PMID: 16641519Apr 28, 2006Paper

Migration, isolation, and speciation of hydrothermal vent limpets (Gastropoda; Lepetodrilidae) across the Blanco Transform Fault

The Biological Bulletin
Shannon B JohnsonRobert C Vrijenhoek

Abstract

The Sovanco Fracture Zone and Blanco Transform Fault separate the Explorer, Juan de Fuca, and Gorda ridge systems of the northeastern Pacific Ocean. To test whether such offsets in the ridge axis create barriers to along-axis dispersal of the endemic hydrothermal vent animals, we examined the genetic structure of limpet populations previously identified as Lepetodrilus fucensis McLean, 1988 (Gastropoda, Lepetodrilidae). Mitochondrial DNA sequences and patterns of allozyme variation revealed no evidence that the 150-km-long Sovanco Fracture Zone impeded gene flow between the Explorer and Juan de Fuca populations. In contrast, the 450-km-long Blanco Transform Fault separates the limpets into highly divergent northern and southern lineages that we recognize as distinct species. We describe southern populations from the Gorda Ridge (Seacliff) and Escanaba Trough as Lepetodrilus gordensis new species and refer northern populations from the Explorer and Juan de Fuca ridge systems to L. fucensis sensu stricto. The species are similar morphologically, but L. gordensis lacks a sensory neck papilla and has a more tightly coiled teleconch. To assess the degree of isolation between these closely related species, we used the Isolation with ...Continue Reading

Citations

May 21, 2010·Nature·Jane Qiu
Mar 20, 2010·Evolution; International Journal of Organic Evolution·Asta Audzijonyte, Robert C Vrijenhoek
Apr 15, 2011·BMC Evolutionary Biology·D Katharine CoykendallRobert C Vrijenhoek
Apr 14, 2010·Proceedings of the National Academy of Sciences of the United States of America·Lauren S MullineauxStace E Beaulieu
Nov 12, 2009·BMC Biology·Robert C VrijenhoekGreg W Rouse
Jun 7, 2012·Integrative and Comparative Biology·Craig M YoungMary E Rice
Sep 13, 2013·Proceedings. Biological Sciences·Elizabeth BordaGreg W Rouse
May 25, 2012·Conservation Biology : the Journal of the Society for Conservation Biology·Janet R VoightAmanda E Bates
Jul 30, 2010·Proceedings. Biological Sciences·Craig R McClain, Sarah Mincks Hardy
Mar 2, 2016·Proceedings of the National Academy of Sciences of the United States of America·Satoshi MitaraiJames C McWilliams
Jan 26, 2013·BMC Evolutionary Biology·Shannon B JohnsonRobert C Vrijenhoek

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