Evolutionary impacts differ between two exploited populations of northern bottlenose whale (Hyperoodon ampullatus)
Interpretation of conservation status should be informed by an appreciation of genetic diversity, past demography, and overall trends in population size, which contribute to a species' evolutionary potential and resilience to genetic risks. Low genetic diversity can be symptomatic of rapid demo...
Published in: | Ecology and Evolution |
---|---|
Main Authors: | , , , , |
Format: | Text |
Language: | English |
Published: |
John Wiley and Sons Inc.
2019
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6912904/ http://www.ncbi.nlm.nih.gov/pubmed/31871667 https://doi.org/10.1002/ece3.5813 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:6912904 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:6912904 2023-05-15T16:00:14+02:00 Evolutionary impacts differ between two exploited populations of northern bottlenose whale (Hyperoodon ampullatus) Feyrer, Laura Joan Bentzen, Paul Whitehead, Hal Paterson, Ian G. Einfeldt, Anthony 2019-11-19 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6912904/ http://www.ncbi.nlm.nih.gov/pubmed/31871667 https://doi.org/10.1002/ece3.5813 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6912904/ http://www.ncbi.nlm.nih.gov/pubmed/31871667 http://dx.doi.org/10.1002/ece3.5813 © 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Original Research Text 2019 ftpubmed https://doi.org/10.1002/ece3.5813 2019-12-29T01:20:38Z Interpretation of conservation status should be informed by an appreciation of genetic diversity, past demography, and overall trends in population size, which contribute to a species' evolutionary potential and resilience to genetic risks. Low genetic diversity can be symptomatic of rapid demographic declines and impose genetic risks to populations, but can also be maintained by natural processes. The northern bottlenose whale Hyperoodon ampullatus has the lowest known mitochondrial diversity of any cetacean and was intensely whaled in the Northwest Atlantic over the last century, but whether exploitation imposed genetic risks that could limit recovery is unknown. We sequenced full mitogenomes and genotyped 37 novel microsatellites for 128 individuals from known areas of abundance in the Scotian Shelf, Northern and Southern Labrador, Davis Strait, and Iceland, and a newly discovered group off Newfoundland. Despite low diversity and shared haplotypes across all regions, both markers supported the Endangered Scotian Shelf population as distinct from the combined northern regions. The genetic affinity of Newfoundland was uncertain, suggesting an area of mixing with no clear population distinction for the region. Demographic reconstruction using mitogenomes suggests that the northern region underwent population expansion following the last glacial maximum, but for the peripheral Scotian Shelf population, a stable demographic trend was followed by a drastic decline over a temporal scale consistent with increasing human activity in the Northwest Atlantic. Low connectivity between the Scotian Shelf and the rest of the Atlantic likely compounded the impact of intensive whaling for this species, potentially imposing genetic risks affecting recovery of this population. We highlight how the combination of historical environmental conditions and modern exploitation of this species has had very different evolutionary impacts on structured populations of northern bottlenose whales across the western North Atlantic. Text Davis Strait hyperoodon ampullatus Iceland Newfoundland North Atlantic Northern bottlenose whale Northwest Atlantic PubMed Central (PMC) Newfoundland Ecology and Evolution 9 23 13567 13584 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Original Research |
spellingShingle |
Original Research Feyrer, Laura Joan Bentzen, Paul Whitehead, Hal Paterson, Ian G. Einfeldt, Anthony Evolutionary impacts differ between two exploited populations of northern bottlenose whale (Hyperoodon ampullatus) |
topic_facet |
Original Research |
description |
Interpretation of conservation status should be informed by an appreciation of genetic diversity, past demography, and overall trends in population size, which contribute to a species' evolutionary potential and resilience to genetic risks. Low genetic diversity can be symptomatic of rapid demographic declines and impose genetic risks to populations, but can also be maintained by natural processes. The northern bottlenose whale Hyperoodon ampullatus has the lowest known mitochondrial diversity of any cetacean and was intensely whaled in the Northwest Atlantic over the last century, but whether exploitation imposed genetic risks that could limit recovery is unknown. We sequenced full mitogenomes and genotyped 37 novel microsatellites for 128 individuals from known areas of abundance in the Scotian Shelf, Northern and Southern Labrador, Davis Strait, and Iceland, and a newly discovered group off Newfoundland. Despite low diversity and shared haplotypes across all regions, both markers supported the Endangered Scotian Shelf population as distinct from the combined northern regions. The genetic affinity of Newfoundland was uncertain, suggesting an area of mixing with no clear population distinction for the region. Demographic reconstruction using mitogenomes suggests that the northern region underwent population expansion following the last glacial maximum, but for the peripheral Scotian Shelf population, a stable demographic trend was followed by a drastic decline over a temporal scale consistent with increasing human activity in the Northwest Atlantic. Low connectivity between the Scotian Shelf and the rest of the Atlantic likely compounded the impact of intensive whaling for this species, potentially imposing genetic risks affecting recovery of this population. We highlight how the combination of historical environmental conditions and modern exploitation of this species has had very different evolutionary impacts on structured populations of northern bottlenose whales across the western North Atlantic. |
format |
Text |
author |
Feyrer, Laura Joan Bentzen, Paul Whitehead, Hal Paterson, Ian G. Einfeldt, Anthony |
author_facet |
Feyrer, Laura Joan Bentzen, Paul Whitehead, Hal Paterson, Ian G. Einfeldt, Anthony |
author_sort |
Feyrer, Laura Joan |
title |
Evolutionary impacts differ between two exploited populations of northern bottlenose whale (Hyperoodon ampullatus) |
title_short |
Evolutionary impacts differ between two exploited populations of northern bottlenose whale (Hyperoodon ampullatus) |
title_full |
Evolutionary impacts differ between two exploited populations of northern bottlenose whale (Hyperoodon ampullatus) |
title_fullStr |
Evolutionary impacts differ between two exploited populations of northern bottlenose whale (Hyperoodon ampullatus) |
title_full_unstemmed |
Evolutionary impacts differ between two exploited populations of northern bottlenose whale (Hyperoodon ampullatus) |
title_sort |
evolutionary impacts differ between two exploited populations of northern bottlenose whale (hyperoodon ampullatus) |
publisher |
John Wiley and Sons Inc. |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6912904/ http://www.ncbi.nlm.nih.gov/pubmed/31871667 https://doi.org/10.1002/ece3.5813 |
geographic |
Newfoundland |
geographic_facet |
Newfoundland |
genre |
Davis Strait hyperoodon ampullatus Iceland Newfoundland North Atlantic Northern bottlenose whale Northwest Atlantic |
genre_facet |
Davis Strait hyperoodon ampullatus Iceland Newfoundland North Atlantic Northern bottlenose whale Northwest Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6912904/ http://www.ncbi.nlm.nih.gov/pubmed/31871667 http://dx.doi.org/10.1002/ece3.5813 |
op_rights |
© 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.5813 |
container_title |
Ecology and Evolution |
container_volume |
9 |
container_issue |
23 |
container_start_page |
13567 |
op_container_end_page |
13584 |
_version_ |
1766396119662723072 |