DOI: 10.5061/dryad.3pf37
title: Data from: Influences of past climatic changes on historical population structure and demography of a cosmopolitan marine predator, the common dolphin (genus Delphinus)

description: Climatic oscillations during the Pleistocene have greatly influenced the
 distribution and connectivity of many organisms, leading to extinctions
 but also generating biodiversity. While the effects of such changes have
 been extensively studied in the terrestrial environment, studies focusing
 on the marine realm are still scarce. Here we used sequence data from one
 mitochondrial and five nuclear loci to assess the potential influence of
 Pleistocene climatic changes on the phylogeography and demographic history
 of a cosmopolitan marine predator, the common dolphin (genus Delphinus).
 Population samples representing the three major morphotypes of Delphinus
 were obtained from ten oceanic regions. Our results suggest that
 short-beaked common dolphins are likely to have originated in the eastern
 Indo-Pacific Ocean during the Pleistocene and expanded into the Atlantic
 Ocean through the Indian Ocean. On the other hand, long-beaked common
 dolphins appear to have evolved more recently and independently in several
 oceans. Our results also suggest that short-beaked common dolphins had
 recurrent demographic expansions concomitant with changes in sea surface
 temperature during the Pleistocene and its associated increases in
 resource availability, which differed between the North Atlantic and
 Pacific Ocean basins. By proposing how past environmental changes had an
 effect on the demography and speciation of a widely distributed marine
 mammal, we highlight the impacts that climate change may have on the
 distribution and abundance of marine predators and its ecological
 consequences for marine ecosystems.
description: cytbNexus file containing
 haplotype sequences obtained for the mitochondrial cytochrome b gene from
 Delphinus delphis, Delphinus capensis and Delphinus tropicalis. Samples
 were collected from stranded or live animals using biopsies in the
 Atlantic, Pacific and Indian Oceans.chrna1Nexus file containing
 sequences obtained for CHRNA1 (cholinergic receptor nicotinic
 alpha-polypeptide 1) from Delphinus delphis, Delphinus capensis and
 Delphinus tropicalis. Samples were collected from stranded or live animals
 using biopsies in the Atlantic, Pacific and Indian
 Oceans.del12Nexus file containing
 sequences obtained for the anonymous locus Del_12 from Delphinus delphis,
 Delphinus capensis and Delphinus tropicalis. Samples were collected from
 stranded or live animals using biopsies in the Atlantic, Pacific and
 Indian Oceans.del15Nexus file containing
 sequences obtained for the anonymous locus Del_15 from Delphinus delphis,
 Delphinus capensis and Delphinus tropicalis. Samples were collected from
 stranded or live animals using biopsies in the Atlantic, Pacific and
 Indian Oceans.del17Nexus file containing
 sequences obtained for the anonymous locus Del_17 from Delphinus delphis,
 Delphinus capensis and Delphinus tropicalis. Samples were collected from
 stranded or live animals using biopsies in the Atlantic, Pacific and
 Indian Oceans.plpNexus file containing
 sequences obtained for PLP (proteolipid protein 1) from Delphinus delphis,
 Delphinus capensis and Delphinus tropicalis. Samples were collected from
 stranded or live animals using biopsies in the Atlantic, Pacific and
 Indian Oceans.GenBank Accession
 NumbersGenBank Accession
 Numbers for the sequences used in this study and their respective codes
 used in the nexus files.GenBankAccessionNumbers.xls