Genetic footprint of population fragmentation and contemporary collapse in a freshwater cetacean
Understanding demographic trends and patterns of gene flow in an endangered species is crucial for devising conservation strategies. Here, we examined the extent of population structure and recent evolution of the critically endangered Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorien...
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ftchinacadsciihb:oai:ir.ihb.ac.cn:342005/30755 2023-05-15T17:59:13+02:00 Genetic footprint of population fragmentation and contemporary collapse in a freshwater cetacean Chen, Minmin Fontaine, Michael C. Ben Chehida, Yacine Zheng, Jinsong Labbe, Frederic Mei, Zhigang Hao, Yujiang Wang, Kexiong Wu, Min Zhao, Qingzhong Wang, Ding 2017-10-31 http://ir.ihb.ac.cn/handle/342005/30755 https://doi.org/10.1038/s41598-017-14812-z 英语 eng NATURE PUBLISHING GROUP SCIENTIFIC REPORTS http://ir.ihb.ac.cn/handle/342005/30755 doi:10.1038/s41598-017-14812-z Science & Technology - Other Topics Multidisciplinary Sciences YANGTZE FINLESS PORPOISE APPROXIMATE BAYESIAN COMPUTATION NEOPHOCAENA-ASIAEORIENTALIS-ASIAEORIENTALIS MULTILOCUS GENOTYPE DATA MICROSATELLITE LOCI LINKAGE DISEQUILIBRIUM MULTIVARIATE-ANALYSIS ENVIRONMENTAL-CHANGE PHOCOENA-PHOCOENA DNA POLYMORPHISM 期刊论文 2017 ftchinacadsciihb https://doi.org/10.1038/s41598-017-14812-z 2019-07-12T00:04:07Z Understanding demographic trends and patterns of gene flow in an endangered species is crucial for devising conservation strategies. Here, we examined the extent of population structure and recent evolution of the critically endangered Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis). By analysing genetic variation at the mitochondrial and nuclear microsatellite loci for 148 individuals, we identified three populations along the Yangtze River, each one connected to a group of admixed ancestry. Each population displayed extremely low genetic diversity, consistent with extremely small effective size (<= 92 individuals). Habitat degradation and distribution gaps correlated with highly asymmetric gene-flow that was inefficient in maintaining connectivity between populations. Genetic inferences of historical demography revealed that the populations in the Yangtze descended from a small number of founders colonizing the river from the sea during the last Ice Age. The colonization was followed by a rapid population split during the last millennium predating the Chinese Modern Economy Development. However, genetic diversity showed a clear footprint of population contraction over the last 50 years leaving only similar to 2 % of the pre-collapsed size, consistent with the population collapses reported from field studies. This genetic perspective Report Phocoena phocoena Institute of Hydrobiology, Chinese Academy of Sciences: IHB OpenIR Scientific Reports 7 1 |
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Open Polar |
collection |
Institute of Hydrobiology, Chinese Academy of Sciences: IHB OpenIR |
op_collection_id |
ftchinacadsciihb |
language |
English |
topic |
Science & Technology - Other Topics Multidisciplinary Sciences YANGTZE FINLESS PORPOISE APPROXIMATE BAYESIAN COMPUTATION NEOPHOCAENA-ASIAEORIENTALIS-ASIAEORIENTALIS MULTILOCUS GENOTYPE DATA MICROSATELLITE LOCI LINKAGE DISEQUILIBRIUM MULTIVARIATE-ANALYSIS ENVIRONMENTAL-CHANGE PHOCOENA-PHOCOENA DNA POLYMORPHISM |
spellingShingle |
Science & Technology - Other Topics Multidisciplinary Sciences YANGTZE FINLESS PORPOISE APPROXIMATE BAYESIAN COMPUTATION NEOPHOCAENA-ASIAEORIENTALIS-ASIAEORIENTALIS MULTILOCUS GENOTYPE DATA MICROSATELLITE LOCI LINKAGE DISEQUILIBRIUM MULTIVARIATE-ANALYSIS ENVIRONMENTAL-CHANGE PHOCOENA-PHOCOENA DNA POLYMORPHISM Chen, Minmin Fontaine, Michael C. Ben Chehida, Yacine Zheng, Jinsong Labbe, Frederic Mei, Zhigang Hao, Yujiang Wang, Kexiong Wu, Min Zhao, Qingzhong Wang, Ding Genetic footprint of population fragmentation and contemporary collapse in a freshwater cetacean |
topic_facet |
Science & Technology - Other Topics Multidisciplinary Sciences YANGTZE FINLESS PORPOISE APPROXIMATE BAYESIAN COMPUTATION NEOPHOCAENA-ASIAEORIENTALIS-ASIAEORIENTALIS MULTILOCUS GENOTYPE DATA MICROSATELLITE LOCI LINKAGE DISEQUILIBRIUM MULTIVARIATE-ANALYSIS ENVIRONMENTAL-CHANGE PHOCOENA-PHOCOENA DNA POLYMORPHISM |
description |
Understanding demographic trends and patterns of gene flow in an endangered species is crucial for devising conservation strategies. Here, we examined the extent of population structure and recent evolution of the critically endangered Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis). By analysing genetic variation at the mitochondrial and nuclear microsatellite loci for 148 individuals, we identified three populations along the Yangtze River, each one connected to a group of admixed ancestry. Each population displayed extremely low genetic diversity, consistent with extremely small effective size (<= 92 individuals). Habitat degradation and distribution gaps correlated with highly asymmetric gene-flow that was inefficient in maintaining connectivity between populations. Genetic inferences of historical demography revealed that the populations in the Yangtze descended from a small number of founders colonizing the river from the sea during the last Ice Age. The colonization was followed by a rapid population split during the last millennium predating the Chinese Modern Economy Development. However, genetic diversity showed a clear footprint of population contraction over the last 50 years leaving only similar to 2 % of the pre-collapsed size, consistent with the population collapses reported from field studies. This genetic perspective |
format |
Report |
author |
Chen, Minmin Fontaine, Michael C. Ben Chehida, Yacine Zheng, Jinsong Labbe, Frederic Mei, Zhigang Hao, Yujiang Wang, Kexiong Wu, Min Zhao, Qingzhong Wang, Ding |
author_facet |
Chen, Minmin Fontaine, Michael C. Ben Chehida, Yacine Zheng, Jinsong Labbe, Frederic Mei, Zhigang Hao, Yujiang Wang, Kexiong Wu, Min Zhao, Qingzhong Wang, Ding |
author_sort |
Chen, Minmin |
title |
Genetic footprint of population fragmentation and contemporary collapse in a freshwater cetacean |
title_short |
Genetic footprint of population fragmentation and contemporary collapse in a freshwater cetacean |
title_full |
Genetic footprint of population fragmentation and contemporary collapse in a freshwater cetacean |
title_fullStr |
Genetic footprint of population fragmentation and contemporary collapse in a freshwater cetacean |
title_full_unstemmed |
Genetic footprint of population fragmentation and contemporary collapse in a freshwater cetacean |
title_sort |
genetic footprint of population fragmentation and contemporary collapse in a freshwater cetacean |
publisher |
NATURE PUBLISHING GROUP |
publishDate |
2017 |
url |
http://ir.ihb.ac.cn/handle/342005/30755 https://doi.org/10.1038/s41598-017-14812-z |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_relation |
SCIENTIFIC REPORTS http://ir.ihb.ac.cn/handle/342005/30755 doi:10.1038/s41598-017-14812-z |
op_doi |
https://doi.org/10.1038/s41598-017-14812-z |
container_title |
Scientific Reports |
container_volume |
7 |
container_issue |
1 |
_version_ |
1766167984544415744 |