Pub Date : 2023-05-26DOI: 10.22370/rbmo.2022.57.especial.3729
Adriana González-Pestana, X. Vélez-Zuazo, J. Alfaro‐Shigueto, Jeffrey C. Mangel
Historical landings from the Food and Agriculture Organization (1950–2015) were used to estimate the contribution of the Peruvian batoid fishery to the eastern Pacific Ocean, and species-specific landings from Instituto del Mar del Peru (1997-2015) were used to identify the most-landed species, their landings sites and monthly variation throughout the year, and fishing gear types most used. The regulatory and research landscape were evaluated toward identifying potential gaps that may be hindering conservation and management of batoids in Peru. Results showed that in the eastern Pacific, Peru ranked second, after Chile, for batoid landings from 1950 to 2015. Of the twenty-three species of marine batoids that interact with Peruvian fisheries, the most landed taxonomic groups, from 1997 to 2015, were: Myliobatis spp. (i.e., M. chilensis and M. peruvianus; 45% of batoids landings), Mobula spp. (primarily M. mobular, and secondarily M. thurstoni, M. munkiana, M. tarapacana; 28%), Pseudobatos planiceps (6%), and Hypanus dipterurus (6%). Most of these species are landed in northern Peru, where gillnets are the most-used fishing gear to capture them. Batoid landings occurred year-round; yet, for H. dipterurus and P. planiceps landings were highest during the austral summer. Only three management measures exist for batoids fisheries in Peru for three species (i.e., M. birostris, Pristis pristis, Rhinoptera steindachneri) and two taxa (i.e., Mobula and Myliobatis) which are not fully enforced. Batoid research in Peru is limited, with only 25 publications from 1978 to 2022, in which the most studied species are Mobula birostris, M. chilensis and M. peruvianus. This study establishes an information baseline for batoids in Peru that can help guide their management, research, and conservation.
利用联合国粮食及农业组织(fao) 1950-2015年的历史登陆数据来估计秘鲁舌鱼渔业对东太平洋的贡献，利用秘鲁海洋研究所(Instituto del Mar del Peru) 1997-2015年的特定物种登陆数据来确定登陆最多的物种、登陆地点和全年的月度变化，以及最常用的渔具类型。对监管和研究情况进行了评估，以确定可能阻碍秘鲁蝙蝠类动物保护和管理的潜在差距。结果显示，从1950年到2015年，在东太平洋地区，秘鲁的蝙蝠降落量仅次于智利，排名第二。在与秘鲁渔业相互作用的23种海洋蝙蝠类中，1997 - 2015年登陆最多的分类类群为:Myliobatis spp.(即M. chilensis和M. peruvianus;占蝙蝠类着陆率的45%)，蚊科(主要是mobular，其次是thurstoni, munkiana, tarapacana;28%)， planiceps Pseudobatos(6%)和Hypanus dipterurus(6%)。这些物种中的大多数在秘鲁北部登陆，在那里刺网是捕获它们最常用的渔具。蝙蝠飞行器全年都在着陆;然而，双翅龙和平头龙在南方夏季的登陆次数最多。秘鲁的蝙蝠类渔业只有三个管理措施，涉及三个物种(即，斑胸虾、Pristis Pristis、steindachneri鼻翅目)和两个分类群(即，蚊和Myliobatis)，但没有得到充分执行。秘鲁的蝙蝠类研究是有限的，从1978年到2022年只有25篇论文发表，其中研究最多的物种是小蚊、智利芽孢猴和秘鲁芽孢猴。本研究为秘鲁的蝙蝠类动物建立了一个信息基线，可以帮助指导它们的管理、研究和保护。
{"title":"Batoid fishery in Peru (1950-2015): Magnitude, management and data needs","authors":"Adriana González-Pestana, X. Vélez-Zuazo, J. Alfaro‐Shigueto, Jeffrey C. Mangel","doi":"10.22370/rbmo.2022.57.especial.3729","DOIUrl":"https://doi.org/10.22370/rbmo.2022.57.especial.3729","url":null,"abstract":"Historical landings from the Food and Agriculture Organization (1950–2015) were used to estimate the contribution of the Peruvian batoid fishery to the eastern Pacific Ocean, and species-specific landings from Instituto del Mar del Peru (1997-2015) were used to identify the most-landed species, their landings sites and monthly variation throughout the year, and fishing gear types most used. The regulatory and research landscape were evaluated toward identifying potential gaps that may be hindering conservation and management of batoids in Peru. Results showed that in the eastern Pacific, Peru ranked second, after Chile, for batoid landings from 1950 to 2015. Of the twenty-three species of marine batoids that interact with Peruvian fisheries, the most landed taxonomic groups, from 1997 to 2015, were: Myliobatis spp. (i.e., M. chilensis and M. peruvianus; 45% of batoids landings), Mobula spp. (primarily M. mobular, and secondarily M. thurstoni, M. munkiana, M. tarapacana; 28%), Pseudobatos planiceps (6%), and Hypanus dipterurus (6%). Most of these species are landed in northern Peru, where gillnets are the most-used fishing gear to capture them. Batoid landings occurred year-round; yet, for H. dipterurus and P. planiceps landings were highest during the austral summer. Only three management measures exist for batoids fisheries in Peru for three species (i.e., M. birostris, Pristis pristis, Rhinoptera steindachneri) and two taxa (i.e., Mobula and Myliobatis) which are not fully enforced. Batoid research in Peru is limited, with only 25 publications from 1978 to 2022, in which the most studied species are Mobula birostris, M. chilensis and M. peruvianus. This study establishes an information baseline for batoids in Peru that can help guide their management, research, and conservation. \u0000 ","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114720219","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 : 2023-05-23DOI: 10.22370/rbmo.2022.57.2.3529
Claudio F. Cornejo, Tomás Vargas, Stephanny Curaz, Javie Sellanes, Christian M. Ibáñez
To test the island rule, the body size of P. mercatoris and P. aurata was measured, then statistical test and generalized linear models (GLM) were performed to explore changes in body length of both species. A smaller body length was evidenced in P. mercatoris supporting insular dwarfism. Additionally, P. mercatoris showed a trend of decreasing body size over time. This is the first report of the island rule in polyplacophorans. The temporal decrease in the size of P. mercatoris suggests a possible increase anthropogenic pressure, which should be studied to facilitate conservation and monitoring strategies.
{"title":"La regla de islas y el tamaño corporal del poliplacóforo Plaxiphora mercatoris en Rapa Nui","authors":"Claudio F. Cornejo, Tomás Vargas, Stephanny Curaz, Javie Sellanes, Christian M. Ibáñez","doi":"10.22370/rbmo.2022.57.2.3529","DOIUrl":"https://doi.org/10.22370/rbmo.2022.57.2.3529","url":null,"abstract":"To test the island rule, the body size of P. mercatoris and P. aurata was measured, then statistical test and generalized linear models (GLM) were performed to explore changes in body length of both species. A smaller body length was evidenced in P. mercatoris supporting insular dwarfism. Additionally, P. mercatoris showed a trend of decreasing body size over time. This is the first report of the island rule in polyplacophorans. The temporal decrease in the size of P. mercatoris suggests a possible increase anthropogenic pressure, which should be studied to facilitate conservation and monitoring strategies.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127365110","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 : 2023-05-23DOI: 10.22370/rbmo.2022.57.2.3525
Sara Yexalén Morán-Garay, Liliana Rojo-Arreola
Las herramientas de edición genética han transformado la manera en que se estudia la función de los genes y proteínas de los sistemas biológicos. Especialmente CRISPR-Cas9 ha tenido un gran apogeo desde su descubrimiento, lo cual ha permitido un avance significativo de los estudios basados en la edición genética debido a la eficacia y relativa facilidad del procedimiento. En el presente trabajo se ha compilado la información actual sobre el uso de CRISPR-Cas9 como herramienta molecular para elucidar la función genética en metazoarios marinos. La eficiencia de esta herramienta demuestra su factibilidad de ser utilizada para describir a detalle aspectos de la biología, fisiología, y ecología de organismos marinos. Se abordan también algunas consideraciones técnicas generales que deben ser tomadas en cuenta para el éxito de esta aproximación.
{"title":"CRISPR-Cas9 como herramienta para describir la función genética en metazoarios marinos","authors":"Sara Yexalén Morán-Garay, Liliana Rojo-Arreola","doi":"10.22370/rbmo.2022.57.2.3525","DOIUrl":"https://doi.org/10.22370/rbmo.2022.57.2.3525","url":null,"abstract":"Las herramientas de edición genética han transformado la manera en que se estudia la función de los genes y proteínas de los sistemas biológicos. Especialmente CRISPR-Cas9 ha tenido un gran apogeo desde su descubrimiento, lo cual ha permitido un avance significativo de los estudios basados en la edición genética debido a la eficacia y relativa facilidad del procedimiento. En el presente trabajo se ha compilado la información actual sobre el uso de CRISPR-Cas9 como herramienta molecular para elucidar la función genética en metazoarios marinos. La eficiencia de esta herramienta demuestra su factibilidad de ser utilizada para describir a detalle aspectos de la biología, fisiología, y ecología de organismos marinos. Se abordan también algunas consideraciones técnicas generales que deben ser tomadas en cuenta para el éxito de esta aproximación.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121776564","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 : 2023-05-23DOI: 10.22370/rbmo.2022.57.2.3526
Malory García-Alcalde, D. Minaya, L. Alvariño, J. Iannacone
Peruvian moonfish Selene peruviana is an abundant resource on the Pacific coasts, with a little-known biology. Regarding its parasitofauna, only two species of parasites have been registered and, given so little information, a parasitological study was carried out on 80 specimens of S. peruviana sampled from the coast of Tumbes, north of Peru, between June and October 2018. The ecological descriptors of parasitic infection/infestation, the degree of parasitic dispersal, the alpha diversity indices and the correlation the parasitological indices and biological characteristics of the fish (TL and sex) were calculated. Two species of monogeneans (Oaxacotyle oaxacensis and Metamicrocotyla macracantha), one species of trematode (Lecithocladium cristatum) and four species of copepods (Naobranchia sp., Lepeophtheirus sp., Caligus sp. and Lernanthropus sp.) were recorded. The monogenean O. oaxacensis was considered the only core species (e.g., with prevalence >45%). The distribution found for O. oaxacensis and L. cristatum was aggregated and there was no association between TL and sex with the parasitological indices. In the case of alpha diversity indices, the Margalef (Dmg), Shannon-Weaver (H´) and Pielou (J´) diversity index values were higher in females, but the Simpson dominance (D) did not show differences between the sexes. The diversity index of parasitic H' showed a higher value in the sizes over sexual maturity of S. peruviana. The parasitic D index presented an opposite pattern. All the parasite species found in this study are new records for S. peruviana and for Peru.
{"title":"Parasitic fauna of the Peruvian moonfish Selene peruviana (Perciformes: Carangidae) from the north coast of Peru","authors":"Malory García-Alcalde, D. Minaya, L. Alvariño, J. Iannacone","doi":"10.22370/rbmo.2022.57.2.3526","DOIUrl":"https://doi.org/10.22370/rbmo.2022.57.2.3526","url":null,"abstract":"Peruvian moonfish Selene peruviana is an abundant resource on the Pacific coasts, with a little-known biology. Regarding its parasitofauna, only two species of parasites have been registered and, given so little information, a parasitological study was carried out on 80 specimens of S. peruviana sampled from the coast of Tumbes, north of Peru, between June and October 2018. The ecological descriptors of parasitic infection/infestation, the degree of parasitic dispersal, the alpha diversity indices and the correlation the parasitological indices and biological characteristics of the fish (TL and sex) were calculated. Two species of monogeneans (Oaxacotyle oaxacensis and Metamicrocotyla macracantha), one species of trematode (Lecithocladium cristatum) and four species of copepods (Naobranchia sp., Lepeophtheirus sp., Caligus sp. and Lernanthropus sp.) were recorded. The monogenean O. oaxacensis was considered the only core species (e.g., with prevalence >45%). The distribution found for O. oaxacensis and L. cristatum was aggregated and there was no association between TL and sex with the parasitological indices. In the case of alpha diversity indices, the Margalef (Dmg), Shannon-Weaver (H´) and Pielou (J´) diversity index values were higher in females, but the Simpson dominance (D) did not show differences between the sexes. The diversity index of parasitic H' showed a higher value in the sizes over sexual maturity of S. peruviana. The parasitic D index presented an opposite pattern. All the parasite species found in this study are new records for S. peruviana and for Peru.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124722866","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 : 2023-05-23DOI: 10.22370/rbmo.2022.57.2.3527
Salvador Hernández-Vázquez, G. González-Sansón, C. Aguilar-Betancourt, José Alfredo Castillo-Guerrero
La dinámica hidrológica originada por los ciclos de marea en estuarios causa cambios en la diversidad, distribución y abundancia de las aves y de sus presas. Para evaluar el efecto de las mareas en la abundancia, distribución y actividad en las aves acuáticas se realizaron conteos mensuales a lo largo de un transecto paralelo al margen de la laguna Barra de Navidad, desde marzo 2011 a febrero 2012 (12 en marea alta y 12 en marea baja). El perímetro de la laguna fue dividido en cuatro zonas con la misma longitud; A, B, C y D. Se identificaron 52 y 7.775 registros en marea alta y 68 especies y 16.469 registros en marea baja. En marea alta predominaron las aves marinas (14 especies y 3.590 registros) y zancudas (15 especies y 2.075 registros), y en marea baja fueron las aves playeras (23 especies, 5.975 registros) y las aves zancudas (17 especies, 5.458 registros). La abundancia estacional exhibió patrones similares en todos los grupos de aves, con incrementos invernales (enero a marzo), excepto en los patos y especies afines (Podicipedidae y Rallidae). Los planos lodosos, al sureste de la laguna (zona C), concentraron la mayor abundancia de aves y fueron usados como área de alimentación durante la marea baja. La información generada en el presente estudio puede considerarse como una herramienta para la toma de decisiones en cualquier obra urbana o turística que se pretenda realizar en la laguna, de forma que se pueda asegurar la disponibilidad de sustratos para las aves.
{"title":"Asociaciones espaciales y temporales de aves acuáticas durante los ciclos de mareas diurnos, en la laguna costera Barra de Navidad, del Pacífico central mexicano","authors":"Salvador Hernández-Vázquez, G. González-Sansón, C. Aguilar-Betancourt, José Alfredo Castillo-Guerrero","doi":"10.22370/rbmo.2022.57.2.3527","DOIUrl":"https://doi.org/10.22370/rbmo.2022.57.2.3527","url":null,"abstract":"La dinámica hidrológica originada por los ciclos de marea en estuarios causa cambios en la diversidad, distribución y abundancia de las aves y de sus presas. Para evaluar el efecto de las mareas en la abundancia, distribución y actividad en las aves acuáticas se realizaron conteos mensuales a lo largo de un transecto paralelo al margen de la laguna Barra de Navidad, desde marzo 2011 a febrero 2012 (12 en marea alta y 12 en marea baja). El perímetro de la laguna fue dividido en cuatro zonas con la misma longitud; A, B, C y D. Se identificaron 52 y 7.775 registros en marea alta y 68 especies y 16.469 registros en marea baja. En marea alta predominaron las aves marinas (14 especies y 3.590 registros) y zancudas (15 especies y 2.075 registros), y en marea baja fueron las aves playeras (23 especies, 5.975 registros) y las aves zancudas (17 especies, 5.458 registros). La abundancia estacional exhibió patrones similares en todos los grupos de aves, con incrementos invernales (enero a marzo), excepto en los patos y especies afines (Podicipedidae y Rallidae). Los planos lodosos, al sureste de la laguna (zona C), concentraron la mayor abundancia de aves y fueron usados como área de alimentación durante la marea baja. La información generada en el presente estudio puede considerarse como una herramienta para la toma de decisiones en cualquier obra urbana o turística que se pretenda realizar en la laguna, de forma que se pueda asegurar la disponibilidad de sustratos para las aves.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116802796","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 : 2023-05-23DOI: 10.22370/rbmo.2022.57.2.3528
Claudio Delgado, Jaime A. Cursach, L. Espinosa, Ana Pfeifer, J. Cárdenas
El zarapito de pico recto (Limosa haemastica) es un ave playera migratoria considerada de alta preocupación para la conservación. El objetivo del presente trabajo fue determinar sitios de uso de L. haemastica, mediante monitoreo satelital, durante temporada no reproductiva, en la Región de Los Lagos, sur de Chile. Se entrega un listado de sitios identificados como relevantes para esta especie, junto con detalles de los movimientos de las aves entre distintos humedales marinos y estuarinos de la Región. Se elaboró una base de datos espacial generada por siete transmisores satelitales instalados en individuos de L. haemastica. De estos, cinco fueron instalados en noviembre 2015 en el humedal marino de Chullec (42,47°S; 73,53°O), Chiloé. Mientras que los otros dos fueron instalados en noviembre 2020 en el humedal La Pasada (41,60°S; 73,59°O), Maullín. Los resultados indicaron que L. haemastica utiliza distintos humedales marinos y estuarinos de la Región de Los Lagos, tanto continentales como insulares. Estos movimientos mostraron un patrón de uso que permite proponer una red de sitios que conecta el paisaje continental e insular. En total, se identificaron 25 sitios importantes para L. haemastica en Los Lagos, siendo nueve reconocidos por primera vez como áreas de conservación para esta ave playera migratoria.
{"title":"Áreas de conservación para zarapito de pico recto Limosa haemastica durante temporada no reproductiva en el sur de Chile","authors":"Claudio Delgado, Jaime A. Cursach, L. Espinosa, Ana Pfeifer, J. Cárdenas","doi":"10.22370/rbmo.2022.57.2.3528","DOIUrl":"https://doi.org/10.22370/rbmo.2022.57.2.3528","url":null,"abstract":"El zarapito de pico recto (Limosa haemastica) es un ave playera migratoria considerada de alta preocupación para la conservación. El objetivo del presente trabajo fue determinar sitios de uso de L. haemastica, mediante monitoreo satelital, durante temporada no reproductiva, en la Región de Los Lagos, sur de Chile. Se entrega un listado de sitios identificados como relevantes para esta especie, junto con detalles de los movimientos de las aves entre distintos humedales marinos y estuarinos de la Región. Se elaboró una base de datos espacial generada por siete transmisores satelitales instalados en individuos de L. haemastica. De estos, cinco fueron instalados en noviembre 2015 en el humedal marino de Chullec (42,47°S; 73,53°O), Chiloé. Mientras que los otros dos fueron instalados en noviembre 2020 en el humedal La Pasada (41,60°S; 73,59°O), Maullín. Los resultados indicaron que L. haemastica utiliza distintos humedales marinos y estuarinos de la Región de Los Lagos, tanto continentales como insulares. Estos movimientos mostraron un patrón de uso que permite proponer una red de sitios que conecta el paisaje continental e insular. En total, se identificaron 25 sitios importantes para L. haemastica en Los Lagos, siendo nueve reconocidos por primera vez como áreas de conservación para esta ave playera migratoria.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127130469","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 : 2023-05-23DOI: 10.22370/rbmo.2022.57.2.3531
F. Pancaldi, Edgar Mauricio Becerril-García, Jesús Erick Higuera-Rivas
This report provides observations regarding chafing interactions from two carcharhinid species, the silky shark, Carcharhinus falciformis and the Galapagos shark, C. galapagensis, on whale sharks, Rhincodon typus, in the Revillagigedo National Park, Mexico. Four events were observed between 2013 and 2019 by means of SCUBA diving and drone aerial surveys. These interactions appeared to be casual and triggered by the large dimensions and slow swimming speed of the whale sharks.
{"title":"Chafing behaviour from two carcharhinid shark species Carcharhinus falciformis and C. galapagensis on whale sharks Rhincodon typus","authors":"F. Pancaldi, Edgar Mauricio Becerril-García, Jesús Erick Higuera-Rivas","doi":"10.22370/rbmo.2022.57.2.3531","DOIUrl":"https://doi.org/10.22370/rbmo.2022.57.2.3531","url":null,"abstract":"This report provides observations regarding chafing interactions from two carcharhinid species, the silky shark, Carcharhinus falciformis and the Galapagos shark, C. galapagensis, on whale sharks, Rhincodon typus, in the Revillagigedo National Park, Mexico. Four events were observed between 2013 and 2019 by means of SCUBA diving and drone aerial surveys. These interactions appeared to be casual and triggered by the large dimensions and slow swimming speed of the whale sharks.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125211063","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}
This preliminarily study aims at increasing our understanding of an assemblage of coastal batoids on the northern coast of Peru by determining species composition, body size structure and its behaviour in Los Órganos bay, Piura. During 20 field trips in Los Organos Bay, Piura region, between the years 2016, 2017, and 2019, eighty-six individuals were sampled belonging to eight species: Zapteryx xyster (n= 22), Narcine entemedor (n= 11), Urobatis tumbesensis (n= 7), Urotrygon chilensis (n= 40), Pseudobatos planiceps (n= 1), Urobatis halleri (n= 1), Gymnura crebripunctata (n= 2), Aetobatus laticeps (n= 2). In the study area, a predominance of adult females was observed for Z. xyster, N. entemedor and U. chilensis. These preliminary results suggest that during the morning some batoid species (i.e., Z. xyster, N. entemedor, U. chilensis) use the coastal zone to rest since they are found inactive and partially or totally buried in the sand – N. entemedor could be also hunting through ambush. Future studies should determine if this is a gestation area for some of these batoid species.
本初步研究旨在通过确定Piura Los Órganos湾的物种组成、体型结构和行为，增加我们对秘鲁北部海岸蝙蝠类的了解。2016年、2017年和2019年在Piura地区Los Organos Bay进行了20次野外调查，共采集到8个物种86只，分别是:xyteryx(22只)、entemedor水蛭(11只)、tumbesensis(7只)、chilensis Urotrygon(40只)、planiceps Pseudobatos(1只)、halleri(1只)、Gymnura crebripunctata(2只)、Aetobatus laticeps(2只)。研究区xyster、entemedor和chilensis以雌性成虫为主。这些初步结果表明，在早晨，一些蝙蝠类物种(如Z. xyster, N. entemedor, U. chilensis)由于部分或全部被埋在沙子中而不活动，因此它们利用海岸带休息- N. entemedor也可能通过伏击进行狩猎。未来的研究应该确定这是否是这些类蝙蝠物种的妊娠区。
{"title":"Ensamble de batoideos costeros en el norte del Perú: Conocimiento preliminar","authors":"Adriana González-Pestana, Pamela Molina-Salgado, Álvaro Ponce","doi":"10.22370/rbmo.2022.57.especial.3684","DOIUrl":"https://doi.org/10.22370/rbmo.2022.57.especial.3684","url":null,"abstract":"This preliminarily study aims at increasing our understanding of an assemblage of coastal batoids on the northern coast of Peru by determining species composition, body size structure and its behaviour in Los Órganos bay, Piura. During 20 field trips in Los Organos Bay, Piura region, between the years 2016, 2017, and 2019, eighty-six individuals were sampled belonging to eight species: Zapteryx xyster (n= 22), Narcine entemedor (n= 11), Urobatis tumbesensis (n= 7), Urotrygon chilensis (n= 40), Pseudobatos planiceps (n= 1), Urobatis halleri (n= 1), Gymnura crebripunctata (n= 2), Aetobatus laticeps (n= 2). In the study area, a predominance of adult females was observed for Z. xyster, N. entemedor and U. chilensis. These preliminary results suggest that during the morning some batoid species (i.e., Z. xyster, N. entemedor, U. chilensis) use the coastal zone to rest since they are found inactive and partially or totally buried in the sand – N. entemedor could be also hunting through ambush. Future studies should determine if this is a gestation area for some of these batoid species.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128081563","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 : 2022-10-22DOI: 10.22370/rbmo.2022.57.especial.3683
Adriana González-Pestana, Francisco Córdova-Zavaleta, Vania Arrese-Dávila, Rubén Torrejón-Zegarra, Nicolas Acuña-Perales, Jefffey C. Mangel, Joanna Alfaro-Shigueto
The shortfin mako shark (Isurus oxyrinchus) is considered one of the most important top predators in pelagic marine food webs. The diet of the shortfin mako shark was studied in northern Peru through the analysis of 25 stomach contents. Cephalopods were the most important prey group, followed by bony fishes and crustaceans. A total of 11 prey species were identified, with the Humboldt squid Dosidicus gigas being the most important prey, followed by the Ancistrocheirus lesueurii squid. The trophic level was 4.3 (tertiary predator) and the trophic niche width was 0.47 (intermediate degree of specialization). This study contributes to the limited knowledge about the ecology of the shortfin mako shark in northern Peru.
{"title":"Dieta del tiburón diamante Isurus oxyrinchus en el norte del Perú: Estudio preliminar","authors":"Adriana González-Pestana, Francisco Córdova-Zavaleta, Vania Arrese-Dávila, Rubén Torrejón-Zegarra, Nicolas Acuña-Perales, Jefffey C. Mangel, Joanna Alfaro-Shigueto","doi":"10.22370/rbmo.2022.57.especial.3683","DOIUrl":"https://doi.org/10.22370/rbmo.2022.57.especial.3683","url":null,"abstract":"The shortfin mako shark (Isurus oxyrinchus) is considered one of the most important top predators in pelagic marine food webs. The diet of the shortfin mako shark was studied in northern Peru through the analysis of 25 stomach contents. Cephalopods were the most important prey group, followed by bony fishes and crustaceans. A total of 11 prey species were identified, with the Humboldt squid Dosidicus gigas being the most important prey, followed by the Ancistrocheirus lesueurii squid. The trophic level was 4.3 (tertiary predator) and the trophic niche width was 0.47 (intermediate degree of specialization). This study contributes to the limited knowledge about the ecology of the shortfin mako shark in northern Peru.","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115240382","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 : 2022-10-04DOI: 10.22370/rbmo.2022.57.especial.3177
Jose Ágreda-Arango, Carlos A. Ballesteros, S. Bessudo, Heins Bent-Hooker, Nacor Bolaños, J. P. Caldas, L. O. Duarte, Fabio Gómez, G. Lara, J. Loaiza, P. Mejía-Falla, Manuel Velandia, A. Navia
An analysis on the species richness distribution of marine sharks and batoids for the Colombian Caribbean and Pacific regions was carried out. A total of 138 species was documented in nearby marine waters off Colombia, including 76 sharks and 62 batoids; 20 species occurred on both coasts with the Caribbean generally having a higher observed richness than the Pacific. The Caribbean had high richness values both in the insular as well as in the northern region. However, the highest richness values per spatial unit in the Pacific islands of Gorgona and Malpelo, with completeness richness estimate represented mostly by values below 90%. Richness estimators showed values higher than the observed richness, indicating that the inventories and the description of marine shark and batoid richness in Colombia are still incomplete. Despite this, the results of this study are relevant to make decisions aimed at the conservation of this taxonomic group, both in marine protected and unprotected areas of the Pacific and Caribbean coasts of Colombia
{"title":"Richness distribution patterns of marine elasmobranchs in Colombia","authors":"Jose Ágreda-Arango, Carlos A. Ballesteros, S. Bessudo, Heins Bent-Hooker, Nacor Bolaños, J. P. Caldas, L. O. Duarte, Fabio Gómez, G. Lara, J. Loaiza, P. Mejía-Falla, Manuel Velandia, A. Navia","doi":"10.22370/rbmo.2022.57.especial.3177","DOIUrl":"https://doi.org/10.22370/rbmo.2022.57.especial.3177","url":null,"abstract":"An analysis on the species richness distribution of marine sharks and batoids for the Colombian Caribbean and Pacific regions was carried out. A total of 138 species was documented in nearby marine waters off Colombia, including 76 sharks and 62 batoids; 20 species occurred on both coasts with the Caribbean generally having a higher observed richness than the Pacific. The Caribbean had high richness values both in the insular as well as in the northern region. However, the highest richness values per spatial unit in the Pacific islands of Gorgona and Malpelo, with completeness richness estimate represented mostly by values below 90%. Richness estimators showed values higher than the observed richness, indicating that the inventories and the description of marine shark and batoid richness in Colombia are still incomplete. Despite this, the results of this study are relevant to make decisions aimed at the conservation of this taxonomic group, both in marine protected and unprotected areas of the Pacific and Caribbean coasts of Colombia","PeriodicalId":347046,"journal":{"name":"Revista de Biología Marina y Oceanografía","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120926087","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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