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Genetic diversity and population structure of the size-selectively harvested owl limpet, Lottia gigantea

Genetic diversity and population structure of the size-selectively harvested owl limpet, Lottia gigantea
Genetic diversity and population structure of the size-selectively harvested owl limpet, Lottia gigantea
Size-selective harvesting can elicit a genetic response in target species through changes in population genetic subdivision, genetic diversity and selective regimes. While harvest-induced genetic change has been documented in some commercially important species through the use of historic samples, many commonly harvested species, such as coastal molluscs, lack historic samples and information on potential harvest induced genetic change. In this study, we have genotyped six microsatellite markers from populations across much of the California mainland range of the size-selectively harvested owl limpet (Lottia gigantea) to explore the genetic structure and diversity of this species. We found no significant genetic structure or differences in genetic diversity among populations of L. gigantea. Our results suggest high gene flow among populations and that differences in life history, demography, and body size previously observed between protected and exploited populations is largely due to phenotypic plasticity. From a conservation perspective, if proper actions are taken to curb harvesting, then exploited populations should be able to return to their pre-impact state given sufficient time.
Lottia gigantea, microsatellites, size-selective harvesting
0173-9565
574-583
Fenberg, Phillip B.
c73918cd-98cc-41e6-a18c-bf0de4f1ace8
Hellberg, Michael E.
da2fb3b9-556c-4943-9520-e19524a16aaa
Mullen, Lynne
e4ae689f-9c51-4b8a-a85b-dfb8781eb996
Roy, Kaustuv
a1a9a581-0508-4340-9065-a1cbc5a9a04e
Fenberg, Phillip B.
c73918cd-98cc-41e6-a18c-bf0de4f1ace8
Hellberg, Michael E.
da2fb3b9-556c-4943-9520-e19524a16aaa
Mullen, Lynne
e4ae689f-9c51-4b8a-a85b-dfb8781eb996
Roy, Kaustuv
a1a9a581-0508-4340-9065-a1cbc5a9a04e

Fenberg, Phillip B., Hellberg, Michael E., Mullen, Lynne and Roy, Kaustuv (2010) Genetic diversity and population structure of the size-selectively harvested owl limpet, Lottia gigantea. Marine Ecology, 31 (4), 574-583. (doi:10.1111/j.1439-0485.2010.00386.x).

Record type: Article

Abstract

Size-selective harvesting can elicit a genetic response in target species through changes in population genetic subdivision, genetic diversity and selective regimes. While harvest-induced genetic change has been documented in some commercially important species through the use of historic samples, many commonly harvested species, such as coastal molluscs, lack historic samples and information on potential harvest induced genetic change. In this study, we have genotyped six microsatellite markers from populations across much of the California mainland range of the size-selectively harvested owl limpet (Lottia gigantea) to explore the genetic structure and diversity of this species. We found no significant genetic structure or differences in genetic diversity among populations of L. gigantea. Our results suggest high gene flow among populations and that differences in life history, demography, and body size previously observed between protected and exploited populations is largely due to phenotypic plasticity. From a conservation perspective, if proper actions are taken to curb harvesting, then exploited populations should be able to return to their pre-impact state given sufficient time.

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Published date: December 2010
Keywords: Lottia gigantea, microsatellites, size-selective harvesting
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 358585
URI: http://eprints.soton.ac.uk/id/eprint/358585
ISSN: 0173-9565
PURE UUID: 9925bb69-f389-4cb5-a443-13e3ea445f09

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Date deposited: 08 Oct 2013 16:04
Last modified: 19 Jul 2019 21:25

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