Fin whale survival and abundance in the Gulf of St. Lawrence, Canada
The fin whale Balaenoptera physalus, the second largest species in the animal kingdom to have lived on Earth, was heavily targeted during the industrial whaling era. North Atlantic whaling for this species ended in 1987 and it is unclear if the populations are recovering. The stock structure in the...
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ftdoajarticles:oai:doaj.org/article:3a5fcaf53a33489795c4a5239e4ebc67 2023-05-15T15:36:39+02:00 Fin whale survival and abundance in the Gulf of St. Lawrence, Canada C Ramp J Delarue M Bérubé PS Hammond R Sears 2014-02-01T00:00:00Z https://doi.org/10.3354/esr00571 https://doaj.org/article/3a5fcaf53a33489795c4a5239e4ebc67 EN eng Inter-Research https://www.int-res.com/abstracts/esr/v23/n2/p125-132/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr00571 https://doaj.org/article/3a5fcaf53a33489795c4a5239e4ebc67 Endangered Species Research, Vol 23, Iss 2, Pp 125-132 (2014) Zoology QL1-991 Botany QK1-989 article 2014 ftdoajarticles https://doi.org/10.3354/esr00571 2022-12-31T11:05:56Z The fin whale Balaenoptera physalus, the second largest species in the animal kingdom to have lived on Earth, was heavily targeted during the industrial whaling era. North Atlantic whaling for this species ended in 1987 and it is unclear if the populations are recovering. The stock structure in the North Atlantic is still under debate, but several lines of evidence suggest that fin whales in the Gulf of St. Lawrence may form a discrete stock with limited exchange with the rest of the North Atlantic. We applied mark-recapture models to 21 yr of photo-identification data from the Jacques-Cartier Passage to estimate the abundance and, for the first time, a survival rate based on live re-sightings for this stock of fin whales. Using the Cormack-Jolly-Seber model, we estimated a unisex non-calf apparent survival rate of 0.955 (95% CI: 0.936 to 0.969) for the period 1990 to 2010, declining in the last 4 yr of the study. The reduced survivorship was likely caused by a lower site fidelity combined with a higher mortality. The POPAN model yielded a super-population estimate of 328 individuals (95% CI: 306 to 350) for the period 2004 to 2010, and confirmed the negative trend in apparent survival and annual abundance, indicating that the population has not increased since the last large-scale surveys from 1974 and 1997. Article in Journal/Newspaper Balaenoptera physalus Fin whale North Atlantic Directory of Open Access Journals: DOAJ Articles Canada Endangered Species Research 23 2 125 132 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Zoology QL1-991 Botany QK1-989 |
spellingShingle |
Zoology QL1-991 Botany QK1-989 C Ramp J Delarue M Bérubé PS Hammond R Sears Fin whale survival and abundance in the Gulf of St. Lawrence, Canada |
topic_facet |
Zoology QL1-991 Botany QK1-989 |
description |
The fin whale Balaenoptera physalus, the second largest species in the animal kingdom to have lived on Earth, was heavily targeted during the industrial whaling era. North Atlantic whaling for this species ended in 1987 and it is unclear if the populations are recovering. The stock structure in the North Atlantic is still under debate, but several lines of evidence suggest that fin whales in the Gulf of St. Lawrence may form a discrete stock with limited exchange with the rest of the North Atlantic. We applied mark-recapture models to 21 yr of photo-identification data from the Jacques-Cartier Passage to estimate the abundance and, for the first time, a survival rate based on live re-sightings for this stock of fin whales. Using the Cormack-Jolly-Seber model, we estimated a unisex non-calf apparent survival rate of 0.955 (95% CI: 0.936 to 0.969) for the period 1990 to 2010, declining in the last 4 yr of the study. The reduced survivorship was likely caused by a lower site fidelity combined with a higher mortality. The POPAN model yielded a super-population estimate of 328 individuals (95% CI: 306 to 350) for the period 2004 to 2010, and confirmed the negative trend in apparent survival and annual abundance, indicating that the population has not increased since the last large-scale surveys from 1974 and 1997. |
format |
Article in Journal/Newspaper |
author |
C Ramp J Delarue M Bérubé PS Hammond R Sears |
author_facet |
C Ramp J Delarue M Bérubé PS Hammond R Sears |
author_sort |
C Ramp |
title |
Fin whale survival and abundance in the Gulf of St. Lawrence, Canada |
title_short |
Fin whale survival and abundance in the Gulf of St. Lawrence, Canada |
title_full |
Fin whale survival and abundance in the Gulf of St. Lawrence, Canada |
title_fullStr |
Fin whale survival and abundance in the Gulf of St. Lawrence, Canada |
title_full_unstemmed |
Fin whale survival and abundance in the Gulf of St. Lawrence, Canada |
title_sort |
fin whale survival and abundance in the gulf of st. lawrence, canada |
publisher |
Inter-Research |
publishDate |
2014 |
url |
https://doi.org/10.3354/esr00571 https://doaj.org/article/3a5fcaf53a33489795c4a5239e4ebc67 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Balaenoptera physalus Fin whale North Atlantic |
genre_facet |
Balaenoptera physalus Fin whale North Atlantic |
op_source |
Endangered Species Research, Vol 23, Iss 2, Pp 125-132 (2014) |
op_relation |
https://www.int-res.com/abstracts/esr/v23/n2/p125-132/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr00571 https://doaj.org/article/3a5fcaf53a33489795c4a5239e4ebc67 |
op_doi |
https://doi.org/10.3354/esr00571 |
container_title |
Endangered Species Research |
container_volume |
23 |
container_issue |
2 |
container_start_page |
125 |
op_container_end_page |
132 |
_version_ |
1766367018805624832 |