Effective population size and the genetic consequences of commercial whaling on the humpback whales (Megaptera novaeangliae) from Southwestern Atlantic Ocean
Abstract Genotypes of 10 microsatellite loci of 420 humpback whales from the Southwestern Atlantic Ocean population were used to estimate for the first time its contemporary effective (Ne) and census (Nc) population sizes and to test the genetic effect of commercial whaling. The results are in agree...
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ftjscielo:oai:scielo:S1415-47572018000200253 2023-05-15T16:35:55+02:00 Effective population size and the genetic consequences of commercial whaling on the humpback whales (Megaptera novaeangliae) from Southwestern Atlantic Ocean Cypriano-Souza,Ana Lúcia da Silva,Tiago Ferraz Engel,Márcia H. Bonatto,Sandro L. 2018-01-01 text/html http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000200253 en eng Sociedade Brasileira de Genética 10.1590/1678-4685-gmb-2017-0052 info:eu-repo/semantics/openAccess Genetics and Molecular Biology v.41 n.1 suppl.1 2018 Commercial whaling bottleneck humpback whale microsatellites demography info:eu-repo/semantics/article 2018 ftjscielo 2018-05-10T17:40:12Z Abstract Genotypes of 10 microsatellite loci of 420 humpback whales from the Southwestern Atlantic Ocean population were used to estimate for the first time its contemporary effective (Ne) and census (Nc) population sizes and to test the genetic effect of commercial whaling. The results are in agreement with our previous studies that found high genetic diversity for this breeding population. Using an approximate Bayesian computation approach, the scenario of constant Ne was significantly supported over scenarios with moderate to strong size changes during the commercial whaling period. The previous generation Nc (Ne multiplied by 3.6), which should corresponds to the years between around 1980 and 1990, was estimated between ~2,600 and 6,800 whales (point estimate ~4,000), and is broadly compatible with the recent abundance surveys extrapolated to the past using a growth rate of 7.4% per annum. The long-term Nc in the constant scenario (point estimate ~15,000) was broadly compatible (considering the confidence interval) with pre-whaling catch records estimates (point estimate ~25,000). Overall, our results shown that the Southwestern Atlantic Ocean humpback whale population is genetically very diverse and resisted well to the strong population reduction during commercial whaling. Article in Journal/Newspaper Humpback Whale Megaptera novaeangliae SciELO Brazil (Scientific Electronic Library Online) |
institution |
Open Polar |
collection |
SciELO Brazil (Scientific Electronic Library Online) |
op_collection_id |
ftjscielo |
language |
English |
topic |
Commercial whaling bottleneck humpback whale microsatellites demography |
spellingShingle |
Commercial whaling bottleneck humpback whale microsatellites demography Cypriano-Souza,Ana Lúcia da Silva,Tiago Ferraz Engel,Márcia H. Bonatto,Sandro L. Effective population size and the genetic consequences of commercial whaling on the humpback whales (Megaptera novaeangliae) from Southwestern Atlantic Ocean |
topic_facet |
Commercial whaling bottleneck humpback whale microsatellites demography |
description |
Abstract Genotypes of 10 microsatellite loci of 420 humpback whales from the Southwestern Atlantic Ocean population were used to estimate for the first time its contemporary effective (Ne) and census (Nc) population sizes and to test the genetic effect of commercial whaling. The results are in agreement with our previous studies that found high genetic diversity for this breeding population. Using an approximate Bayesian computation approach, the scenario of constant Ne was significantly supported over scenarios with moderate to strong size changes during the commercial whaling period. The previous generation Nc (Ne multiplied by 3.6), which should corresponds to the years between around 1980 and 1990, was estimated between ~2,600 and 6,800 whales (point estimate ~4,000), and is broadly compatible with the recent abundance surveys extrapolated to the past using a growth rate of 7.4% per annum. The long-term Nc in the constant scenario (point estimate ~15,000) was broadly compatible (considering the confidence interval) with pre-whaling catch records estimates (point estimate ~25,000). Overall, our results shown that the Southwestern Atlantic Ocean humpback whale population is genetically very diverse and resisted well to the strong population reduction during commercial whaling. |
format |
Article in Journal/Newspaper |
author |
Cypriano-Souza,Ana Lúcia da Silva,Tiago Ferraz Engel,Márcia H. Bonatto,Sandro L. |
author_facet |
Cypriano-Souza,Ana Lúcia da Silva,Tiago Ferraz Engel,Márcia H. Bonatto,Sandro L. |
author_sort |
Cypriano-Souza,Ana Lúcia |
title |
Effective population size and the genetic consequences of commercial whaling on the humpback whales (Megaptera novaeangliae) from Southwestern Atlantic Ocean |
title_short |
Effective population size and the genetic consequences of commercial whaling on the humpback whales (Megaptera novaeangliae) from Southwestern Atlantic Ocean |
title_full |
Effective population size and the genetic consequences of commercial whaling on the humpback whales (Megaptera novaeangliae) from Southwestern Atlantic Ocean |
title_fullStr |
Effective population size and the genetic consequences of commercial whaling on the humpback whales (Megaptera novaeangliae) from Southwestern Atlantic Ocean |
title_full_unstemmed |
Effective population size and the genetic consequences of commercial whaling on the humpback whales (Megaptera novaeangliae) from Southwestern Atlantic Ocean |
title_sort |
effective population size and the genetic consequences of commercial whaling on the humpback whales (megaptera novaeangliae) from southwestern atlantic ocean |
publisher |
Sociedade Brasileira de Genética |
publishDate |
2018 |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000200253 |
genre |
Humpback Whale Megaptera novaeangliae |
genre_facet |
Humpback Whale Megaptera novaeangliae |
op_source |
Genetics and Molecular Biology v.41 n.1 suppl.1 2018 |
op_relation |
10.1590/1678-4685-gmb-2017-0052 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766026232922636288 |