Population differentiation and hybridisation of Australian snubfin ( Orcaella heinsohni ) and Indo-Pacific humpback ( Sousa chinensis ) dolphins in North-Western Australia

Little is known about the Australian snubfin (Orcaella heinsohni) and Indo-Pacific humpback (Sousa chinensis) dolphins ('snubfin' and 'humpback dolphins', hereafter) of north-western Australia. While both species are listed as 'near threatened' by the IUCN, data deficie...

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Bibliographic Details
Published in:PLoS ONE
Main Authors: Brown, Alexander M., Kopps, Anna M., Allen, Simon J., Bejder, Lars, Littleford-Colquhoun, Bethan, Parra, Guido J., Cagnazzi, Daniele, Thiele, Deborah, Palmer, Carol, Frere, Celine H.
Format: Article in Journal/Newspaper
Language:English
Published: 2014
Subjects:
BOTTLE-NOSED DOLPHINS
MULTILOCUS GENOTYPE DATA
GENETIC DIFFERENTIATION
MITOCHONDRIAL-DNA
TURSIOPS-TRUNCATUS
LINKAGE DISEQUILIBRIUM
MICROSATELLITE MARKERS
BALAENOPTERA-MUSCULUS
PHOCOENA-PHOCOENA
IMPACT ASSESSMENT
Pacific
Roebuck
West Cape
Balaenoptera musculus
Phocoena phocoena
Online Access:https://hdl.handle.net/11370/b6f81a6f-36c4-4e1a-9ed4-794483d394f7
https://research.rug.nl/en/publications/b6f81a6f-36c4-4e1a-9ed4-794483d394f7
https://doi.org/10.1371/journal.pone.0101427
https://pure.rug.nl/ws/files/38236796/Brown_Kopps_et_al_2014.pdf
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Summary:Little is known about the Australian snubfin (Orcaella heinsohni) and Indo-Pacific humpback (Sousa chinensis) dolphins ('snubfin' and 'humpback dolphins', hereafter) of north-western Australia. While both species are listed as 'near threatened' by the IUCN, data deficiencies are impeding rigorous assessment of their conservation status across Australia. Understanding the genetic structure of populations, including levels of gene flow among populations, is important for the assessment of conservation status and the effective management of a species. Using nuclear and mitochondrial DNA markers, we assessed population genetic diversity and differentiation between snubfin dolphins from Cygnet (n = 32) and Roebuck Bays (n = 25), and humpback dolphins from the Dampier Archipelago (n = 19) and the North West Cape (n = 18). All sampling locations were separated by geographic distances >200 km. For each species, we found significant genetic differentiation between sampling locations based on 12 (for snubfin dolphins) and 13 (for humpback dolphins) microsatellite loci (F-ST = 0.05-0.09; P

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