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Conflicting estimates of connectivity among deep-sea coral populations


Miller, KJ and Williams, A and Rowden, AA and Knowles, CL and Dunshea, GJ, Conflicting estimates of connectivity among deep-sea coral populations, Marine Ecology, 31, (Suppl. 1) pp. 144-157. ISSN 0173-9565 (2010) [Refereed Article]

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DOI: doi:10.1111/j.1439-0485.2010.00380.x


Genetic data were used as an indirect means of assessing connectivity among deep-sea coral populations on seamounts and slopes in the Australian and New Zealand region. We sequenced three DNA regions (16S, ITS and Control Region) in nine deep-sea coral species from sites spanning thousands of kilometers. Based on haplotype distributions and AMOVA, we found evidence of genetic subdivision across ocean expanses for three species: the scleractinian Desmophyllum dianthus, and the antipatharians Antipathes robillardi and Stichopathes variabilis. Levels of genetic variation were low for the remaining species, including the reef-forming Solenosmila variablis and Madrepora oculata, and more sensitive molecular markers may be needed to resolve their spatial structure properly. For two species (the scleractinian Stephanocyathus spiniger and the antipatharian Stichopathes filiformis), we found no evidence of genetic subdivision among sites within regions, suggesting sufficient gene flow occurs to maintain genetic homogeneity at scales of tens to hundreds of kilometers. Recognising that some seamount regions and coral populations are, or are not, effectively isolated will be a key component of successful management planning based on marine protected area networks – both within and beyond national jurisdictions.

Item Details

Item Type:Refereed Article
Keywords:Connectivity; conservation; coral; deep-sea; DNA; genetics; larval dispersal; seamounts.
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and estuarine ecology (incl. marine ichthyology)
Objective Division:Environmental Management
Objective Group:Marine systems and management
Objective Field:Marine biodiversity
UTAS Author:Miller, KJ (Dr Karen Miller)
UTAS Author:Knowles, CL (Dr Claire Knowles)
UTAS Author:Dunshea, GJ (Mr Glenn Dunshea)
ID Code:66145
Year Published:2010
Web of Science® Times Cited:52
Deposited By:IMAS Research and Education Centre
Deposited On:2011-01-05
Last Modified:2011-05-10
Downloads:1 View Download Statistics

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