New insights into the reproduction and migration of the porbeagle shark Lamna nasus (Bonnaterre 1788) in the Southwest Atlantic Ocean.
The objective of this study was to estimate the reproductive parameters of porbeagle shark in the Southwest Atlantic Ocean and thus characterize the adult fraction of this population. Therefore, 1012 specimens were measured by scientific observers on board the commercial trawl fleet operating south...
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Online Access: | https://doi.org/10.1111/jfb.15786 https://pubmed.ncbi.nlm.nih.gov/38752522 |
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ftpubmed:38752522 2024-06-09T07:47:32+00:00 New insights into the reproduction and migration of the porbeagle shark Lamna nasus (Bonnaterre 1788) in the Southwest Atlantic Ocean. Colonello, Jorge H Cortés, Federico Burla, Juan Storni, Benjamin Laurentxena, Mercedes Allega, Lucrecia 2024 May 16 https://doi.org/10.1111/jfb.15786 https://pubmed.ncbi.nlm.nih.gov/38752522 eng eng Wiley https://doi.org/10.1111/jfb.15786 https://pubmed.ncbi.nlm.nih.gov/38752522 © 2024 Fisheries Society of the British Isles. J Fish Biol ISSN:1095-8649 Lamnidae Southern Hemisphere by‐catch gestation migration reproduction Journal Article 2024 ftpubmed https://doi.org/10.1111/jfb.15786 2024-05-16T16:03:00Z The objective of this study was to estimate the reproductive parameters of porbeagle shark in the Southwest Atlantic Ocean and thus characterize the adult fraction of this population. Therefore, 1012 specimens were measured by scientific observers on board the commercial trawl fleet operating south of 50° S. The size range of the specimens was from 77 to 292 cm fork length (LF). The mean size at maturity was estimated to be 153 cm LF for males and 172 cm LF for females. Porbeagle shark catches were recorded throughout the year, with the highest frequency occurring between November and June. The presence of pregnant females was observed from December to July, along with an increase in the average size of embryos in each litter. The information presented in this study improves the knowledge of the reproductive biology and allows to propose a migratory pattern of adult porbeagle females in the Southwest Atlantic Ocean. The likely seasonal increase in vulnerability of this shark to austral trawl fishery, despite all conservation management measures established in Argentina, underscores the importance of promoting its proper management and conservation given the need to improve understanding of porbeagle population dynamics in the Southern Hemisphere. Article in Journal/Newspaper Lamna nasus Porbeagle PubMed Central (PMC) Austral Argentina Journal of Fish Biology |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Lamnidae Southern Hemisphere by‐catch gestation migration reproduction |
spellingShingle |
Lamnidae Southern Hemisphere by‐catch gestation migration reproduction Colonello, Jorge H Cortés, Federico Burla, Juan Storni, Benjamin Laurentxena, Mercedes Allega, Lucrecia New insights into the reproduction and migration of the porbeagle shark Lamna nasus (Bonnaterre 1788) in the Southwest Atlantic Ocean. |
topic_facet |
Lamnidae Southern Hemisphere by‐catch gestation migration reproduction |
description |
The objective of this study was to estimate the reproductive parameters of porbeagle shark in the Southwest Atlantic Ocean and thus characterize the adult fraction of this population. Therefore, 1012 specimens were measured by scientific observers on board the commercial trawl fleet operating south of 50° S. The size range of the specimens was from 77 to 292 cm fork length (LF). The mean size at maturity was estimated to be 153 cm LF for males and 172 cm LF for females. Porbeagle shark catches were recorded throughout the year, with the highest frequency occurring between November and June. The presence of pregnant females was observed from December to July, along with an increase in the average size of embryos in each litter. The information presented in this study improves the knowledge of the reproductive biology and allows to propose a migratory pattern of adult porbeagle females in the Southwest Atlantic Ocean. The likely seasonal increase in vulnerability of this shark to austral trawl fishery, despite all conservation management measures established in Argentina, underscores the importance of promoting its proper management and conservation given the need to improve understanding of porbeagle population dynamics in the Southern Hemisphere. |
format |
Article in Journal/Newspaper |
author |
Colonello, Jorge H Cortés, Federico Burla, Juan Storni, Benjamin Laurentxena, Mercedes Allega, Lucrecia |
author_facet |
Colonello, Jorge H Cortés, Federico Burla, Juan Storni, Benjamin Laurentxena, Mercedes Allega, Lucrecia |
author_sort |
Colonello, Jorge H |
title |
New insights into the reproduction and migration of the porbeagle shark Lamna nasus (Bonnaterre 1788) in the Southwest Atlantic Ocean. |
title_short |
New insights into the reproduction and migration of the porbeagle shark Lamna nasus (Bonnaterre 1788) in the Southwest Atlantic Ocean. |
title_full |
New insights into the reproduction and migration of the porbeagle shark Lamna nasus (Bonnaterre 1788) in the Southwest Atlantic Ocean. |
title_fullStr |
New insights into the reproduction and migration of the porbeagle shark Lamna nasus (Bonnaterre 1788) in the Southwest Atlantic Ocean. |
title_full_unstemmed |
New insights into the reproduction and migration of the porbeagle shark Lamna nasus (Bonnaterre 1788) in the Southwest Atlantic Ocean. |
title_sort |
new insights into the reproduction and migration of the porbeagle shark lamna nasus (bonnaterre 1788) in the southwest atlantic ocean. |
publisher |
Wiley |
publishDate |
2024 |
url |
https://doi.org/10.1111/jfb.15786 https://pubmed.ncbi.nlm.nih.gov/38752522 |
geographic |
Austral Argentina |
geographic_facet |
Austral Argentina |
genre |
Lamna nasus Porbeagle |
genre_facet |
Lamna nasus Porbeagle |
op_source |
J Fish Biol ISSN:1095-8649 |
op_relation |
https://doi.org/10.1111/jfb.15786 https://pubmed.ncbi.nlm.nih.gov/38752522 |
op_rights |
© 2024 Fisheries Society of the British Isles. |
op_doi |
https://doi.org/10.1111/jfb.15786 |
container_title |
Journal of Fish Biology |
_version_ |
1801378683918745600 |