Low to moderate levels of genetic differentiation detected across the distribution of the New Zealand abalone, Haliotis iris |
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Authors: | Margaret Will Marie L Hale David R Schiel and Neil J Gemmell |
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Institution: | (1) School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand;(2) Centre for Reproduction and Genomics, Department of Anatomy and Structural Biology, University of Otago, PO Box 913, Dunedin, New Zealand; |
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Abstract: | Two regions of the mitochondrial genome (cytochrome oxidase I and ATPase 8–ATPase 6) were used to examine the population genetic
structure of New Zealand’s endemic abalone (Haliotis iris). Samples were collected from 28 locations around New Zealand between January 2005 and February 2008. At least four phylogeographic
breaks were present and occurred across the Chatham rise, in the western Cook Strait region, along the southeast coast of
the South Island, and at East Cape in the North Island. Gene flow across the Chatham rise is probably limited due to infrequent
dispersal across large geographic distances (~850 km), while factors limiting gene flow around the North and South Islands
are less clear, and understanding these may require intense temporal and spatial sampling in complex hydrographic regions.
High genetic diversity and weak genetic structure may be a general feature of abalone potentially reflecting large and/or
ancient populations. |
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Keywords: | |
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