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Data from: Contrasting genetic structure of sympatric congeneric gastropods: do differences in habitat preference, abundance, and distribution matter?

Data from: Contrasting genetic structure of sympatric congeneric gastropods: do differences in habitat preference, abundance, and distribution matter?
Data from: Contrasting genetic structure of sympatric congeneric gastropods: do differences in habitat preference, abundance, and distribution matter?
Aim: The relationship of population genetics with the ecology and biogeography of species may be explored by comparing phenotypically similar but ecologically different congeners with overlapping ranges. We compared genetic differentiation between two congeneric rocky intertidal gastropods across a major portion of their sympatric range. We hypothesized that the habitat generalist with high abundance and continuous distribution would exhibit comparatively less genetic differentiation than the habitat specialist with low abundance and a fragmented distribution. Location: Northeast Atlantic from the northwest Iberian Peninsula to southern British coastline. Taxon: Gastropoda, Trochidae, Steromphala (formerly Gibbula) Methods: Field surveys were conducted to assess presence/absence and abundance of Steromphala umbilicalis (generalist) and S. pennanti (specialist) at 23 localities along ~1800 km coastline. We isolated polymorphic microsatellite markers for both species (seven loci for S. umbilicalis and eight for S. pennanti) and used these to genotype 187 S. umbilicalis and 157 S. pennanti individuals. We used standard population genetic analyses to compare patterns of genetic differentiation between species in relation to the field surveys. Results: Steromphala pennanti showed a more fragmented distribution, significantly lower abundance, and greater genetic differentiation than S. umbilicalis. One S. umbilicalis population towards the north of the range (southern Britain) was genetically distinct from all other sampled populations. Steromphala pennanti showed greater genetic differentiation between three southern localities, which may be attributable to its fragmented distribution and lower abundance because of limited availability of its preferred fucoid habitat in this region. We also suggest that oceanographic currents could be associated with regional genetic structure. Main conclusions: The habitat generalist showed high local abundances, continuous distribution and low regional genetic differentiation across much of its range. We found the opposite pattern for the habitat specialist. Our study highlights the importance of considering ecological (e.g. abundance, habitat preferences) and abiotic variables (e.g. ocean currents and temperature) for understanding differences in genetic structure of sympatrically distributed congeners.,Steromphala pennanti microsatellitesFragment sizes of different microsatellite markers for Steromphala pennanti DNA samples. Column one gives the individual (P=Point du Chay, SJ=St Jean de Luz, LOC=Loctudy, V=Vilagarcia, H=Cap de la Hague, SV=San Vicente de la Barquera); other columns give marker names. Absent data is represented by "-1".S_pennanti_msats.csvSteromphala umbilicalis microsatellitesFragment sizes of different microsatellite markers for Steromphala umbilicalis DNA samples. Column one gives the individual (B=Biarritz, C=Cap de Carteret, LOC=Loctudy, LP=Les Pierrieres, S=San Vicente de la Barquera, SW=Swanage, V=Vilagarcia); other columns give marker names. Absent data is represented by "-1".S_umbilicalis_msats.xlsxAbundance of S. umbilicalis and S. pennantiDifferent localities' (column 1) timed search (individuals/minute) abundance estimates of Steromphala umbilicalis (column two) and Steromphala pennanti (column 3). Localities north of the habitat gap labelled "1" in column 4, south of the habitat gap labelled "2".timesearch_abundances.csv,
DRYAD
Wort, Edward J.G.
db985ea8-16f4-416f-97cb-6a0fcbd0a8be
Chapman, Mark A.
8bac4a92-bfa7-4c3c-af29-9af852ef6383
Hawkins, Stephen John
758fe1c1-30cd-4ed1-bb65-2471dc7c11fa
Henshall, Lucy
d3ee4f86-421d-47f0-8158-8380d1a72cb0
Pita, Alfonso
3941a65e-d445-4cd0-9ead-f203fc984bae
Rius, Marc
c4e88345-4b4e-4428-b4b2-37229155f68d
Williams, Suzanne T.
9c6cd5c1-adbd-41a7-9f56-752d363f8702
Fenberg, Phillip B.
c73918cd-98cc-41e6-a18c-bf0de4f1ace8
Wort, Edward J.G.
db985ea8-16f4-416f-97cb-6a0fcbd0a8be
Chapman, Mark A.
8bac4a92-bfa7-4c3c-af29-9af852ef6383
Hawkins, Stephen John
758fe1c1-30cd-4ed1-bb65-2471dc7c11fa
Henshall, Lucy
d3ee4f86-421d-47f0-8158-8380d1a72cb0
Pita, Alfonso
3941a65e-d445-4cd0-9ead-f203fc984bae
Rius, Marc
c4e88345-4b4e-4428-b4b2-37229155f68d
Williams, Suzanne T.
9c6cd5c1-adbd-41a7-9f56-752d363f8702
Fenberg, Phillip B.
c73918cd-98cc-41e6-a18c-bf0de4f1ace8

Henshall, Lucy, Pita, Alfonso and Williams, Suzanne T. (2019) Data from: Contrasting genetic structure of sympatric congeneric gastropods: do differences in habitat preference, abundance, and distribution matter? DRYAD doi:10.5061/dryad.t4kv200 [Dataset]

Record type: Dataset

Abstract

Aim: The relationship of population genetics with the ecology and biogeography of species may be explored by comparing phenotypically similar but ecologically different congeners with overlapping ranges. We compared genetic differentiation between two congeneric rocky intertidal gastropods across a major portion of their sympatric range. We hypothesized that the habitat generalist with high abundance and continuous distribution would exhibit comparatively less genetic differentiation than the habitat specialist with low abundance and a fragmented distribution. Location: Northeast Atlantic from the northwest Iberian Peninsula to southern British coastline. Taxon: Gastropoda, Trochidae, Steromphala (formerly Gibbula) Methods: Field surveys were conducted to assess presence/absence and abundance of Steromphala umbilicalis (generalist) and S. pennanti (specialist) at 23 localities along ~1800 km coastline. We isolated polymorphic microsatellite markers for both species (seven loci for S. umbilicalis and eight for S. pennanti) and used these to genotype 187 S. umbilicalis and 157 S. pennanti individuals. We used standard population genetic analyses to compare patterns of genetic differentiation between species in relation to the field surveys. Results: Steromphala pennanti showed a more fragmented distribution, significantly lower abundance, and greater genetic differentiation than S. umbilicalis. One S. umbilicalis population towards the north of the range (southern Britain) was genetically distinct from all other sampled populations. Steromphala pennanti showed greater genetic differentiation between three southern localities, which may be attributable to its fragmented distribution and lower abundance because of limited availability of its preferred fucoid habitat in this region. We also suggest that oceanographic currents could be associated with regional genetic structure. Main conclusions: The habitat generalist showed high local abundances, continuous distribution and low regional genetic differentiation across much of its range. We found the opposite pattern for the habitat specialist. Our study highlights the importance of considering ecological (e.g. abundance, habitat preferences) and abiotic variables (e.g. ocean currents and temperature) for understanding differences in genetic structure of sympatrically distributed congeners.,Steromphala pennanti microsatellitesFragment sizes of different microsatellite markers for Steromphala pennanti DNA samples. Column one gives the individual (P=Point du Chay, SJ=St Jean de Luz, LOC=Loctudy, V=Vilagarcia, H=Cap de la Hague, SV=San Vicente de la Barquera); other columns give marker names. Absent data is represented by "-1".S_pennanti_msats.csvSteromphala umbilicalis microsatellitesFragment sizes of different microsatellite markers for Steromphala umbilicalis DNA samples. Column one gives the individual (B=Biarritz, C=Cap de Carteret, LOC=Loctudy, LP=Les Pierrieres, S=San Vicente de la Barquera, SW=Swanage, V=Vilagarcia); other columns give marker names. Absent data is represented by "-1".S_umbilicalis_msats.xlsxAbundance of S. umbilicalis and S. pennantiDifferent localities' (column 1) timed search (individuals/minute) abundance estimates of Steromphala umbilicalis (column two) and Steromphala pennanti (column 3). Localities north of the habitat gap labelled "1" in column 4, south of the habitat gap labelled "2".timesearch_abundances.csv,

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Published date: 1 January 2019

Identifiers

Local EPrints ID: 448489
URI: http://eprints.soton.ac.uk/id/eprint/448489
PURE UUID: feb7d5ac-8729-458a-8721-8dca96d4e12a
ORCID for Mark A. Chapman: ORCID iD orcid.org/0000-0002-7151-723X

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Date deposited: 23 Apr 2021 16:30
Last modified: 24 Apr 2021 01:43

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Contributors

Contributor: Edward J.G. Wort
Contributor: Mark A. Chapman ORCID iD
Contributor: Stephen John Hawkins
Creator: Lucy Henshall
Creator: Alfonso Pita
Contributor: Marc Rius
Creator: Suzanne T. Williams
Contributor: Phillip B. Fenberg

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