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Data from: Connectivity in the cold: the comparative population genetics of vent-endemic fauna in the Scotia Sea, Southern Ocean.

Data from: Connectivity in the cold: the comparative population genetics of vent-endemic fauna in the Scotia Sea, Southern Ocean.
Data from: Connectivity in the cold: the comparative population genetics of vent-endemic fauna in the Scotia Sea, Southern Ocean.
We report the first comparative population genetics study for vent fauna in the Southern Ocean using cytochrome C oxidase I and microsatellite markers. Three species are examined: the kiwaid squat lobster, Kiwa tyleri, the peltospirid gastropod Gigantopelta chessoia and a lepetodrilid limpet, Lepetodrilus sp. collected from vent fields 440 km apart on the East Scotia Ridge (ESR) and from the Kemp Caldera on the South Sandwich Island Arc, ~95 km eastwards. We report no differentiation for all species across the ESR, consistent with panmixia or recent range expansions. A lack of differentiation is notable for Kiwa tyleri, which exhibits extremely abbreviated lecithotrophic larval development, suggestive of a very limited dispersal range. Larval lifespans may, however, be extended by low temperature-induced metabolic rate reduction in the Southern Ocean, muting the impact of dispersal strategy on patterns of population structure. COI diversity patterns suggest all species experienced demographic bottlenecks or selective sweeps in the past million years and possibly at different times. ESR and Kemp limpets are divergent, although with evidence of very recent ESR-Kemp immigration. Their divergence, possibility indicative of incipient speciation, along with the absence of the other two species at Kemp, may be the consequence of differing dispersal capabilities across a ~1000 m depth range and/or different selective regimes between the two areas. Estimates of historic and recent limpet gene flow between the ESR and Kemp are consistent with predominantly easterly currents in the region and potentially therefore, cross-axis currents on the ESR, with biogeographic implications for the region.,Zip file of input filesIncludes fasta sequence files, microsatellite genotype files, as well as other input filesData_accessibility.zip,
DRYAD
Roterman, Christopher N.
879794d9-4d9d-4b36-b199-87fdbb50fbce
Copley, Jon T.
5f30e2a6-76c1-4150-9a42-dcfb8f5788ef
Linse, Katrin T.
bb514b93-a995-4eff-8ce9-247b1557ada8
Tyler, Paul A.
d1965388-38cc-4c1d-9217-d59dba4dd7f8
Rogers, Alex D.
fb474198-f059-48f7-b637-74617b5023f6
Roterman, Christopher N.
879794d9-4d9d-4b36-b199-87fdbb50fbce
Copley, Jon T.
5f30e2a6-76c1-4150-9a42-dcfb8f5788ef
Linse, Katrin T.
bb514b93-a995-4eff-8ce9-247b1557ada8
Tyler, Paul A.
d1965388-38cc-4c1d-9217-d59dba4dd7f8
Rogers, Alex D.
fb474198-f059-48f7-b637-74617b5023f6

Roterman, Christopher N., Linse, Katrin T. and Rogers, Alex D. (2015) Data from: Connectivity in the cold: the comparative population genetics of vent-endemic fauna in the Scotia Sea, Southern Ocean. DRYAD doi:10.5061/dryad.b42vd [Dataset]

Record type: Dataset

Abstract

We report the first comparative population genetics study for vent fauna in the Southern Ocean using cytochrome C oxidase I and microsatellite markers. Three species are examined: the kiwaid squat lobster, Kiwa tyleri, the peltospirid gastropod Gigantopelta chessoia and a lepetodrilid limpet, Lepetodrilus sp. collected from vent fields 440 km apart on the East Scotia Ridge (ESR) and from the Kemp Caldera on the South Sandwich Island Arc, ~95 km eastwards. We report no differentiation for all species across the ESR, consistent with panmixia or recent range expansions. A lack of differentiation is notable for Kiwa tyleri, which exhibits extremely abbreviated lecithotrophic larval development, suggestive of a very limited dispersal range. Larval lifespans may, however, be extended by low temperature-induced metabolic rate reduction in the Southern Ocean, muting the impact of dispersal strategy on patterns of population structure. COI diversity patterns suggest all species experienced demographic bottlenecks or selective sweeps in the past million years and possibly at different times. ESR and Kemp limpets are divergent, although with evidence of very recent ESR-Kemp immigration. Their divergence, possibility indicative of incipient speciation, along with the absence of the other two species at Kemp, may be the consequence of differing dispersal capabilities across a ~1000 m depth range and/or different selective regimes between the two areas. Estimates of historic and recent limpet gene flow between the ESR and Kemp are consistent with predominantly easterly currents in the region and potentially therefore, cross-axis currents on the ESR, with biogeographic implications for the region.,Zip file of input filesIncludes fasta sequence files, microsatellite genotype files, as well as other input filesData_accessibility.zip,

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More information

Published date: 1 January 2015

Identifiers

Local EPrints ID: 448662
URI: http://eprints.soton.ac.uk/id/eprint/448662
PURE UUID: a195c523-b130-4ee0-9f69-499199c673d5
ORCID for Jon T. Copley: ORCID iD orcid.org/0000-0003-3333-4325

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Date deposited: 29 Apr 2021 16:32
Last modified: 22 Feb 2022 02:33

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Contributors

Creator: Christopher N. Roterman
Contributor: Jon T. Copley ORCID iD
Creator: Katrin T. Linse
Contributor: Paul A. Tyler
Creator: Alex D. Rogers

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