Are Antarctic minke whales unusually abundant because of 20th century whaling?
Severe declines in megafauna worldwide illuminate the role of top predators in ecosystem structure. In the Antarctic, the Krill Surplus Hypothesis posits that the killing of more than 2 million large whales led to competitive release for smaller krill-eating species like the Antarctic minke whale. I...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.667.1865 2023-05-15T13:46:34+02:00 Are Antarctic minke whales unusually abundant because of 20th century whaling? Kristen C. Ruegg Eric C. Anderson C. Scott Baker Murdoch Vant Jennifer A. Jackson Stephen R. Palumbi The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.667.1865 http://palumbi.stanford.edu/manuscripts/are+antarctic+minke+whales.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.667.1865 http://palumbi.stanford.edu/manuscripts/are+antarctic+minke+whales.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://palumbi.stanford.edu/manuscripts/are+antarctic+minke+whales.pdf Antarctic marine ecosystem Antarctic minke whale coalescent modelling competi- tive release effective population size krill surplus hypothesis text ftciteseerx 2016-01-08T17:08:58Z Severe declines in megafauna worldwide illuminate the role of top predators in ecosystem structure. In the Antarctic, the Krill Surplus Hypothesis posits that the killing of more than 2 million large whales led to competitive release for smaller krill-eating species like the Antarctic minke whale. If true, the current size of the Antarctic minke whale population may be unusually high as an indirect result of whaling. Here, we estimate the long-term population size of the Antarctic minke whale prior to whaling by sequencing 11 nuclear genetic markers from 52 modern samples purchased in Japanese meat markets. We use coalescent simulations to explore the potential influence of population substructure and find that even though our samples are drawn from a limited geographic area, our estimate reflects ocean-wide genetic diversity. Using Bayesian estimates of the mutation rate and coalescent-based analyses of genetic diversity across loci, we calculate the long-term population size of the Antarctic minke whale to be 670 000 individuals (95 % confidence interval: 374 000–1 150 000). Our estimate of long-term abundance is similar to, or greater than, contemporary abundance estimates, suggesting that managing Antarctic ecosystems under the assumption that Antarctic minke whales are unusually abundant is not warranted. Text Antarc* Antarctic Antarctic Minke whale minke whale Unknown Antarctic The Antarctic Tive ENVELOPE(12.480,12.480,65.107,65.107) |
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ftciteseerx |
language |
English |
topic |
Antarctic marine ecosystem Antarctic minke whale coalescent modelling competi- tive release effective population size krill surplus hypothesis |
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Antarctic marine ecosystem Antarctic minke whale coalescent modelling competi- tive release effective population size krill surplus hypothesis Kristen C. Ruegg Eric C. Anderson C. Scott Baker Murdoch Vant Jennifer A. Jackson Stephen R. Palumbi Are Antarctic minke whales unusually abundant because of 20th century whaling? |
topic_facet |
Antarctic marine ecosystem Antarctic minke whale coalescent modelling competi- tive release effective population size krill surplus hypothesis |
description |
Severe declines in megafauna worldwide illuminate the role of top predators in ecosystem structure. In the Antarctic, the Krill Surplus Hypothesis posits that the killing of more than 2 million large whales led to competitive release for smaller krill-eating species like the Antarctic minke whale. If true, the current size of the Antarctic minke whale population may be unusually high as an indirect result of whaling. Here, we estimate the long-term population size of the Antarctic minke whale prior to whaling by sequencing 11 nuclear genetic markers from 52 modern samples purchased in Japanese meat markets. We use coalescent simulations to explore the potential influence of population substructure and find that even though our samples are drawn from a limited geographic area, our estimate reflects ocean-wide genetic diversity. Using Bayesian estimates of the mutation rate and coalescent-based analyses of genetic diversity across loci, we calculate the long-term population size of the Antarctic minke whale to be 670 000 individuals (95 % confidence interval: 374 000–1 150 000). Our estimate of long-term abundance is similar to, or greater than, contemporary abundance estimates, suggesting that managing Antarctic ecosystems under the assumption that Antarctic minke whales are unusually abundant is not warranted. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Kristen C. Ruegg Eric C. Anderson C. Scott Baker Murdoch Vant Jennifer A. Jackson Stephen R. Palumbi |
author_facet |
Kristen C. Ruegg Eric C. Anderson C. Scott Baker Murdoch Vant Jennifer A. Jackson Stephen R. Palumbi |
author_sort |
Kristen C. Ruegg |
title |
Are Antarctic minke whales unusually abundant because of 20th century whaling? |
title_short |
Are Antarctic minke whales unusually abundant because of 20th century whaling? |
title_full |
Are Antarctic minke whales unusually abundant because of 20th century whaling? |
title_fullStr |
Are Antarctic minke whales unusually abundant because of 20th century whaling? |
title_full_unstemmed |
Are Antarctic minke whales unusually abundant because of 20th century whaling? |
title_sort |
are antarctic minke whales unusually abundant because of 20th century whaling? |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.667.1865 http://palumbi.stanford.edu/manuscripts/are+antarctic+minke+whales.pdf |
long_lat |
ENVELOPE(12.480,12.480,65.107,65.107) |
geographic |
Antarctic The Antarctic Tive |
geographic_facet |
Antarctic The Antarctic Tive |
genre |
Antarc* Antarctic Antarctic Minke whale minke whale |
genre_facet |
Antarc* Antarctic Antarctic Minke whale minke whale |
op_source |
http://palumbi.stanford.edu/manuscripts/are+antarctic+minke+whales.pdf |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.667.1865 http://palumbi.stanford.edu/manuscripts/are+antarctic+minke+whales.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766244301361119232 |