Climate impacts on transocean dispersal and habitat in gray whales from the Pleistocene to 2100.

Molecular Ecology
S Elizabeth AlterMichael Hofreiter

Abstract

Arctic animals face dramatic habitat alteration due to ongoing climate change. Understanding how such species have responded to past glacial cycles can help us forecast their response to today's changing climate. Gray whales are among those marine species likely to be strongly affected by Arctic climate change, but a thorough analysis of past climate impacts on this species has been complicated by lack of information about an extinct population in the Atlantic. While little is known about the history of Atlantic gray whales or their relationship to the extant Pacific population, the extirpation of the Atlantic population during historical times has been attributed to whaling. We used a combination of ancient and modern DNA, radiocarbon dating and predictive habitat modelling to better understand the distribution of gray whales during the Pleistocene and Holocene. Our results reveal that dispersal between the Pacific and Atlantic was climate dependent and occurred both during the Pleistocene prior to the last glacial period and the early Holocene immediately following the opening of the Bering Strait. Genetic diversity in the Atlantic declined over an extended interval that predates the period of intensive commercial whaling, in...Continue Reading

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Citations

Dec 1, 2015·Global Change Biology·C Seabird McKeonKirsten L L Oleson
Feb 18, 2016·Molecular Ecology·Adrien Rieux, François Balloux
Feb 13, 2018·Ecology and Evolution·Felicia VachonTimothy R Frasier
Aug 3, 2016·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Camilla SpellerMichael Hofreiter
Oct 12, 2018·Biology Letters·Anna Brüniche-OlsenJ Andrew DeWoody
Jan 13, 2017·Proceedings. Biological Sciences·Christian KehlmaierUwe Fritz
Jul 28, 2018·Proceedings. Biological Sciences·Ana S L RodriguesCamilla F Speller
Jun 9, 2018·BMC Evolutionary Biology·Anna Brüniche-OlsenJ Andrew DeWoody
Jan 19, 2020·Scientific Reports·Camille AlbouyFabien Leprieur

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