King penguin demography since the last glaciation inferred from genome-wide data

How natural climate cycles, such as past glacial/interglacial patterns, have shaped species distributions at the high-latitude regions of the Southern Hemisphere is still largely unclear. Here, we show how the post-glacial warming following the Last Glacial Maximum (ca 18 000 years ago), allowed the (re)colonization of the fragmented sub-Antarctic habitat by an upperlevel marine predator, the king penguin Aptenodytes patagonicus. Using restriction site-associated DNA sequencing and standard mitochondrial data, we tested the behaviour of subsets of anonymous nuclear loci in inferring past demography through coalescent-based and allele frequency spectrum analyses. Our results show that the king penguin population breeding on Crozet archipelago steeply increased in size, closely following the Holocene warming recorded in the Epica Dome C ice core. The following population growth can be explained by a threshold model in which the ecological requirements of this species (year-round ice-free habitat for breeding and access to a major source of food such as the Antarctic Polar Front) were met on Crozet soon after the Pleistocene/Holocene climatic transition. © 2014 The Authors Published by the Royal Society. All rights reserved.

Data di pubblicazione: 2014
Titolo: King penguin demography since the last glaciation inferred from genome-wide data
Autori: Trucchi, Emiliano; Gratton, Paolo; Whittington, Jason D.; Cristofari, Robin; Le Maho, Yvon; Chr Stenseth, Nils; Le Bohec, Céline
Rivista: PROCEEDINGS - ROYAL SOCIETY. BIOLOGICAL SCIENCES
Parole Chiave: Antarctica; Coalescence; Last Glacial Maximum; Restriction siteassociated DNA sequencing; Seabirds; Animals; Antarctic Regions; Avian Proteins; Indian Ocean Islands; Mitochondrial Proteins; Molecular Sequence Data; Polymerase Chain Reaction; Population Dynamics; Sequence Analysis, DNA; Spheniscidae; Climate Change; Genome; Genetics and Molecular Biology (all); Agricultural and Biological Sciences (all)
Abstract in inglese: How natural climate cycles, such as past glacial/interglacial patterns, have shaped species distributions at the high-latitude regions of the Southern Hemisphere is still largely unclear. Here, we show how the post-glacial warming following the Last Glacial Maximum (ca 18 000 years ago), allowed the (re)colonization of the fragmented sub-Antarctic habitat by an upperlevel marine predator, the king penguin Aptenodytes patagonicus. Using restriction site-associated DNA sequencing and standard mitochondrial data, we tested the behaviour of subsets of anonymous nuclear loci in inferring past demography through coalescent-based and allele frequency spectrum analyses. Our results show that the king penguin population breeding on Crozet archipelago steeply increased in size, closely following the Holocene warming recorded in the Epica Dome C ice core. The following population growth can be explained by a threshold model in which the ecological requirements of this species (year-round ice-free habitat for breeding and access to a major source of food such as the Antarctic Polar Front) were met on Crozet soon after the Pleistocene/Holocene climatic transition. © 2014 The Authors Published by the Royal Society. All rights reserved.
Digital Object Identifier (DOI): 10.1098/rspb.2014.0528
Handle: http://hdl.handle.net/11392/2382808
Appare nelle tipologie:03.1 Articolo su rivista

File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
 
 
 
Powered by IRIS-about IRIS-Utilizzo dei cookie
Logo CINECA  Copyright © 2022