Macquarie University
Browse

File(s) stored somewhere else

Please note: Linked content is NOT stored on Macquarie University and we can't guarantee its availability, quality, security or accept any liability.

Data from: Influences of past climatic changes on historical population structure and demography of a cosmopolitan marine predator, the common dolphin (genus Delphinus)

dataset
posted on 2022-06-10, 03:09 authored by Ana Amaral, Luciano Beheregaray, Kerstin Bilgmann, Luís Freitas, Kelly Robertson, Marina Sequeira, Karen Stockin, M. M. Coelho, Luciana Möller
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.

Usage Notes

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

History

FAIR Self Assessment Rating

  • Unassessed

Data Sensitivity

  • General

Source

Dryad

Usage metrics

    Macquarie University Research Data Repository

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC