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Genetic Structure Among 50 Species of the Northeastern Pacific Rocky Intertidal Community

Comparing many species' population genetic patterns across the same seascape can identify species with different levels of structure, and suggest hypotheses about the processes that cause such variation for species in the same ecosystem. This comparative approach helps focus on geographic barri...

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Detalles Bibliográficos
Autores principales: Kelly, Ryan P., Palumbi, Stephen R.
Formato: Texto
Lenguaje:English
Publicado: Public Library of Science 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2799524/
https://www.ncbi.nlm.nih.gov/pubmed/20062807
http://dx.doi.org/10.1371/journal.pone.0008594
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author Kelly, Ryan P.
Palumbi, Stephen R.
author_facet Kelly, Ryan P.
Palumbi, Stephen R.
author_sort Kelly, Ryan P.
collection PubMed
description Comparing many species' population genetic patterns across the same seascape can identify species with different levels of structure, and suggest hypotheses about the processes that cause such variation for species in the same ecosystem. This comparative approach helps focus on geographic barriers and selective or demographic processes that define genetic connectivity on an ecosystem scale, the understanding of which is particularly important for large-scale management efforts. Moreover, a multispecies dataset has great statistical advantages over single-species studies, lending explanatory power in an effort to uncover the mechanisms driving population structure. Here, we analyze a 50-species dataset of Pacific nearshore invertebrates with the aim of discovering the most influential structuring factors along the Pacific coast of North America. We collected cytochrome c oxidase I (COI) mtDNA data from populations of 34 species of marine invertebrates sampled coarsely at four coastal locations in California, Oregon, and Alaska, and added published data from 16 additional species. All nine species with non-pelagic development have strong genetic structure. For the 41 species with pelagic development, 13 show significant genetic differentiation, nine of which show striking F(ST) levels of 0.1–0.6. Finer scale geographic investigations show unexpected regional patterns of genetic change near Cape Mendocino in northern California for five of the six species tested. The region between Oregon and Alaska is a second focus of intraspecific genetic change, showing differentiation in half the species tested. Across regions, strong genetic subdivision occurs more often than expected in mid-to-high intertidal species, a result that may reflect reduced gene flow due to natural selection along coastal environmental gradients. Finally, the results highlight the importance of making primary research accessible to policymakers, as unexpected barriers to marine dispersal break the coast into separate demographic zones that may require their own management plans.
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spelling pubmed-27995242010-01-09 Genetic Structure Among 50 Species of the Northeastern Pacific Rocky Intertidal Community Kelly, Ryan P. Palumbi, Stephen R. PLoS One Research Article Comparing many species' population genetic patterns across the same seascape can identify species with different levels of structure, and suggest hypotheses about the processes that cause such variation for species in the same ecosystem. This comparative approach helps focus on geographic barriers and selective or demographic processes that define genetic connectivity on an ecosystem scale, the understanding of which is particularly important for large-scale management efforts. Moreover, a multispecies dataset has great statistical advantages over single-species studies, lending explanatory power in an effort to uncover the mechanisms driving population structure. Here, we analyze a 50-species dataset of Pacific nearshore invertebrates with the aim of discovering the most influential structuring factors along the Pacific coast of North America. We collected cytochrome c oxidase I (COI) mtDNA data from populations of 34 species of marine invertebrates sampled coarsely at four coastal locations in California, Oregon, and Alaska, and added published data from 16 additional species. All nine species with non-pelagic development have strong genetic structure. For the 41 species with pelagic development, 13 show significant genetic differentiation, nine of which show striking F(ST) levels of 0.1–0.6. Finer scale geographic investigations show unexpected regional patterns of genetic change near Cape Mendocino in northern California for five of the six species tested. The region between Oregon and Alaska is a second focus of intraspecific genetic change, showing differentiation in half the species tested. Across regions, strong genetic subdivision occurs more often than expected in mid-to-high intertidal species, a result that may reflect reduced gene flow due to natural selection along coastal environmental gradients. Finally, the results highlight the importance of making primary research accessible to policymakers, as unexpected barriers to marine dispersal break the coast into separate demographic zones that may require their own management plans. Public Library of Science 2010-01-07 /pmc/articles/PMC2799524/ /pubmed/20062807 http://dx.doi.org/10.1371/journal.pone.0008594 Text en Kelly, Palumbi. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Kelly, Ryan P.
Palumbi, Stephen R.
Genetic Structure Among 50 Species of the Northeastern Pacific Rocky Intertidal Community
title Genetic Structure Among 50 Species of the Northeastern Pacific Rocky Intertidal Community
title_full Genetic Structure Among 50 Species of the Northeastern Pacific Rocky Intertidal Community
title_fullStr Genetic Structure Among 50 Species of the Northeastern Pacific Rocky Intertidal Community
title_full_unstemmed Genetic Structure Among 50 Species of the Northeastern Pacific Rocky Intertidal Community
title_short Genetic Structure Among 50 Species of the Northeastern Pacific Rocky Intertidal Community
title_sort genetic structure among 50 species of the northeastern pacific rocky intertidal community
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2799524/
https://www.ncbi.nlm.nih.gov/pubmed/20062807
http://dx.doi.org/10.1371/journal.pone.0008594
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