New Zealand triplefin fishes (family Tripterygiidae): contrasting population structure and mtDNA diversity within a marine species flock

Show simple item record Hickey, Anthony en Lavery, Shane en Hannan, DA en Baker, Charles en Clements, Kendall en 2012-03-09T01:49:38Z en 2009 en
dc.identifier.citation MOL ECOL 18(4):680-696 Feb 2009 en
dc.identifier.issn 0962-1083 en
dc.identifier.uri en
dc.description.abstract Triplefin fishes (Family Tripterygiidae) dominate the New Zealand temperate coastal fish fauna in diversity (26 endemic species, 14 genera). Most species appear to have evolved as a local radiation and mostly occupy sympatric distributions throughout New Zealand. To investigate the forces driving current gene-flow patterns and past evolutionary histories, we searched for common patterns of population genetic subdivision within eight species sampled throughout their distributions [mitchochondrial DNA (mtDNA) control region, n = 1086]. We hypothesised that common phylogeographical and population differentiation patterns would reveal past or ongoing physical processes, with differences reflecting stochastic or species-specific processes. Striking differences between species were apparent, with strong phylogeographical structure detected in Grahamina capito and the estuarine species G. nigripenne. G. capito fell into three distinct geographically restricted lineages. G. nigripenne largely separated into northern and southern lineages (ΦST 0.834). Strong population structuring and isolation by distance was evident in Bellapiscis medius, B. lesleyae and Forsterygion lapillum (ΦST 0.686, 0.436 and 0.115, respectively). High gene flow was apparent in G. gymnota and Ruanoho whero, and F. varium. However, for the latter species, isolation was apparent with samples collected from the offshore Three Kings Islands. Overall, a strong relationship was found between habitat depth and population structure among species, and species inhabiting shallower water habitats showed lower genetic diversity with higher levels of population subdivision. High-latitude populations generally showed low haplotype and nucleotide diversity. These data suggest that processes resulting from intraspecific differences in habitat preference, climatic histories and/or larval ecologies have subdivided populations of shallow water triplefin species. en
dc.publisher Blackwell en
dc.relation.ispartofseries Molecular Ecology en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from en
dc.rights.uri en
dc.title New Zealand triplefin fishes (family Tripterygiidae): contrasting population structure and mtDNA diversity within a marine species flock en
dc.type Journal Article en
dc.identifier.doi 10.1111/j.1365-294X.2008.04052.x en
pubs.issue 4 en
pubs.begin-page 680 en
pubs.volume 18 en
dc.rights.holder Copyright: Blackwell Publishing en
dc.identifier.pmid 19215584 en
pubs.end-page 696 en
dc.rights.accessrights en
pubs.subtype Article en
pubs.elements-id 95405 en Science en Biological Sciences en Science Research en Maurice Wilkins Centre (2010-2014) en
pubs.record-created-at-source-date 2010-09-01 en
pubs.dimensions-id 19215584 en

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