using two artificial surfaces. The condition index (wet mass-siphonal distance)
{"title":"Ciclo reproductivo de la ascidia Pyura chilensis (Urochordata:Ascidiacea) procedente de líneas de cultivo de mitílidos","authors":"Margarita Pérez-Valdés, Diego Figueroa-Aguilera, C. Rojas-Pérez","doi":"10.4067/S0718-19572017000200012","DOIUrl":"https://doi.org/10.4067/S0718-19572017000200012","url":null,"abstract":"espanolLa ascidia solitaria Pyura chilensis, es considerada un recurso de importancia economica en el sector pesquero artesanal. Este organismo tiene una gran capacidad para colonizar sustratos artificiales, formando parte de la fauna incrustante en lineas de cultivo de ostreidos y moluscos, afectando la eficiencia de crecimiento de estos recursos. Por esta razon, es necesario conocer aspectos biologico - reproductivos de P. chilensis a fin de generar informacion para la futura implementacion de un plan de manejo, de conservacion o de cultivo de este recurso en la Region de Los Lagos, Chile. El objetivo de este estudio fue investigar el ciclo reproductivo y patrones de asentamiento de P. chilensis, analizando el indice de condicion e histologia gonadal de organismos procedentes de un sistema de cultivo de mitilidos ubicado en Estero Huito, Calbuco (41°43'S;73°09'W), durante 12 meses. Adicionalmente se analizo la preferencia de sustrato de larvas de P. chilensis, usando dos superficies artificiales. El Indice de condicion (masa corporal-distancia sifonal) mostro un aumento entre junio y septiembre, coincidiendo con un periodo de baja temperatura en primavera (organismos en estado IV); aun cuando la presencia de reclutas entre noviembre y junio estaria indicando posibles eventos de desove en otras estaciones. Se observo que entre el 40 y 100% de los organismos muestreados presentaron gonadas en estado II y/o III durante el periodo de estudio, lo cual sugiere una gametogenesis continua. El asentamiento larval fue mayor en sustrato rugoso obscuro (malla raschel) que en la superficie de plastico. Se concluye que en la zona de estudio es posible tener reclutamiento durante todo el ano con diferentes niveles de intensidad. Esta informacion permitiria planificar la ubicacion de colectores, para la captacion de reclutas en distintas epocas, generando una produccion continua de P. chilensis y disminuyendo la infestacion de otros sustratos. EnglishThe solitary sea squirt Pyura chilensis, is considered a resource of economic importance in the artisanal fisheries sector. This organism has a great capability to colonize artificial substrates, taking part in the encrusting fauna in long-line culture systems of ostreid and mussel, affecting the growth efficiency of these resources. For this reason, is necessary to know biological - reproductive aspects of P. chilensis in order to generate new information for future implementation of management plan, conservation and cultivation of this resource in the Region de Los Lagos, Chile. The purpose of this study was to investigate the reproductive cycle and settlement patterns of P. chilensis, analyzing the condition index and gonadal histology of organisms which come from a mussel farming system in Estero Huito, Calbuco (41°43'S;73°09'W) during 12 months. In addition, the settlement substrate preference of P. chilensis larvae was examined, using two artificial surfaces. The condition index (wet mass-siphonal distance) ","PeriodicalId":54475,"journal":{"name":"Revista De Biologia Marina Y Oceanografia","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4067/S0718-19572017000200012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46680138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-01DOI: 10.4067/S0718-19572017000200016
Karen M Zepeda-Borja, Christian D. Ortega‐Ortiz, E. Torres-Orozco, A. Olivos-Ortiz
espanolEn este estudio se describe la distribucion espacio-temporal de tortugas marinas y su relacion con parametros oceanograficos en el Pacifico Central Mexicano (PCM) durante el 2010 (invierno, primavera y otono). Los resultados muestran variaciones en la distribucion de tortugas marinas. En invierno, la distribucion de tortugas fue homogenea en areas costeras y oceanicas; asociadas a la presencia de frentes termicos debido a la interaccion de una corriente de agua calida del sur y la intrusion de agua fria proveniente del noroeste, asi como con los limites de un giro ciclonico. En primavera, la distribucion de tortugas se concentro hacia la zona costera y parte central de la zona oceanica, donde prevalecieron los efectos de una surgencia y los limites de un giro ciclonico. El mismo patron de distribucion ocurrio al inicio de otono, mientras que las condiciones oceanograficas cambiaron para la segunda semana de muestreo, cuando ocurrio la formacion de una surgencia costera. Los eventos de apareamiento solo se registraron durante otono para la tortuga golfina (Lepidochelys olivacea), la especie dominante de la region. Se concluye que en otono el patron de distribucion de tortugas marinas fue hacia la zona costera del PCM, y se relaciono con actividades de reproduccion; mientras que en invierno y primavera este patron tendio a la region central/oceanica vinculado potencialmente con actividades de forrajeo. EnglishIn this study we describe the spatial and temporal distribution of sea turtles and their association with oceanographic parameters in waters of the Mexican Central Pacific (MCP) during 2010 (winter, spring and autumn). Our results showed variations in sea turtle distribution through the sampling year. Sea turtle distribution was homogeneous in coastal and oceanic areas during winter; there was an association with thermal fronts generated by a current of cold water flowing from the northwest and a warm current coming from the south, as well as with the boundaries of a cyclonic gyre. Sea turtles were distributed in the coastal zone and the central part of the oceanic zone in spring, where the effects of a cyclonic gyre and coastal upwelling prevailed. The same distribution trend was recorded at the beginning of autumn, whereas oceanographic characteristics changed during the second sampling week, when upwelling occurred. Mating events were only recorded in autumn for olive ridley sea turtles (Lepidochelys olivacea), the dominant species in the region. It was concluded that sea turtles were distributed in the coastal zone of MCP waters in autumn due to reproductive activities, whereas in winter and spring sea turtles were distributed towards the central/oceanic region, potentially related to foraging activities.
{"title":"Spatial and temporal distribution of sea turtles related to sea surface temperature and chlorophyll-a in Mexican Central Pacific waters","authors":"Karen M Zepeda-Borja, Christian D. Ortega‐Ortiz, E. Torres-Orozco, A. Olivos-Ortiz","doi":"10.4067/S0718-19572017000200016","DOIUrl":"https://doi.org/10.4067/S0718-19572017000200016","url":null,"abstract":"espanolEn este estudio se describe la distribucion espacio-temporal de tortugas marinas y su relacion con parametros oceanograficos en el Pacifico Central Mexicano (PCM) durante el 2010 (invierno, primavera y otono). Los resultados muestran variaciones en la distribucion de tortugas marinas. En invierno, la distribucion de tortugas fue homogenea en areas costeras y oceanicas; asociadas a la presencia de frentes termicos debido a la interaccion de una corriente de agua calida del sur y la intrusion de agua fria proveniente del noroeste, asi como con los limites de un giro ciclonico. En primavera, la distribucion de tortugas se concentro hacia la zona costera y parte central de la zona oceanica, donde prevalecieron los efectos de una surgencia y los limites de un giro ciclonico. El mismo patron de distribucion ocurrio al inicio de otono, mientras que las condiciones oceanograficas cambiaron para la segunda semana de muestreo, cuando ocurrio la formacion de una surgencia costera. Los eventos de apareamiento solo se registraron durante otono para la tortuga golfina (Lepidochelys olivacea), la especie dominante de la region. Se concluye que en otono el patron de distribucion de tortugas marinas fue hacia la zona costera del PCM, y se relaciono con actividades de reproduccion; mientras que en invierno y primavera este patron tendio a la region central/oceanica vinculado potencialmente con actividades de forrajeo. EnglishIn this study we describe the spatial and temporal distribution of sea turtles and their association with oceanographic parameters in waters of the Mexican Central Pacific (MCP) during 2010 (winter, spring and autumn). Our results showed variations in sea turtle distribution through the sampling year. Sea turtle distribution was homogeneous in coastal and oceanic areas during winter; there was an association with thermal fronts generated by a current of cold water flowing from the northwest and a warm current coming from the south, as well as with the boundaries of a cyclonic gyre. Sea turtles were distributed in the coastal zone and the central part of the oceanic zone in spring, where the effects of a cyclonic gyre and coastal upwelling prevailed. The same distribution trend was recorded at the beginning of autumn, whereas oceanographic characteristics changed during the second sampling week, when upwelling occurred. Mating events were only recorded in autumn for olive ridley sea turtles (Lepidochelys olivacea), the dominant species in the region. It was concluded that sea turtles were distributed in the coastal zone of MCP waters in autumn due to reproductive activities, whereas in winter and spring sea turtles were distributed towards the central/oceanic region, potentially related to foraging activities.","PeriodicalId":54475,"journal":{"name":"Revista De Biologia Marina Y Oceanografia","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47122186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-08-01DOI: 10.4067/S0718-19572017000200020
M. A. S. Martín, Elson Leal, T. M. Canales
Data about Brama australis distribution along the Chilean coast and the South Pacific is scarce and varied. The aim of this study was to provide new information concerning the spatial and bathymetric occurrence of B. australis in the Southern Pacific Ocean. To do this, all data and information available in scientific literature regarding Chile and the South Pacific Ocean were collected, including fishery dependent and independent as well as bycatch data. B. australis could be present in a wider latitudinal range from the 27° to 57°S, including fjords, open ocean, and along a band in the Pacific Ocean, from New Zealand up to the Chilean coast. Thus, B australis shows a wider distribution compared to previous studies especially towards the Southern Chile. Bathymetrically the species occurs with a higher frequency in depths between 100 and 250 m, however a low occurrence was recorded over 500 m depth. A potential association of B. australis with the West Wind Drift, which could influence the distribution of the species in the Pacific Ocean and off the Chilean coast, is hypothesized. Further work includes taxonomic studies to confirm the presence of the same species in the distributional area proposed here.
{"title":"Spatial and bathymetric occurrence of Brama australis off the Chilean Coast and in the South Pacific Ocean","authors":"M. A. S. Martín, Elson Leal, T. M. Canales","doi":"10.4067/S0718-19572017000200020","DOIUrl":"https://doi.org/10.4067/S0718-19572017000200020","url":null,"abstract":"Data about Brama australis distribution along the Chilean coast and the South Pacific is scarce and varied. The aim of this study was to provide new information concerning the spatial and bathymetric occurrence of B. australis in the Southern Pacific Ocean. To do this, all data and information available in scientific literature regarding Chile and the South Pacific Ocean were collected, including fishery dependent and independent as well as bycatch data. B. australis could be present in a wider latitudinal range from the 27° to 57°S, including fjords, open ocean, and along a band in the Pacific Ocean, from New Zealand up to the Chilean coast. Thus, B australis shows a wider distribution compared to previous studies especially towards the Southern Chile. Bathymetrically the species occurs with a higher frequency in depths between 100 and 250 m, however a low occurrence was recorded over 500 m depth. A potential association of B. australis with the West Wind Drift, which could influence the distribution of the species in the Pacific Ocean and off the Chilean coast, is hypothesized. Further work includes taxonomic studies to confirm the presence of the same species in the distributional area proposed here.","PeriodicalId":54475,"journal":{"name":"Revista De Biologia Marina Y Oceanografia","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48298093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-01DOI: 10.4067/S0718-19572017000100010
J. Leyva, M. Martínez-Porchas, Francisco Vargas-Albores, Jorge Hernández-López, Teresa Gollas-Galván
The presence of flagellar systems is common in several free-living bacteria; however, these have been considered absent in bacteria belonging to the Rickettsiales order. Candidatus Hepatobacter penaei is a marine Rickettsial bacterium described as a motile microorganism propelled by a flagellar system that facilitates infection. This bacterium represents a major risk of infection in shrimp farms. Therefore, the objective of this study was to determine the presence of genes encoding the flagellar system proteins of the bacterium Candidatus Hepatobacter penaei. The genomic sequence of the GenBank database with accession number NZ_JQAJ00000000.1, was analyzed. After genes were identified, amino acid sequences were deduced. The amino acid sequences of the flagellar system were identified by BLASTP through multiple alignment of conserved domains. Subsequently, a modeling process of FlhA protein was performed and compared with the protein reported for Oceanibaculum indicum considering the formation of -helixes and -sheets. Results showed the presence of some amino acid sequences of the genes related to bacterial flagellar system as MotA FliG, FliN, FliL FlhA, FlhB, FliQ FliR and FliF. Finally, these results suggest that Candidatus Hepatobacter penaei is a rickettsial bacterium having a flagellar system, which possibly confers motility and take part in the infection process in hosts such as marine crustaceans.
{"title":"Análisis bioinformático del sistema flagelar de la alphaproteobacteria tipo rickettsia Candidatus Hepatobacter penaei","authors":"J. Leyva, M. Martínez-Porchas, Francisco Vargas-Albores, Jorge Hernández-López, Teresa Gollas-Galván","doi":"10.4067/S0718-19572017000100010","DOIUrl":"https://doi.org/10.4067/S0718-19572017000100010","url":null,"abstract":"The presence of flagellar systems is common in several free-living bacteria; however, these have been considered absent in bacteria belonging to the Rickettsiales order. Candidatus Hepatobacter penaei is a marine Rickettsial bacterium described as a motile microorganism propelled by a flagellar system that facilitates infection. This bacterium represents a major risk of infection in shrimp farms. Therefore, the objective of this study was to determine the presence of genes encoding the flagellar system proteins of the bacterium Candidatus Hepatobacter penaei. The genomic sequence of the GenBank database with accession number NZ_JQAJ00000000.1, was analyzed. After genes were identified, amino acid sequences were deduced. The amino acid sequences of the flagellar system were identified by BLASTP through multiple alignment of conserved domains. Subsequently, a modeling process of FlhA protein was performed and compared with the protein reported for Oceanibaculum indicum considering the formation of -helixes and -sheets. Results showed the presence of some amino acid sequences of the genes related to bacterial flagellar system as MotA FliG, FliN, FliL FlhA, FlhB, FliQ FliR and FliF. Finally, these results suggest that Candidatus Hepatobacter penaei is a rickettsial bacterium having a flagellar system, which possibly confers motility and take part in the infection process in hosts such as marine crustaceans.","PeriodicalId":54475,"journal":{"name":"Revista De Biologia Marina Y Oceanografia","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4067/S0718-19572017000100010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42139398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-01DOI: 10.4067/S0718-19572017000100004
Juan Antonio de Anda-Montañez, S. Salas, Gabriela Galindo-Cortes
espanolLas pesquerias de pelagicos menores se han caracterizado por sus grandes fluctuaciones en abundancia, debido a factores ambientales, regimenes de captura, patrones de reproduccion, entre otros. Dada esta complejidad, el desarrollo de esquemas de manejo para la pesqueria de sardina requiere de la evaluacion del impacto de diferentes estrategias de manejo, considerando la incertidumbre asociada con el comportamiento biologico de los recursos y el rendimiento economico de las pesquerias. Una forma de predecir dichos cambios en la abundancia, es a traves de procesos de simulacion bajo diferentes escenarios. En este estudio, se uso un modelo bioeconomico dinamico estructurado por edad de la pesqueria de sardina del Pacifico (Sardinops sagax) de la peninsula de Baja California en Mexico para evaluar el efecto de cambios en el reclutamiento sobre diferentes variables de estado (biomasa, valor presente neto y captura). Se considero riesgo e incertidumbre asociada a parametros sensibles (mortalidad natural, precio y capturabilidad). Se empleo el enfoque precautorio para evaluar la respuesta de los responsables de tomar decisiones con diferente actitud al riesgo (adverso, neutral y buscador de riesgo) bajo diferentes escenarios, desde acceso abierto hasta restricciones en el esfuerzo pesquero. Los resultados mostraron que las estrategias de manejo que involucraron restricciones en el esfuerzo pesquero resultaron en una baja probabilidad (0-7, expresado en porcentaje) de exceder los puntos de referencia limite (PRL) comparado con aquellas bajo condiciones de acceso abierto o captura en rendimiento maximo sostenible (RMS) y cuotas de captura (13-60%). El analisis enfatiza las ventajas de utilizar un enfoque que incorpore el riesgo y la incertidumbre para la generacion de estrategias de manejo de las pesquerias pelagicas con alta exposicion a condiciones inciertas. EnglishSmall pelagic fisheries have been characterized by large fluctuations in abundance due to environmental factors, harvest regimes, and reproduction patterns, among others. Given this complexity, the development of management schemes for sardine fisheries requires an evaluation of the impact of different management strategies. The evaluation of any management scheme would need to account for the uncertainty associated with the biological behavior of resources and economic performance of the fisheries to predict changes in resource abundance through simulation of alternative scenarios. In this study, an age-structured dynamic bioeconomic model of the Pacific sardine (Sardinops sagax) fishery off the Baja California peninsula in Mexico was used. The model assessed the effect of changes in recruitment over several state variables (biomass, net present value and catch). An analysis of risk and uncertainty allowed the identification of sensitive parameters (natural mortality, price and catchability) and a precautionary approach was used to evaluate the response of decision-makers with differ
{"title":"Dealing with dynamics and uncertainty of small pelagic fisheries: bioeconomic analysis of manager’s responses to alternative management strategies","authors":"Juan Antonio de Anda-Montañez, S. Salas, Gabriela Galindo-Cortes","doi":"10.4067/S0718-19572017000100004","DOIUrl":"https://doi.org/10.4067/S0718-19572017000100004","url":null,"abstract":"espanolLas pesquerias de pelagicos menores se han caracterizado por sus grandes fluctuaciones en abundancia, debido a factores ambientales, regimenes de captura, patrones de reproduccion, entre otros. Dada esta complejidad, el desarrollo de esquemas de manejo para la pesqueria de sardina requiere de la evaluacion del impacto de diferentes estrategias de manejo, considerando la incertidumbre asociada con el comportamiento biologico de los recursos y el rendimiento economico de las pesquerias. Una forma de predecir dichos cambios en la abundancia, es a traves de procesos de simulacion bajo diferentes escenarios. En este estudio, se uso un modelo bioeconomico dinamico estructurado por edad de la pesqueria de sardina del Pacifico (Sardinops sagax) de la peninsula de Baja California en Mexico para evaluar el efecto de cambios en el reclutamiento sobre diferentes variables de estado (biomasa, valor presente neto y captura). Se considero riesgo e incertidumbre asociada a parametros sensibles (mortalidad natural, precio y capturabilidad). Se empleo el enfoque precautorio para evaluar la respuesta de los responsables de tomar decisiones con diferente actitud al riesgo (adverso, neutral y buscador de riesgo) bajo diferentes escenarios, desde acceso abierto hasta restricciones en el esfuerzo pesquero. Los resultados mostraron que las estrategias de manejo que involucraron restricciones en el esfuerzo pesquero resultaron en una baja probabilidad (0-7, expresado en porcentaje) de exceder los puntos de referencia limite (PRL) comparado con aquellas bajo condiciones de acceso abierto o captura en rendimiento maximo sostenible (RMS) y cuotas de captura (13-60%). El analisis enfatiza las ventajas de utilizar un enfoque que incorpore el riesgo y la incertidumbre para la generacion de estrategias de manejo de las pesquerias pelagicas con alta exposicion a condiciones inciertas. EnglishSmall pelagic fisheries have been characterized by large fluctuations in abundance due to environmental factors, harvest regimes, and reproduction patterns, among others. Given this complexity, the development of management schemes for sardine fisheries requires an evaluation of the impact of different management strategies. The evaluation of any management scheme would need to account for the uncertainty associated with the biological behavior of resources and economic performance of the fisheries to predict changes in resource abundance through simulation of alternative scenarios. In this study, an age-structured dynamic bioeconomic model of the Pacific sardine (Sardinops sagax) fishery off the Baja California peninsula in Mexico was used. The model assessed the effect of changes in recruitment over several state variables (biomass, net present value and catch). An analysis of risk and uncertainty allowed the identification of sensitive parameters (natural mortality, price and catchability) and a precautionary approach was used to evaluate the response of decision-makers with differ","PeriodicalId":54475,"journal":{"name":"Revista De Biologia Marina Y Oceanografia","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4067/S0718-19572017000100004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44528933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-01DOI: 10.4067/S0718-19572017000100011
J. Ponce‐Palafox, Héctor M. Esparza-Leal, J. L. Arredondo-Figueroa, C. Martínez-Palacios, L. Ross
espanolEl objetivo del estudio fue evaluar el efecto de 4 niveles de proteina (20, 30, 40 y 50%) y lipidos (2, 4, 8 y 16%) sobre la magnitud y duracion de la accion dinamica especifica (ADE) y la excrecion nitrogenada en subadultos del camaron blanco Litopenaeus vannamei usando una camara metabolica controlada por computadora (respirometro de flujo continuo). Se determino la tasa de consumo de oxigeno a intervalos de 1 hora hasta que la tasa de consumo de oxigeno postprandial regreso al nivel de pre-alimentacion. Los camarones alimentados con todas las dietas tienen una tasa de respiracion significativamente alta despues de la alimentacion debida a la ADE. El consumo de oxigeno, el coeficiente de ADE y la magnitud de ADE aumento notablemente con el incremento del contenido de proteina en la dieta. Los camarones alimentados con el 20% de proteina en la dieta tuvieron el nivel mas bajo de respiracion de pre y post-alimentacion y la mas baja ADE. Un cambio significativo en el coeficiente de ADE relativo a la energia digestible no fue demostrado para cada uno de los niveles de lipidos. Adicionalmente, la excrecion nitrogenada aumento con el incremento del nivel de proteina en la dieta, pero no con el incremento del nivel de lipidos. Al estimar la ADE de subadultos se encontro que la tasa metabolica estandar (SMR) fue menor que la reportada para juveniles y postlarvas de L. vannamei. EnglishThe study aimed to evaluate the effect of 4 levels of dietary protein (20, 30, 40 and 50%) and lipids (2, 4, 8 and 16%) on the magnitude and duration of specific dynamic action (SDA) and postprandial nitrogen excretion in the subadult white shrimp Litopenaeus vannamei using computer-controlled metabolic chambers (continuous-flow respirometer). We determined the oxygen consumption rate at 1 h intervals until the postprandial oxygen consumption rate returned to the pre-feeding level. Shrimp fed all the diets had significantly higher respiration rates after feeding due to the SDA. Oxygen consumption, the SDA coefficient and the SDA magnitude increased notably with increasing dietary protein content. Shrimp fed the 20% protein diet had the lowest levels of pre- and post-feeding respiration and the smallest SDA. A significant change in the SDA coefficient relative to each lipid level was not demonstrable. Additionally, nitrogenous excretion increased with an increase of dietary protein but not with an increase of lipid level. By estimating the SDA of subadults, the response to standard metabolic rate (SMR) was lower than that reported for juveniles and postlarva white shrimp.
{"title":"The effect of protein and lipid level on the specific dynamic action and post-prandial nitrogen excretion in subadult of white shrimp Litopenaeus vannamei","authors":"J. Ponce‐Palafox, Héctor M. Esparza-Leal, J. L. Arredondo-Figueroa, C. Martínez-Palacios, L. Ross","doi":"10.4067/S0718-19572017000100011","DOIUrl":"https://doi.org/10.4067/S0718-19572017000100011","url":null,"abstract":"espanolEl objetivo del estudio fue evaluar el efecto de 4 niveles de proteina (20, 30, 40 y 50%) y lipidos (2, 4, 8 y 16%) sobre la magnitud y duracion de la accion dinamica especifica (ADE) y la excrecion nitrogenada en subadultos del camaron blanco Litopenaeus vannamei usando una camara metabolica controlada por computadora (respirometro de flujo continuo). Se determino la tasa de consumo de oxigeno a intervalos de 1 hora hasta que la tasa de consumo de oxigeno postprandial regreso al nivel de pre-alimentacion. Los camarones alimentados con todas las dietas tienen una tasa de respiracion significativamente alta despues de la alimentacion debida a la ADE. El consumo de oxigeno, el coeficiente de ADE y la magnitud de ADE aumento notablemente con el incremento del contenido de proteina en la dieta. Los camarones alimentados con el 20% de proteina en la dieta tuvieron el nivel mas bajo de respiracion de pre y post-alimentacion y la mas baja ADE. Un cambio significativo en el coeficiente de ADE relativo a la energia digestible no fue demostrado para cada uno de los niveles de lipidos. Adicionalmente, la excrecion nitrogenada aumento con el incremento del nivel de proteina en la dieta, pero no con el incremento del nivel de lipidos. Al estimar la ADE de subadultos se encontro que la tasa metabolica estandar (SMR) fue menor que la reportada para juveniles y postlarvas de L. vannamei. EnglishThe study aimed to evaluate the effect of 4 levels of dietary protein (20, 30, 40 and 50%) and lipids (2, 4, 8 and 16%) on the magnitude and duration of specific dynamic action (SDA) and postprandial nitrogen excretion in the subadult white shrimp Litopenaeus vannamei using computer-controlled metabolic chambers (continuous-flow respirometer). We determined the oxygen consumption rate at 1 h intervals until the postprandial oxygen consumption rate returned to the pre-feeding level. Shrimp fed all the diets had significantly higher respiration rates after feeding due to the SDA. Oxygen consumption, the SDA coefficient and the SDA magnitude increased notably with increasing dietary protein content. Shrimp fed the 20% protein diet had the lowest levels of pre- and post-feeding respiration and the smallest SDA. A significant change in the SDA coefficient relative to each lipid level was not demonstrable. Additionally, nitrogenous excretion increased with an increase of dietary protein but not with an increase of lipid level. By estimating the SDA of subadults, the response to standard metabolic rate (SMR) was lower than that reported for juveniles and postlarva white shrimp.","PeriodicalId":54475,"journal":{"name":"Revista De Biologia Marina Y Oceanografia","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4067/S0718-19572017000100011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45100774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-01DOI: 10.4067/S0718-19572017000100007
Yanett Leyton, C. Sayes, Cristián Mejías, M. Abarca, Rodolfo Wilson, C. Riquelme
espanolLa demanda mundial de alimentos aumenta el interes en el desarrollo de la acuicultura. En Chile se estan haciendo esfuerzos significativos para desarrollar el cultivo de Seriola lalandi, debido a la alta demanda de su carne a nivel nacional e internacional. Sin embargo, esta especie plantea dificultades persistentes con respecto a la sobrevivencia de las larvas. El objetivo del presente estudio fue evaluar los efectos de la bacteria Pseudoalteromonas sp. como un suplemento probiotico en el cultivo de larvas de S. lalandi. Para esto, larvas de S. lalandi se alimentaron con rotiferos (Brachionus rotundiformis y Brachionus plicatilis) y Artemia sp. que se cultivaron previamente usando microalgas mezclado con Pseudoalteromonas sp. Rotiferos y artemias fueron buenos vectores de probioticos debido a que las larvas de S. lalandi alimentadas con suplemento probiotico presentaron mayor sobrevivencia y longitud que el control al final del experimento. Estos hallazgos ponen en evidencia que los probioticos de Pseudoalteromonas sp. son buenos candidatos para el uso en cultivos de larvas de S. lalandi. Sin embargo, se necesita mas investigacion en una escala de cultivo mayor para validar su uso a nivel comercial. EnglishGlobal demand for food increases the interest in develop of aquaculture. Significant efforts are being made in Chile to develop Seriola lalandi culture, because of the high demand of this fish meat at national and international level. However, this species poses persisting difficulties regarding larval survival. The objective of the present study was to evaluate the effects of Pseudoalteromonas sp. bacteria as a probiotic supplement on the larval culturing of S. lalandi. For this, S. lalandi larvae were fed rotifers (Brachionus rotundiformis and Brachionus plicatilis) and Artemia sp. that were previously cultured using microalgae mixed with Pseudoalteromonas sp. Rotifers and Artemia were good probiotics vectors because S. lalandi larvae fed probiotic supplement showed higher survival that the control. These findings evidence that Pseudoalteromonas sp. are good probiotic candidates for use in S. lalandi larval cultures. However, is needed more research on major scale cultivation to validate their use commercially.
{"title":"Increased larval survival of Seriola lalandi using Pseudoalteromonas sp. as probiotics","authors":"Yanett Leyton, C. Sayes, Cristián Mejías, M. Abarca, Rodolfo Wilson, C. Riquelme","doi":"10.4067/S0718-19572017000100007","DOIUrl":"https://doi.org/10.4067/S0718-19572017000100007","url":null,"abstract":"espanolLa demanda mundial de alimentos aumenta el interes en el desarrollo de la acuicultura. En Chile se estan haciendo esfuerzos significativos para desarrollar el cultivo de Seriola lalandi, debido a la alta demanda de su carne a nivel nacional e internacional. Sin embargo, esta especie plantea dificultades persistentes con respecto a la sobrevivencia de las larvas. El objetivo del presente estudio fue evaluar los efectos de la bacteria Pseudoalteromonas sp. como un suplemento probiotico en el cultivo de larvas de S. lalandi. Para esto, larvas de S. lalandi se alimentaron con rotiferos (Brachionus rotundiformis y Brachionus plicatilis) y Artemia sp. que se cultivaron previamente usando microalgas mezclado con Pseudoalteromonas sp. Rotiferos y artemias fueron buenos vectores de probioticos debido a que las larvas de S. lalandi alimentadas con suplemento probiotico presentaron mayor sobrevivencia y longitud que el control al final del experimento. Estos hallazgos ponen en evidencia que los probioticos de Pseudoalteromonas sp. son buenos candidatos para el uso en cultivos de larvas de S. lalandi. Sin embargo, se necesita mas investigacion en una escala de cultivo mayor para validar su uso a nivel comercial. EnglishGlobal demand for food increases the interest in develop of aquaculture. Significant efforts are being made in Chile to develop Seriola lalandi culture, because of the high demand of this fish meat at national and international level. However, this species poses persisting difficulties regarding larval survival. The objective of the present study was to evaluate the effects of Pseudoalteromonas sp. bacteria as a probiotic supplement on the larval culturing of S. lalandi. For this, S. lalandi larvae were fed rotifers (Brachionus rotundiformis and Brachionus plicatilis) and Artemia sp. that were previously cultured using microalgae mixed with Pseudoalteromonas sp. Rotifers and Artemia were good probiotics vectors because S. lalandi larvae fed probiotic supplement showed higher survival that the control. These findings evidence that Pseudoalteromonas sp. are good probiotic candidates for use in S. lalandi larval cultures. However, is needed more research on major scale cultivation to validate their use commercially.","PeriodicalId":54475,"journal":{"name":"Revista De Biologia Marina Y Oceanografia","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4067/S0718-19572017000100007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45484507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-01DOI: 10.4067/S0718-19572017000100002
Jesús A. Pérez-Acosta, M. Martínez-Porchas, Teresa Gollas-Galván, L. R. Martínez-Córdova, L. E. Gutiérrez-Millán, Marco Antonio López-Torres
Besides participating in the transport of essential compounds and as recipients of phages, transmembrane proteins of rickettsia-like organisms (RLO), play an important role in the infection process of commercially important organisms such as fish, mollusk and crustaceans. Recently a new classification of RLO which divides them into four groups was reported: ancestral, typhus, the spotted fever and transitional. To date, only the typhus (TG) and spotted fever (SFG) groups have been reported as pathogenic of marine organisms. The outer membrane surface of the TG group has antigens type 0, 1, 2, 4, 5 (Sca0, Sca1, Sca2, Sca4, Sca5). Sca0 are also known as outer membrane proteins A (OmpA) and Sca5 as outer membrane proteins B (OmpB). Other outer membrane proteins such as enzymes called translocase (Tlc) have been detected, including translocase 1, 4 and 5 (Tlc1, Tlc4 and Tlc5). All these proteins (except for Sca0) have been detected in the SFG group. These proteins vary in features and functions. However, the information of RLO affecting marine organisms is not as common as that of terrestrial mammals. An analysis of the state of the art on the study of transmembrane proteins of RLO in marine organisms is performed in this review; additionally, the hypothetical infection mechanism of these RLO is inferred by using this information together with that reported of RLO affecting terrestrial organisms.
{"title":"Proteínas transmembranales de organismos tipo rickettsia (OTR) en animales acuáticos: Factores de adherencia, invasión e infección","authors":"Jesús A. Pérez-Acosta, M. Martínez-Porchas, Teresa Gollas-Galván, L. R. Martínez-Córdova, L. E. Gutiérrez-Millán, Marco Antonio López-Torres","doi":"10.4067/S0718-19572017000100002","DOIUrl":"https://doi.org/10.4067/S0718-19572017000100002","url":null,"abstract":"Besides participating in the transport of essential compounds and as recipients of phages, transmembrane proteins of rickettsia-like organisms (RLO), play an important role in the infection process of commercially important organisms such as fish, mollusk and crustaceans. Recently a new classification of RLO which divides them into four groups was reported: ancestral, typhus, the spotted fever and transitional. To date, only the typhus (TG) and spotted fever (SFG) groups have been reported as pathogenic of marine organisms. The outer membrane surface of the TG group has antigens type 0, 1, 2, 4, 5 (Sca0, Sca1, Sca2, Sca4, Sca5). Sca0 are also known as outer membrane proteins A (OmpA) and Sca5 as outer membrane proteins B (OmpB). Other outer membrane proteins such as enzymes called translocase (Tlc) have been detected, including translocase 1, 4 and 5 (Tlc1, Tlc4 and Tlc5). All these proteins (except for Sca0) have been detected in the SFG group. These proteins vary in features and functions. However, the information of RLO affecting marine organisms is not as common as that of terrestrial mammals. An analysis of the state of the art on the study of transmembrane proteins of RLO in marine organisms is performed in this review; additionally, the hypothetical infection mechanism of these RLO is inferred by using this information together with that reported of RLO affecting terrestrial organisms.","PeriodicalId":54475,"journal":{"name":"Revista De Biologia Marina Y Oceanografia","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4067/S0718-19572017000100002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45757077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-04-01DOI: 10.4067/S0718-19572017000100001
Cristóbal Villaseñor-Parada, Aníbal Pauchard, Erasmo C. Macaya
espanolLa costa chilena presenta menos reportes de especies introducidas respecto a otras costas a nivel mundial, lo que podria corresponder a un fenomeno natural generado por condiciones oceanograficas, o bien a un artefacto producido por falta de informacion disponible. Mediante el analisis de 71 trabajos indexados en Web of Science, relacionados con ecologia de invasiones marinas en la costa chilena, publicados entre 1998-2014, determinamos el estado actual de esta disciplina en Chile, e identificamos las tendencias de las investigaciones realizadas. La mayoria de las publicaciones se relacionan con especies en etapa de naturalizacion, y pocas con especies invasoras. El numero de publicaciones por ano incrementa linealmente, sugiriendo un creciente interes de la comunidad cientifica respecto al tema. La cantidad de informacion disponible (i.e., numero de publicaciones) no es homogenea entre las regiones administrativas, y la mayoria de los trabajos son realizados sectores puntuales dentro de cada region (usualmente cercanos a la capital regional). Regiones con alto trafico maritimo (e.g., Valparaiso, Magallanes) han sido muy poco estudiadas. A excepcion de la region de Coquimbo y Los Lagos, los trabajos por region apuntan a unos pocos taxa. Muy pocos trabajos abarcan grandes escalas espaciales, aunque varios de ellos realizan experimentos a escalas de tiempo mayores (e.g., mensual, anual). Nuestros resultados permiten sugerir que el numero de especies reportadas como introducidas en Chile podria estar subestimado. Observaciones en terreno, actualizacion periodica de catastros y utilizacion de herramientas moleculares, son propuestos como medidas para una mayor comprension del tema a nivel nacional. EnglishThe Chilean coast has fewer reports of introduced species for other shores worldwide, which could correspond to a natural phenomenon generated by oceanographic conditions, or an artifact caused by lack of available information. We analyzed 71 papers indexed in Web of Science related with ecology of marine invasions in the Chilean coast, published between 1998-2014, and we determined the current state of the discipline in Chile, and identified the trends (e.g., temporal, spatial, taxonomic) of the investigation. Most of the papers studied species naturalization stage, and very few deal with invasive species. The number of papers per year increases linearly with time, suggesting a growing interest of the scientific community in the study of the ecology of marine invasions. The amount of available information (i.e., number of publications) is not homogeneous among administrative regions, and most papers have examined specific sectors within each region (usually near the regional capital). Regions with high maritime traffic (e.g., Valparaiso, Magallanes) have been scarcely studied. With the exception of Coquimbo and Los Lagos, researches by region have been performed on a few taxa. Hardly any studies cover large spatial scales, although several o
{"title":"Ecología de invasiones marinas en Chile continental: ¿Qué sabemos y que nos falta por saber?","authors":"Cristóbal Villaseñor-Parada, Aníbal Pauchard, Erasmo C. Macaya","doi":"10.4067/S0718-19572017000100001","DOIUrl":"https://doi.org/10.4067/S0718-19572017000100001","url":null,"abstract":"espanolLa costa chilena presenta menos reportes de especies introducidas respecto a otras costas a nivel mundial, lo que podria corresponder a un fenomeno natural generado por condiciones oceanograficas, o bien a un artefacto producido por falta de informacion disponible. Mediante el analisis de 71 trabajos indexados en Web of Science, relacionados con ecologia de invasiones marinas en la costa chilena, publicados entre 1998-2014, determinamos el estado actual de esta disciplina en Chile, e identificamos las tendencias de las investigaciones realizadas. La mayoria de las publicaciones se relacionan con especies en etapa de naturalizacion, y pocas con especies invasoras. El numero de publicaciones por ano incrementa linealmente, sugiriendo un creciente interes de la comunidad cientifica respecto al tema. La cantidad de informacion disponible (i.e., numero de publicaciones) no es homogenea entre las regiones administrativas, y la mayoria de los trabajos son realizados sectores puntuales dentro de cada region (usualmente cercanos a la capital regional). Regiones con alto trafico maritimo (e.g., Valparaiso, Magallanes) han sido muy poco estudiadas. A excepcion de la region de Coquimbo y Los Lagos, los trabajos por region apuntan a unos pocos taxa. Muy pocos trabajos abarcan grandes escalas espaciales, aunque varios de ellos realizan experimentos a escalas de tiempo mayores (e.g., mensual, anual). Nuestros resultados permiten sugerir que el numero de especies reportadas como introducidas en Chile podria estar subestimado. Observaciones en terreno, actualizacion periodica de catastros y utilizacion de herramientas moleculares, son propuestos como medidas para una mayor comprension del tema a nivel nacional. EnglishThe Chilean coast has fewer reports of introduced species for other shores worldwide, which could correspond to a natural phenomenon generated by oceanographic conditions, or an artifact caused by lack of available information. We analyzed 71 papers indexed in Web of Science related with ecology of marine invasions in the Chilean coast, published between 1998-2014, and we determined the current state of the discipline in Chile, and identified the trends (e.g., temporal, spatial, taxonomic) of the investigation. Most of the papers studied species naturalization stage, and very few deal with invasive species. The number of papers per year increases linearly with time, suggesting a growing interest of the scientific community in the study of the ecology of marine invasions. The amount of available information (i.e., number of publications) is not homogeneous among administrative regions, and most papers have examined specific sectors within each region (usually near the regional capital). Regions with high maritime traffic (e.g., Valparaiso, Magallanes) have been scarcely studied. With the exception of Coquimbo and Los Lagos, researches by region have been performed on a few taxa. Hardly any studies cover large spatial scales, although several o","PeriodicalId":54475,"journal":{"name":"Revista De Biologia Marina Y Oceanografia","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4067/S0718-19572017000100001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44455970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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