The evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk **Nucella lapillus **
Abstract: Two ecotypes of Nucella lapillus can occur allopatrically or sympatrically, according to different degrees of wave exposure and microhabitats, on rocky shores of NW Spain. We studied differences in shell size and shape in adults and families of shelled embryos captured in the wild, and mol...
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Language: | English |
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2009
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Online Access: | https://hdl.handle.net/10067/729570151162165141 |
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ftunivantwerpen:c:irua:72957 2024-09-30T14:46:20+00:00 The evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk **Nucella lapillus ** Guerra-Varela, Jorge Colson, Isabelle Backeljau, Thierry Breugelmans, K. Hughes, Roger N. Rolán-Alvarez, Emilio 2009 pdf https://hdl.handle.net/10067/729570151162165141 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1007/S10682-007-9221-5 info:eu-repo/semantics/altIdentifier/isi/000263362600007 info:eu-repo/semantics/closedAccess 0269-7653 Evolutionary ecology Biology info:eu-repo/semantics/article 2009 ftunivantwerpen https://doi.org/10.1007/S10682-007-9221-5 2024-09-10T04:06:32Z Abstract: Two ecotypes of Nucella lapillus can occur allopatrically or sympatrically, according to different degrees of wave exposure and microhabitats, on rocky shores of NW Spain. We studied differences in shell size and shape in adults and families of shelled embryos captured in the wild, and molecular variation at 9 microsatellite loci and 4 mtDNA regions. Both adults and shelled embryos of the two ecotypes showed significant differences in size and shell-shape components (the most important being size of the shell aperture). Strong among-family variation suggests that shell-shape variation has an important genetic component, and the pattern of genetic differentiation was in agreement with traits being affected by divergent natural selection. No significant overall molecular differentiation was observed between the two ecotypes for mtDNA, although we found significant genetic structure at two microsatellite loci. Microsatellite differentiation between ecotypes at these two loci was larger in sympatry than in allopatry. These results and the comparison of tenacity suggest that the two forms are distinctly adapted to differences in shore level and degree of exposure to wave action. Article in Journal/Newspaper Dogwhelk Nucella lapillus IRUA - Institutional Repository van de Universiteit Antwerpen Evolutionary Ecology 23 2 261 280 |
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Open Polar |
collection |
IRUA - Institutional Repository van de Universiteit Antwerpen |
op_collection_id |
ftunivantwerpen |
language |
English |
topic |
Biology |
spellingShingle |
Biology Guerra-Varela, Jorge Colson, Isabelle Backeljau, Thierry Breugelmans, K. Hughes, Roger N. Rolán-Alvarez, Emilio The evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk **Nucella lapillus ** |
topic_facet |
Biology |
description |
Abstract: Two ecotypes of Nucella lapillus can occur allopatrically or sympatrically, according to different degrees of wave exposure and microhabitats, on rocky shores of NW Spain. We studied differences in shell size and shape in adults and families of shelled embryos captured in the wild, and molecular variation at 9 microsatellite loci and 4 mtDNA regions. Both adults and shelled embryos of the two ecotypes showed significant differences in size and shell-shape components (the most important being size of the shell aperture). Strong among-family variation suggests that shell-shape variation has an important genetic component, and the pattern of genetic differentiation was in agreement with traits being affected by divergent natural selection. No significant overall molecular differentiation was observed between the two ecotypes for mtDNA, although we found significant genetic structure at two microsatellite loci. Microsatellite differentiation between ecotypes at these two loci was larger in sympatry than in allopatry. These results and the comparison of tenacity suggest that the two forms are distinctly adapted to differences in shore level and degree of exposure to wave action. |
format |
Article in Journal/Newspaper |
author |
Guerra-Varela, Jorge Colson, Isabelle Backeljau, Thierry Breugelmans, K. Hughes, Roger N. Rolán-Alvarez, Emilio |
author_facet |
Guerra-Varela, Jorge Colson, Isabelle Backeljau, Thierry Breugelmans, K. Hughes, Roger N. Rolán-Alvarez, Emilio |
author_sort |
Guerra-Varela, Jorge |
title |
The evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk **Nucella lapillus ** |
title_short |
The evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk **Nucella lapillus ** |
title_full |
The evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk **Nucella lapillus ** |
title_fullStr |
The evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk **Nucella lapillus ** |
title_full_unstemmed |
The evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk **Nucella lapillus ** |
title_sort |
evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk **nucella lapillus ** |
publishDate |
2009 |
url |
https://hdl.handle.net/10067/729570151162165141 |
genre |
Dogwhelk Nucella lapillus |
genre_facet |
Dogwhelk Nucella lapillus |
op_source |
0269-7653 Evolutionary ecology |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/S10682-007-9221-5 info:eu-repo/semantics/altIdentifier/isi/000263362600007 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/S10682-007-9221-5 |
container_title |
Evolutionary Ecology |
container_volume |
23 |
container_issue |
2 |
container_start_page |
261 |
op_container_end_page |
280 |
_version_ |
1811646398331879424 |