Differential patterns of connectivity in Western Pacific hydrothermal vent metapopulations: A comparison of biophysical and genetic models

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dc.contributor.authorBreusing, Corinna
dc.contributor.authorJohnson, Shannon B.
dc.contributor.authorMitarai, Satoshi
dc.contributor.authorBeinart, Roxanne A.
dc.contributor.authorTunnicliffe, Verena
dc.date.accessioned2023-11-30T17:33:05Z
dc.date.available2023-11-30T17:33:05Z
dc.date.copyright2021en_US
dc.date.issued2021
dc.descriptionWe are grateful to the captains, crews and ROV pilots of the R/V Melville (ROV Jason II), the R/V Yokosuka (HOV Shinkai 6500), the R/V Sonne (ROV Kiel 6000) and the R/V Falkor (ROV Ropos) for facilitating the original sample collections. We also thank Bob Vrijenhoek for providing genetic specimen for analysis as well as the OIST Scientific Computing and Data Analysis Section for providing access to the Deigo HPC on which the biophysical modelling was performed.en_US
dc.description.abstractHydrothermal ecosystems face threats from planned deep-seabed mining activities, despite the fact that patterns of realized connectivity among vent-associated populations and communities are still poorly understood. Since populations of vent endemic species depend on larval dispersal to maintain connectivity and resilience to habitat changes, effective conservation strategies for hydrothermal ecosystems should include assessments of metapopulation dynamics. In this study, we combined population genetic methods with biophysical models to assess strength and direction of gene flow within four species of the genus Alviniconcha (A. boucheti, A. kojimai, A. strummeri and A. hessleri) that are ecologically dominant taxa at Western Pacific hydrothermal vents. In contrast to predictions from dispersal models, among-basin migration in A. boucheti occurred predominantly in an eastward direction, while populations within the North Fiji Basin were clearly structured despite the absence of oceanographic barriers. Dispersal models and genetic data were largely in agreement for the other Alviniconcha species, suggesting limited between-basin migration for A. kojimai, lack of genetic structure in A. strummeri within the Lau Basin and restricted gene flow between northern and southern A. hessleri populations in the Mariana back-arc as a result of oceanic current conditions. Our findings show that gene flow patterns in ecologically similar congeneric species can be remarkably different and surprisingly limited depending on environmental and evolutionary contexts. These results are relevant to regional conservation planning and to considerations of similar integrated analyses for any vent metapopulations under threat from seabed mining.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis work was supported through grants of the Natural Sciences and Engineering Research Council of Canada and the National Geographic Society (to V.T.), the David and Lucile Packard Foundation (to MBARI) and the National Science Foundation (grant numbers OCE-1536331, OCE-1819530 and OCE-1736932 to R.A.B., OCE-9910799 and OCE-0241613 to Bob Vrijenhoek, MBARI).en_US
dc.identifier.citationBreusing, C., Johnson, S. B., Mitarai, S., Beinart, R. A., & Tunnicliffe, V. (2021). Differential patterns of connectivity in Western Pacific hydrothermal vent metapopulations: A comparison of biophysical and genetic models. Evolutionary Applications, 16(1), 22-35. https://doi.org/10.1111/eva.13326en_US
dc.identifier.urihttps://doi.org/10.1111/eva.13326
dc.identifier.urihttp://hdl.handle.net/1828/15658
dc.language.isoenen_US
dc.publisherEvolutionary Applicationsen_US
dc.subjectbiophysical modellingen_US
dc.subjectdeep-seabed miningen_US
dc.subjectgene flowen_US
dc.subjecthydrothermal ventsen_US
dc.subjectmeta-population connectivityen_US
dc.titleDifferential patterns of connectivity in Western Pacific hydrothermal vent metapopulations: A comparison of biophysical and genetic modelsen_US
dc.typeArticleen_US

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