Pub Date : 2019-05-10DOI: 10.22370/RBMO.2019.54.1.1673
Carlos Carlos Nisperuza-Pérez, J. Quirós-Rodríguez, F. Solís-Marín
The geographic distribution of Holothuria (Theelothuria) princeps in Colombian Caribbean is extended inside the Gulf of Morrosquillo, based on 7 individuals collected in Banco de Arena sector, Córdoba. A morphological description of this species record with color figures and scanning electron microscopy images of their ossicles is provided. This finding increases the spatial distribution of this species in the Caribbean coast of Colombia.
哥伦比亚加勒比地区Holothuria (Theelothuria) princeps的地理分布扩展到Morrosquillo湾内，基于Banco de Arena部门收集的7个个体，Córdoba。提供了该物种的形态学描述，并附有其小骨的彩色图和扫描电子显微镜图像。这一发现增加了该物种在哥伦比亚加勒比海岸的空间分布。
{"title":"Primeros registros e intervalos de distribución de Holothuria (Theelothuria) princeps Selenka, 1867 (Echinodermata: Holothuroidea: Holothuriidae) en el golfo de Morrosquillo, Caribe Colombiano","authors":"Carlos Carlos Nisperuza-Pérez, J. Quirós-Rodríguez, F. Solís-Marín","doi":"10.22370/RBMO.2019.54.1.1673","DOIUrl":"https://doi.org/10.22370/RBMO.2019.54.1.1673","url":null,"abstract":"The geographic distribution of Holothuria (Theelothuria) princeps in Colombian Caribbean is extended inside the Gulf of Morrosquillo, based on 7 individuals collected in Banco de Arena sector, Córdoba. A morphological description of this species record with color figures and scanning electron microscopy images of their ossicles is provided. This finding increases the spatial distribution of this species in the Caribbean coast of Colombia.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133835601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-10DOI: 10.22370/RBMO.2019.54.1.1459
Iram Zavala-Leal, D. S. Palacios-Salgado, Marcial Ruiz-Velazco, J. T. Nieto-Navarro, M. A. Cadena-Roa, Delia Domínguez-Ojeda, J. M. Pacheco-Vega, F. Valdez‐González
El bagre marino Bagre panamensis es un recurso pesquero que se explota a lo largo de todo el año y sin restricción alguna en el sureste del Golfo de California. Para manejar de manera adecuada la pesquería comercial de algún recurso, es importante conocer aspectos de su biología básica como la reproducción. En el presente estudio se estimó el periodo de reproducción a través de los índices gonadosomático (IGS), hepatosomático (IHS) y el factor de condición de B. panamensis. Las muestras fueron obtenidas mensualmente entre noviembre de 2015 y octubre de 2016 de la pesca comercial del área de San Blas. Se recolectaron 346 ejemplares de los cuales 182 fueron hembras y 164 machos. Las tallas (longitud total y peso) encontradas no mostraron diferencias entre sexos. La proporción sexual no fue diferente de 1:1 para el total de las muestras. La relación peso-longitud mostró que ambos sexos presentaron un tipo de crecimiento alométrico positivo. De acuerdo al índice gonadosomático (IGS) y el hepatosomático (IHS) se observó que esta especie presenta un periodo de reproducción al año, que va de mayo a agosto. Con base en estos resultados, se podría proponer una estrategia de manejo para esta pesquería en el sureste del Golfo de California.
{"title":"Periodo reproductivo del bagre chihuil Bagre panamensis (Siluriformes: Ariidae) en el sureste del Golfo de California","authors":"Iram Zavala-Leal, D. S. Palacios-Salgado, Marcial Ruiz-Velazco, J. T. Nieto-Navarro, M. A. Cadena-Roa, Delia Domínguez-Ojeda, J. M. Pacheco-Vega, F. Valdez‐González","doi":"10.22370/RBMO.2019.54.1.1459","DOIUrl":"https://doi.org/10.22370/RBMO.2019.54.1.1459","url":null,"abstract":"El bagre marino Bagre panamensis es un recurso pesquero que se explota a lo largo de todo el año y sin restricción alguna en el sureste del Golfo de California. Para manejar de manera adecuada la pesquería comercial de algún recurso, es importante conocer aspectos de su biología básica como la reproducción. En el presente estudio se estimó el periodo de reproducción a través de los índices gonadosomático (IGS), hepatosomático (IHS) y el factor de condición de B. panamensis. Las muestras fueron obtenidas mensualmente entre noviembre de 2015 y octubre de 2016 de la pesca comercial del área de San Blas. Se recolectaron 346 ejemplares de los cuales 182 fueron hembras y 164 machos. Las tallas (longitud total y peso) encontradas no mostraron diferencias entre sexos. La proporción sexual no fue diferente de 1:1 para el total de las muestras. La relación peso-longitud mostró que ambos sexos presentaron un tipo de crecimiento alométrico positivo. De acuerdo al índice gonadosomático (IGS) y el hepatosomático (IHS) se observó que esta especie presenta un periodo de reproducción al año, que va de mayo a agosto. Con base en estos resultados, se podría proponer una estrategia de manejo para esta pesquería en el sureste del Golfo de California.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"19 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120891672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-10DOI: 10.22370/RBMO.2019.54.1.1494
Juan P. Martin, Alicia Sar, C. Caminos
The soft-bottom macrobenthos of Bahia San Julian intertidal was surveyed to identify infaunal assemblages and analyze their relationships with the main environmental factors determining species distribution. Four seasonal surveys (summer, autumn, winter and spring) were performed in the middle and lower intertidal levels at seven sampling stations established on both sides of an urban sewage discharge point, and water and sediment variables were measured. To explore possible spatial variations in the community, environmental and biological data were analyzed using univariate and multivariate statistics. Community composition varied with intertidal level, sediment characteristics and distance to sewage discharge site. In sediment with high mud content, the community was characterized by Darina solenoides, Mysella patagona , Eteone sculpta, Scolecolepides uncinatus and Capitella sp., in the middle intertidal, and was characterized by M. patagona and Ampelisca sp. in the lower intertidal. In sediment with dominance of fine sand, the community was characterized by Aricidea sp. at both intertidal levels. Near the effluent discharge site, the community was largely dominated by M. patagona . Intertidal level and sediment particle size are the main factors determining the composition of benthic assemblages in the study area. Sewage discharge also affects the composition of the infaunal community, possibly as a result of the contribution of particulate organic matter in suspension that stimulates the populations of detritus feeders.
{"title":"Spatial changes in the infaunal community of a macrotidal flat in Bahía San Julián, Southern Patagonia, Argentina","authors":"Juan P. Martin, Alicia Sar, C. Caminos","doi":"10.22370/RBMO.2019.54.1.1494","DOIUrl":"https://doi.org/10.22370/RBMO.2019.54.1.1494","url":null,"abstract":"The soft-bottom macrobenthos of Bahia San Julian intertidal was surveyed to identify infaunal assemblages and analyze their relationships with the main environmental factors determining species distribution. Four seasonal surveys (summer, autumn, winter and spring) were performed in the middle and lower intertidal levels at seven sampling stations established on both sides of an urban sewage discharge point, and water and sediment variables were measured. To explore possible spatial variations in the community, environmental and biological data were analyzed using univariate and multivariate statistics. Community composition varied with intertidal level, sediment characteristics and distance to sewage discharge site. In sediment with high mud content, the community was characterized by Darina solenoides, Mysella patagona , Eteone sculpta, Scolecolepides uncinatus and Capitella sp., in the middle intertidal, and was characterized by M. patagona and Ampelisca sp. in the lower intertidal. In sediment with dominance of fine sand, the community was characterized by Aricidea sp. at both intertidal levels. Near the effluent discharge site, the community was largely dominated by M. patagona . Intertidal level and sediment particle size are the main factors determining the composition of benthic assemblages in the study area. Sewage discharge also affects the composition of the infaunal community, possibly as a result of the contribution of particulate organic matter in suspension that stimulates the populations of detritus feeders.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130313915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-10DOI: 10.22370/RBMO.2019.54.1.1434
Paulina J. Carimán, Pablo R. Reyes
Se presenta un análisis comparativo y síntesis del estado actual del conocimiento biológico y pesquero de Thyrsites atun en el hemisferio sur. La sierra T. atun, es un pez pelágico de la familia Gempylidae, que habita aguas frías y se distribuye en sectores australes del hemisferio sur, donde sigue un patrón de alimentación oportunista sobre pequeñas presas pelágicas. Hay poblaciones en África del Sur (AS), Australia (AU) y Nueva Zelanda (NZ), pero en Chile (CL) se desconoce la existencia de unidades poblaciones. En CL, las edades registradas alcanzan entre 1 y 6 años y la talla de primera madurez sexual (TPMS) ha sido estimada en 65,6 cm de longitud horquilla (LH). El presente estudio concluye que en CL existe poca información biológico-pesquera de la sierra en comparación a los otros países donde la especie también es un recurso pesquero.
{"title":"Estado del conocimiento biológico y pesquero de Thyrsites atun en el hemisferio sur","authors":"Paulina J. Carimán, Pablo R. Reyes","doi":"10.22370/RBMO.2019.54.1.1434","DOIUrl":"https://doi.org/10.22370/RBMO.2019.54.1.1434","url":null,"abstract":"Se presenta un análisis comparativo y síntesis del estado actual del conocimiento biológico y pesquero de Thyrsites atun en el hemisferio sur. La sierra T. atun, es un pez pelágico de la familia Gempylidae, que habita aguas frías y se distribuye en sectores australes del hemisferio sur, donde sigue un patrón de alimentación oportunista sobre pequeñas presas pelágicas. Hay poblaciones en África del Sur (AS), Australia (AU) y Nueva Zelanda (NZ), pero en Chile (CL) se desconoce la existencia de unidades poblaciones. En CL, las edades registradas alcanzan entre 1 y 6 años y la talla de primera madurez sexual (TPMS) ha sido estimada en 65,6 cm de longitud horquilla (LH). El presente estudio concluye que en CL existe poca información biológico-pesquera de la sierra en comparación a los otros países donde la especie también es un recurso pesquero.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116080795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-10DOI: 10.22370/RBMO.2019.54.1.1465
Thiago Lima de Carvalho, Julio Cesar Silva Cacho, R. S. Souza, Jefferson A. Morais, A. P. Wandeness, Marco Tulio L. Carlos, A. Wainberg, L. P. Souza-Santos, F. A. S. Ribeiro
The goal of this study was to demonstrate the feasibility of culturing the seahorse Hippocampus reidi in an organic integrated multi-trophic aquaculture farm that produces the oyster Crassostrea brasiliana and the shrimp Litopenaeus vannamei . Experiments were conducted to evaluate the effects stocking density and food (natural zooplankton, Artemia nauplii, or both) for the juvenile I, which are fish from 1 to 15 days after birth. Stocking density effect was studied on growth and survival of juveniles II from 30 days to commercial size in net cages. Survival of the juvenile I was not affected by stocking densities from 2 to 5 ind L -1 and was greater than 70% in all treatments. Seahorse length, however, was inversely related to stocking density. Both treatments with wild zooplankton promoted higher seahorse survival and growth than diet composed exclusively by Artemia sp. during the first 15 days of life. Juvenile II growth decreased with stocking density from 5 to 40 ind m -3 but survival was not affected by it. The total benefit and proportion of colored animals increased significantly with stocking density. The present study confirms the technical feasibility of organic multi-trophic seahorse production in net cages. Even at the highest density tested the seahorses grew well and could generate high profits.
{"title":"Integrating of the seahorse Hippocampus reidi in multi-trophic organic farms of oysters and shrimp: Effects of density and diet","authors":"Thiago Lima de Carvalho, Julio Cesar Silva Cacho, R. S. Souza, Jefferson A. Morais, A. P. Wandeness, Marco Tulio L. Carlos, A. Wainberg, L. P. Souza-Santos, F. A. S. Ribeiro","doi":"10.22370/RBMO.2019.54.1.1465","DOIUrl":"https://doi.org/10.22370/RBMO.2019.54.1.1465","url":null,"abstract":"The goal of this study was to demonstrate the feasibility of culturing the seahorse Hippocampus reidi in an organic integrated multi-trophic aquaculture farm that produces the oyster Crassostrea brasiliana and the shrimp Litopenaeus vannamei . Experiments were conducted to evaluate the effects stocking density and food (natural zooplankton, Artemia nauplii, or both) for the juvenile I, which are fish from 1 to 15 days after birth. Stocking density effect was studied on growth and survival of juveniles II from 30 days to commercial size in net cages. Survival of the juvenile I was not affected by stocking densities from 2 to 5 ind L -1 and was greater than 70% in all treatments. Seahorse length, however, was inversely related to stocking density. Both treatments with wild zooplankton promoted higher seahorse survival and growth than diet composed exclusively by Artemia sp. during the first 15 days of life. Juvenile II growth decreased with stocking density from 5 to 40 ind m -3 but survival was not affected by it. The total benefit and proportion of colored animals increased significantly with stocking density. The present study confirms the technical feasibility of organic multi-trophic seahorse production in net cages. Even at the highest density tested the seahorses grew well and could generate high profits.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130722589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-10DOI: 10.22370/RBMO.2019.54.1.1674
C. Machuca, Francisco Cerna, L. Muñoz
Anchovy (Engraulis ringens) population units were analyzed in three zones off the coast of Chile: 1: Arica-Iquique, 2: Coquimbo and 3: Talcahuano-Valdivia from samples obtaineds during the 2012 spawning season. We used 50 left sagittae otoliths from each zone to perform a morphometric analysis, which included basic measurements, shape indexes and contour analysis (elliptical Fourier analysis). A MANOVA and Tukey multiple comparison analyses, applied on basic measures and shape indexes showed significant differences between zone 3 and zones 1 and 2. A classification by Canonical Discriminant analysis of elliptical Fourier harmonics, indicated significant differences among zones. It is concluded, therefore, that otolith shape analysis could be used to discriminate population units of Engraulis ringens. Better results were achieved using elliptic Fourier coefficients than using only shape indices.
{"title":"Identificación de stocks de Engraulis ringens en Chile utilizando morfometría de otolitos","authors":"C. Machuca, Francisco Cerna, L. Muñoz","doi":"10.22370/RBMO.2019.54.1.1674","DOIUrl":"https://doi.org/10.22370/RBMO.2019.54.1.1674","url":null,"abstract":"Anchovy (Engraulis ringens) population units were analyzed in three zones off the coast of Chile: 1: Arica-Iquique, 2: Coquimbo and 3: Talcahuano-Valdivia from samples obtaineds during the 2012 spawning season. We used 50 left sagittae otoliths from each zone to perform a morphometric analysis, which included basic measurements, shape indexes and contour analysis (elliptical Fourier analysis). A MANOVA and Tukey multiple comparison analyses, applied on basic measures and shape indexes showed significant differences between zone 3 and zones 1 and 2. A classification by Canonical Discriminant analysis of elliptical Fourier harmonics, indicated significant differences among zones. It is concluded, therefore, that otolith shape analysis could be used to discriminate population units of Engraulis ringens. Better results were achieved using elliptic Fourier coefficients than using only shape indices.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130939770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-10DOI: 10.22370/RBMO.2019.54.1.1651
Ma. del Carmen Alejo-Plata, Sairi Sarai León-Guzmán, Román Díaz-Polo, Ana María Torres-Huertal
Los argonautas son una familia de pulpos pelágicos con amplia distribución en aguas tropicales y subtropicales del océano mundial, cuya presencia es notable en la dieta de diversas especies de peces pelágicos con valor comercial. En el presente estudio se evaluó la diversidad, abundancia relativa y frecuencia de este grupo de cefalópodos presentes en el contenido gástrico de 7 especies de peces (4 teleósteos y un elasmobranquio), capturados por la pesquería artesanal del estado de Oaxaca, México. Se examinaron 778 estómagos obtenidos de muestreos mensuales durante 2016 y 2017. Los argonautas fueron las presas más representativas del grupo octopoda (98%) y el segundo grupo más importante de cefalópodos (35%) después de los calamares (42,5%). Un total de 273 hembras correspondientes a 3 especies de argonautas fueron analizadas: Argonauta nouryi (45,6%), A. argo (20,8%), y A. hians (33,6%). Se observaron dos tipos en las conchas de A. nouryi: tipo A. nouryi (16,3%) y tipo A. cornuta (29,3%). De este modo, se destaca la utilidad de los estudios de alimentación en peces depredadores pelágicos para llevar a cabo la captura y el estudio bioecológico de argonautas en el Pacífico tropical oriental.
{"title":"Diversidad, abundancia y frecuencia de argonautas (Cephalopoda: Argonautidae), en la dieta de peces pelágicos de importancia comercial en Oaxaca, México","authors":"Ma. del Carmen Alejo-Plata, Sairi Sarai León-Guzmán, Román Díaz-Polo, Ana María Torres-Huertal","doi":"10.22370/RBMO.2019.54.1.1651","DOIUrl":"https://doi.org/10.22370/RBMO.2019.54.1.1651","url":null,"abstract":"Los argonautas son una familia de pulpos pelágicos con amplia distribución en aguas tropicales y subtropicales del océano mundial, cuya presencia es notable en la dieta de diversas especies de peces pelágicos con valor comercial. En el presente estudio se evaluó la diversidad, abundancia relativa y frecuencia de este grupo de cefalópodos presentes en el contenido gástrico de 7 especies de peces (4 teleósteos y un elasmobranquio), capturados por la pesquería artesanal del estado de Oaxaca, México. Se examinaron 778 estómagos obtenidos de muestreos mensuales durante 2016 y 2017. Los argonautas fueron las presas más representativas del grupo octopoda (98%) y el segundo grupo más importante de cefalópodos (35%) después de los calamares (42,5%). Un total de 273 hembras correspondientes a 3 especies de argonautas fueron analizadas: Argonauta nouryi (45,6%), A. argo (20,8%), y A. hians (33,6%). Se observaron dos tipos en las conchas de A. nouryi: tipo A. nouryi (16,3%) y tipo A. cornuta (29,3%). De este modo, se destaca la utilidad de los estudios de alimentación en peces depredadores pelágicos para llevar a cabo la captura y el estudio bioecológico de argonautas en el Pacífico tropical oriental.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125580770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-10DOI: 10.22370/RBMO.2019.54.1.1544
D. A. Ruiz-Güereca, A. Licea-Navarro, M. Sánchez‐Saavedra
Tuberculosis is considered one of the most important epidemiological diseases worldwide. The current treatment for tuberculosis is a combination of antituberculosis drugs for at least 9 months. Nowadays, the search for new pharmacological agents for the treatment of tuberculosis is an urgent endeavor. Microalgae produce a wide variety of molecules that possess biological activities of pharmaceutical interest. Therefore, the objective of this work was to evaluate the antimycobacterial activity of hexane crude extracts of 6 microalgae: Chlamydomonas mexicana , Porphyridium cruentum , Isochrysis galbana , Rhodomonas sp., Aphanocapsa marina, and Nitzschia palea . All of the hexane extracts inhibited at least 90% of the growth of Mycobacterium tuberculosis H37Rv at a concentration of 100 μg ml -1 . The hexane crude extract of I. galbana had the highest antimycobacterial activity displaying a percentage inhibition that was equal to that of the antituberculosis drug isoniazid and having a minimum inhibitory concentration of 50 μg ml -1 . These findings demonstrate that microalgae are an excellent source for the search of novel antimycobacterial compounds.
结核病被认为是全世界最重要的流行病学疾病之一。目前治疗结核病的方法是联合使用抗结核药物至少9个月。目前，寻找治疗肺结核的新药物是一项紧迫的工作。微藻产生各种各样的分子，具有生物活性的药物利益。因此，本研究旨在评价墨西哥衣藻、cruentum卟啉藻、galbana等藻、Rhodomonas sp.、Aphanocapsa marina和Nitzschia palea等6种微藻的己烷粗提物的抑菌活性。所有正己烷提取物在浓度为100 μg ml -1时抑制结核分枝杆菌H37Rv至少90%的生长。其正己烷粗提物抑菌活性最高，抑菌率与抗结核药物异烟肼相当，最低抑菌浓度为50 μg ml -1。这些发现表明，微藻是寻找新型抗真菌化合物的良好来源。
{"title":"Evaluation of antimycobacterial activity from marine and freshwater microalgae","authors":"D. A. Ruiz-Güereca, A. Licea-Navarro, M. Sánchez‐Saavedra","doi":"10.22370/RBMO.2019.54.1.1544","DOIUrl":"https://doi.org/10.22370/RBMO.2019.54.1.1544","url":null,"abstract":"Tuberculosis is considered one of the most important epidemiological diseases worldwide. The current treatment for tuberculosis is a combination of antituberculosis drugs for at least 9 months. Nowadays, the search for new pharmacological agents for the treatment of tuberculosis is an urgent endeavor. Microalgae produce a wide variety of molecules that possess biological activities of pharmaceutical interest. Therefore, the objective of this work was to evaluate the antimycobacterial activity of hexane crude extracts of 6 microalgae: Chlamydomonas mexicana , Porphyridium cruentum , Isochrysis galbana , Rhodomonas sp., Aphanocapsa marina, and Nitzschia palea . All of the hexane extracts inhibited at least 90% of the growth of Mycobacterium tuberculosis H37Rv at a concentration of 100 μg ml -1 . The hexane crude extract of I. galbana had the highest antimycobacterial activity displaying a percentage inhibition that was equal to that of the antituberculosis drug isoniazid and having a minimum inhibitory concentration of 50 μg ml -1 . These findings demonstrate that microalgae are an excellent source for the search of novel antimycobacterial compounds.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124697698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-10DOI: 10.22370/RBMO.2019.54.1.1569
Fidelina González, K. Sáez, Maria E Vega, Berenice Bizama, J. Becerra, Irene Lépez, V. Hernández, Mario Silva
The aim of this study was to compare conditions for the production of high levels of PUFA, EPA and DHA in cultured microalgae for larval bivalve feeding stages. It assessed fatty acid composition by gas chromatography for Isochrysis galbana Parke (T-Iso) and 2 species of Chaetoceros , C. gracilis Pantocsek and C. constrictus Gran. Species were studied in batch cultures, at the beginning of stationary growth phase with different irradiance and 2 levels of nitrogen content for Chaetoceros sp., and constant irradiance with 5 concentrations of sodium nitrate for I. galbana in an F/2 medium. Isochrysis galbana produced higher levels of linolenic acid and docosahexaenoic acid than eicosapentaenoic acid (EPA) at low N-nitrate concentrations; however, fatty acids increased notably with surplus N-nitrate, above F/2 medium content. Low irradiance and normal concentration of nitrates in the batches of Chaetoceros gracilis species produced a greater EPA content. C. constrictus , a diatom isolated from phytoplankton samples, presented higher levels of EPA and DHA at low levels of nitrogen and low irradiance.
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Pub Date : 2019-01-10DOI: 10.22370/RBMO.2018.53.3.1358
Salvador Ruiz-Ramírez, Araceli Montserrat Pérez-Segoviano, Gabriela Lucano-Ramírez, G. González-Sansón, J. Flores-Ortega
La cabrilla pinta, Epinephelus labriformis, es una especie de la familia Serranidae, explotada comercialmente en la Bahía de Navidad, Jalisco, México. El objetivo del trabajo fue describir las características reproductivas de E. labriformis. Se realizaron muestreos mensuales entre 1998 y 2008 utilizando redes agalleras. De cada organismo se obtuvo la longitud total (LT) y el peso total (PT); las gónadas fueron extraídas, pesadas, clasificadas según el estadio de desarrollo y preservadas para análisis histológicos. Se recolectaron 940 ejemplares, 521 fueron hembras y 419 machos. La longitud promedio de las hembras fue de 30,1 (± 0,14) cm y la de los machos 31,3 (± 0,13) cm LT. Los máximos valores del índice gonadosomático y los mayores porcentajes de gónadas maduras tanto en hembras como en machos, se presentaron en abril y agosto. El factor de condición presentó escasa variación temporal. Mediante el análisis histológico de las gónadas se identificaron ejemplares en transición, con ovarios con ovocitos en regresión y tejido testicular en desarrollo. El desarrollo de los ovocitos es asincrónico y el del testículo es de tipo lobular. El ejemplar más pequeño encontrado en transición midió 25,6 cm LT. La longitud promedio de maduración sexual fue 29,6 cm LT para hembras y 31,3 cm LT para machos; contrastando estas tallas con las de captura, se infiere que los individuos capturados habrían tenido al menos un evento reproductivo. E. labriformis es un hermafrodita protógino que presenta una mayor actividad reproductiva en primavera-verano lo cual lo vuelve altamente vulnerable al impacto de la pesca.
pinta, Epinephelus labriformis，是Serranidae科的一种，在墨西哥哈利斯科的Navidad湾进行商业开发。本研究的目的是描述labriformis的生殖特征。本研究的目的是确定在该地区发现的物种，并确定在该地区发现的物种。测定了各生物的总长度(LT)和总重量(PT);在本研究中，我们使用了一种不同的方法来确定性腺的发育阶段，并将其保存下来进行组织学分析。本研究的目的是评估墨西哥恰帕斯州恰帕斯市的鸟类种群。4月和8月雌雄性腺指数最高，成熟性腺百分比最高，雌性平均长度30.1(±0.14)cm，雄性平均长度31.3(±0.13)cm。条件因素在时间上变化不大。通过对性腺的组织学分析，鉴定出过渡标本，卵巢卵母细胞萎缩，睾丸组织发育。卵母细胞的发育是异步的，睾丸是小叶型的。在过渡时期发现的最小标本为25.6 cm LT，雌性平均性成熟长度为29.6 cm LT，雄性平均性成熟长度为31.3 cm LT;通过将这些尺寸与捕获的尺寸进行对比，可以推断出捕获的个体至少有一次繁殖事件。labriformis是雌雄同体的，在春夏繁殖活动增加，这使得它非常容易受到捕鱼的影响。
{"title":"Reproducción de la cabrilla pinta Epinephelus labriformis en la Bahía de Navidad, Jalisco, México","authors":"Salvador Ruiz-Ramírez, Araceli Montserrat Pérez-Segoviano, Gabriela Lucano-Ramírez, G. González-Sansón, J. Flores-Ortega","doi":"10.22370/RBMO.2018.53.3.1358","DOIUrl":"https://doi.org/10.22370/RBMO.2018.53.3.1358","url":null,"abstract":"La cabrilla pinta, Epinephelus labriformis, es una especie de la familia Serranidae, explotada comercialmente en la Bahía de Navidad, Jalisco, México. El objetivo del trabajo fue describir las características reproductivas de E. labriformis. Se realizaron muestreos mensuales entre 1998 y 2008 utilizando redes agalleras. De cada organismo se obtuvo la longitud total (LT) y el peso total (PT); las gónadas fueron extraídas, pesadas, clasificadas según el estadio de desarrollo y preservadas para análisis histológicos. Se recolectaron 940 ejemplares, 521 fueron hembras y 419 machos. La longitud promedio de las hembras fue de 30,1 (± 0,14) cm y la de los machos 31,3 (± 0,13) cm LT. Los máximos valores del índice gonadosomático y los mayores porcentajes de gónadas maduras tanto en hembras como en machos, se presentaron en abril y agosto. El factor de condición presentó escasa variación temporal. Mediante el análisis histológico de las gónadas se identificaron ejemplares en transición, con ovarios con ovocitos en regresión y tejido testicular en desarrollo. El desarrollo de los ovocitos es asincrónico y el del testículo es de tipo lobular. El ejemplar más pequeño encontrado en transición midió 25,6 cm LT. La longitud promedio de maduración sexual fue 29,6 cm LT para hembras y 31,3 cm LT para machos; contrastando estas tallas con las de captura, se infiere que los individuos capturados habrían tenido al menos un evento reproductivo. E. labriformis es un hermafrodita protógino que presenta una mayor actividad reproductiva en primavera-verano lo cual lo vuelve altamente vulnerable al impacto de la pesca.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124064663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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