A Matter of Scale: Population Genomic Structure and Connectivity of Fisheries At-Risk Common Dolphins (Delphinus delphis) From Australasia

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dc.citation.volume8
dc.contributor.authorBarceló A
dc.contributor.authorSandoval-Castillo J
dc.contributor.authorStockin KA
dc.contributor.authorBilgmann K
dc.contributor.authorAttard CRM
dc.contributor.authorZanardo N
dc.contributor.authorParra GJ
dc.contributor.authorHupman K
dc.contributor.authorReeves IM
dc.contributor.authorBetty EL
dc.contributor.authorTezanos-Pinto G
dc.contributor.authorBeheregaray LB
dc.contributor.authorMöller LM
dc.contributor.editorJensen MP
dc.date.accessioned2024-02-01T00:17:29Z
dc.date.accessioned2024-07-25T06:53:19Z
dc.date.available2021-02-16
dc.date.available2024-02-01T00:17:29Z
dc.date.available2024-07-25T06:53:19Z
dc.date.issued2021-02-16
dc.description.abstractAn understanding of population structure and connectivity at multiple spatial scales is required to assist wildlife conservation and management. This is particularly critical for widely distributed and highly mobile marine mammals subject to fisheries by-catch. Here, we present a population genomic assessment of a near-top predator, the common dolphin (Delphinus delphis), which is incidentally caught in multiple fisheries across the Australasian region. The study was carried out using 14,799 ddRAD sequenced genome-wide markers genotyped for 478 individuals sampled at multiple spatial scales across Australasia. A complex hierarchical metapopulation structure was identified, with three highly distinct and genetically diverse regional populations at large spatial scales (>1,500 km). The populations inhabit the southern coast of Australia, the eastern coast of Australia, New Zealand, and Tasmania, with the latter also showing a considerable level of admixture to Australia's east coast. Each of these regional populations contained two to four nested local populations (i.e., subpopulations) at finer spatial scales, with most of the gene flow occurring within distances of 50 to 400 km. Estimates of contemporary migration rates between adjacent subpopulations ranged from 6 to 25%. Overall, our findings identified complex common dolphin population structure and connectivity across state and international jurisdictions, including migration and gene flow across the Tasman Sea. The results indicate that inter-jurisdictional collaboration is required to implement conservation management strategies and mitigate fisheries interactions of common dolphins across multiple spatial scales in the Australasian region.
dc.description.confidentialfalse
dc.identifier.author-urlhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000625191000001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationBarceló A, Sandoval-Castillo J, Stockin KA, Bilgmann K, Attard CRM, Zanardo N, Parra GJ, Hupman K, Reeves IM, Betty EL, Tezanos-Pinto G, Beheregaray LB, Möller LM. (2021). A Matter of Scale: Population Genomic Structure and Connectivity of Fisheries At-Risk Common Dolphins (Delphinus delphis) From Australasia. Frontiers in Marine Science. 8.
dc.identifier.doi10.3389/fmars.2021.616673
dc.identifier.eissn2296-7745
dc.identifier.elements-typejournal-article
dc.identifier.numberARTN 616673
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/71102
dc.languageEnglish
dc.publisherFrontiers Media S.A.
dc.publisher.urihttps://www.frontiersin.org/articles/10.3389/fmars.2021.616673/full
dc.relation.isPartOfFrontiers in Marine Science
dc.rights(c) 2021 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectdelphinids
dc.subjectfisheries genomics
dc.subjectisolation-by-distance
dc.subjectmigration
dc.subjectgene flow
dc.subjectmetapopulation
dc.subjectconservation genomics
dc.titleA Matter of Scale: Population Genomic Structure and Connectivity of Fisheries At-Risk Common Dolphins (Delphinus delphis) From Australasia
dc.typeJournal article
pubs.elements-id441845
pubs.organisational-groupOther
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