Variation of genetic and behavioural traits in the sandhopperTalitrus saltator(Crustacea Amphipoda) along a dynamic sand beach
| Autor: | Claudia Rossano, Valerio Ketmaier, E. De Matthaeis, Lucia Fanini, Felicita Scapini |
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| Rok vydání: | 2010 |
| Předmět: |
Shore
geography Genetic diversity geography.geographical_feature_category Amphipoda biology Ecology Talitrus saltator mitochondrial dna sandy beach cytochrome oxidase i biology.organism_classification Analysis of molecular variance Crustacean orientation talitrus saltator Animal Science and Zoology Genetic variability Sequence variation Ecology Evolution Behavior and Systematics |
| Zdroj: | Ethology Ecology & Evolution. 22:17-35 |
| ISSN: | 1828-7131 0394-9370 |
| DOI: | 10.1080/03949370903515919 |
| Popis: | In an attempt to unravel the possible relationships among coastal stability, genetic variability and orientation behaviour in the sandhopper Talitrus saltator, we have screened four subpopulations of this species. Sandhoppers along 3 km of a dynamic sand beach were studied for orientation performance (i.e. adherence to the seaward theoretical escape direction (TED)) and sequence variation for a fragment of the mitochondrial (mt) gene encoding for the cytochrome oxidase subunit I (COI). The sampling sites differed in the stability of the shoreline (from severely eroded to accreting). Analysis of molecular variance (AMOVA) revealed significant subdivisions among the four locations. The subpopulation sampled at the most eroded point showed no haplotype diversity and had the highest scatter in orientation. Genetic diversity increased with decreasing erosion. Orientation performances were best where the beach is in dynamic equilibrium, and were progressively more scattered at the accreting points. Multiple lin... |
| Databáze: | OpenAIRE |
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