Welkom op het expertplatform!
Dit platform verschaft informatie en kennis omtrent de WL expertisedomeinen 'hydraulica en sediment', 'havens en waterwegen', 'waterbouwkundige constructies', 'waterbeheer' en 'kustbescherming' - gaande van WL medewerkers met hun expertise, het curriculum van deze instelling, tot publicaties, projecten, data (op termijn) en evenementen waarin het WL betrokken is.
Het WL onderschrijft het belang van "open access" voor de ontsluiting van haar onderzoeksresultaten. Lees er meer over in ons openaccessbeleid.
| one publication added to basket [257931] |
The evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk Nucella lapillus
Guerra-Varela, J.; Colson, I.; Backeljau, T.; Breugelmans, K.; Hughes, R.; Rolan-Alvarez, E. (2009). The evolutionary mechanism maintaining shell shape and molecular differentiation between two ecotypes of the dogwhelk Nucella lapillus. Evolutionary Ecology 23(2): 261-280. https://dx.doi.org/10.1007/s10682-007-9221-5
In: Evolutionary Ecology. Chapman & Hall: London. ISSN 0269-7653; e-ISSN 1573-8477
|  |
| Trefwoord |
|
| Author keywords |
Adaptation; Hybrid zone; Divergent selection; Quantitative traits;Molecular variation; Heritability; Phenotypic plasticity |
| Auteurs | | Top |
- Guerra-Varela, J.
- Colson, I.
- Backeljau, T.
|
- Breugelmans, K.
- Hughes, R.
- Rolan-Alvarez, E.
|
|
| 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. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
