The recovery of North Atlantic right whales, Eubalaena glacialis, has been constrained by human-caused mortality
North Atlantic right whales (NARW), Eubalaena glacialis, were nearly exterminated by historical whaling. Their abundance slowly increased up until 2010, to a maximum of fewer than 500 whales, and since then they have been in decline. We assessed the extent to which the relatively slow increase demon...
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ftpubmed:oai:pubmedcentral.nih.gov:6281934 2023-05-15T16:08:15+02:00 The recovery of North Atlantic right whales, Eubalaena glacialis, has been constrained by human-caused mortality Corkeron, Peter Hamilton, Philip Bannister, John Best, Peter Charlton, Claire Groch, Karina R. Findlay, Ken Rowntree, Victoria Vermeulen, Els Pace, Richard M. 2018-11-07 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6281934/ http://www.ncbi.nlm.nih.gov/pubmed/30564396 https://doi.org/10.1098/rsos.180892 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6281934/ http://www.ncbi.nlm.nih.gov/pubmed/30564396 http://dx.doi.org/10.1098/rsos.180892 © 2018 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. CC-BY Biology (Whole Organism) Text 2018 ftpubmed https://doi.org/10.1098/rsos.180892 2018-12-23T01:18:44Z North Atlantic right whales (NARW), Eubalaena glacialis, were nearly exterminated by historical whaling. Their abundance slowly increased up until 2010, to a maximum of fewer than 500 whales, and since then they have been in decline. We assessed the extent to which the relatively slow increase demonstrated by NARW was intrinsic, and how much could be due to anthropogenic impacts. In order to do so, we first compared calf counts of three populations of Southern right whales (SRW), E. australis, with that of NARW, over the period 1992–2016. By this index, the annual rate of increase of NARW was approximately one-third of that of SRW. Next we constructed a population projection model for female NARW, using the highest annual survival estimates available from recent mark–resight analysis, and assuming a four-year calving interval. The model results indicated an intrinsic rate of increase of 4% per year, approximately twice that observed, and that adult female mortality is the main factor influencing this rate. Necropsy records demonstrate that anthropogenic mortality is the primary cause of known mortality of NARW. Anthropogenic mortality and morbidity has limited the recovery of NARW, and baseline conditions prior to their recent decline were already jeopardizing NARW recovery. Text Eubalaena glacialis North Atlantic PubMed Central (PMC) Royal Society Open Science 5 11 180892 |
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English |
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Biology (Whole Organism) |
spellingShingle |
Biology (Whole Organism) Corkeron, Peter Hamilton, Philip Bannister, John Best, Peter Charlton, Claire Groch, Karina R. Findlay, Ken Rowntree, Victoria Vermeulen, Els Pace, Richard M. The recovery of North Atlantic right whales, Eubalaena glacialis, has been constrained by human-caused mortality |
topic_facet |
Biology (Whole Organism) |
description |
North Atlantic right whales (NARW), Eubalaena glacialis, were nearly exterminated by historical whaling. Their abundance slowly increased up until 2010, to a maximum of fewer than 500 whales, and since then they have been in decline. We assessed the extent to which the relatively slow increase demonstrated by NARW was intrinsic, and how much could be due to anthropogenic impacts. In order to do so, we first compared calf counts of three populations of Southern right whales (SRW), E. australis, with that of NARW, over the period 1992–2016. By this index, the annual rate of increase of NARW was approximately one-third of that of SRW. Next we constructed a population projection model for female NARW, using the highest annual survival estimates available from recent mark–resight analysis, and assuming a four-year calving interval. The model results indicated an intrinsic rate of increase of 4% per year, approximately twice that observed, and that adult female mortality is the main factor influencing this rate. Necropsy records demonstrate that anthropogenic mortality is the primary cause of known mortality of NARW. Anthropogenic mortality and morbidity has limited the recovery of NARW, and baseline conditions prior to their recent decline were already jeopardizing NARW recovery. |
format |
Text |
author |
Corkeron, Peter Hamilton, Philip Bannister, John Best, Peter Charlton, Claire Groch, Karina R. Findlay, Ken Rowntree, Victoria Vermeulen, Els Pace, Richard M. |
author_facet |
Corkeron, Peter Hamilton, Philip Bannister, John Best, Peter Charlton, Claire Groch, Karina R. Findlay, Ken Rowntree, Victoria Vermeulen, Els Pace, Richard M. |
author_sort |
Corkeron, Peter |
title |
The recovery of North Atlantic right whales, Eubalaena glacialis, has been constrained by human-caused mortality |
title_short |
The recovery of North Atlantic right whales, Eubalaena glacialis, has been constrained by human-caused mortality |
title_full |
The recovery of North Atlantic right whales, Eubalaena glacialis, has been constrained by human-caused mortality |
title_fullStr |
The recovery of North Atlantic right whales, Eubalaena glacialis, has been constrained by human-caused mortality |
title_full_unstemmed |
The recovery of North Atlantic right whales, Eubalaena glacialis, has been constrained by human-caused mortality |
title_sort |
recovery of north atlantic right whales, eubalaena glacialis, has been constrained by human-caused mortality |
publisher |
The Royal Society |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6281934/ http://www.ncbi.nlm.nih.gov/pubmed/30564396 https://doi.org/10.1098/rsos.180892 |
genre |
Eubalaena glacialis North Atlantic |
genre_facet |
Eubalaena glacialis North Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6281934/ http://www.ncbi.nlm.nih.gov/pubmed/30564396 http://dx.doi.org/10.1098/rsos.180892 |
op_rights |
© 2018 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1098/rsos.180892 |
container_title |
Royal Society Open Science |
container_volume |
5 |
container_issue |
11 |
container_start_page |
180892 |
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1766404323273605120 |