High connectivity and lack of mtDNA differentiation among two previously recognized spiny lobster species in the southern Atlantic and Indian Oceans

Simple item page
dc.contributor.authorGroeneveld J.C.
dc.contributor.authorvon der Heyden S.
dc.contributor.authorMatthee C.A.
dc.date.accessioned2012-07-05T08:01:49Z
dc.date.available2012-07-05T08:01:49Z
dc.date.issued2012
dc.description.abstractAdult spiny lobsters Jasus paulensis and J. tristani inhabit non-emergent seamounts and remote islands in the southern mid-latitude (30-45°S) Indian and Atlantic Oceans. Populations are often thousands of kilometres apart, and metapopulation genetic structure relies on successful exchange of long-lived drifting larvae. Genetic population structure and connectivity were investigated by sequencing the mitochondrial cytochrome oxidase I gene from lobsters collected at two Indian Ocean sites (Seamount 150 and St Paul/Amsterdam Islands) and two Atlantic sites (Vema Seamount and Gough/Inaccessible Islands) between 2006 and 2011. Jasus paulensis and J. tristani individuals share identical haplotypes across the distribution range and Bayesian phylogenetic analyses strongly support the monophyly of all individuals sampled, to the exclusion of all other recognized Jasus species. Analyses of molecular variance revealed no significant population genetic differentiation between sites, and Fu's F s and a mismatch distribution suggested demographic expansion, which was estimated to have occurred between 14,000 and 118,000 years ago. The results show an apparent lack of barriers to dispersal and gene flow over thousands of kilometres of the southern Indian and Atlantic Oceans, and suggest that J. paulensis and J. tristani should be synonymized as J. paulensis (Heller, 1862). © 2012 Copyright Taylor and Francis Group, LLC.
dc.identifier.citationMarine Biology Research
dc.identifier.citation8
dc.identifier.citation8
dc.identifier.citation764
dc.identifier.citation770
dc.identifier.issn17451000
dc.identifier.otherdoi:10.1080/17451000.2012.676185
dc.identifier.urihttp://hdl.handle.net/10019.1/21575
dc.subjectdemographic expansion
dc.subjectgene flow
dc.subjectlarval dispersal
dc.subjectmitochondrial DNA
dc.subjectseamounts
dc.subjectSpiny lobster
dc.titleHigh connectivity and lack of mtDNA differentiation among two previously recognized spiny lobster species in the southern Atlantic and Indian Oceans
dc.typeArticle
Files
Collections
Stellenbosch University - Scopus Publications