Seascape Genetics of a Globally Distributed, Highly Mobile Marine Mammal: The Short-Beaked Common Dolphin (Genus Delphinus)
| Autor: | Kerstin Bilgmann, Kelly M. Robertson, Dmitri Boutov, Luís Freitas, Ana Amaral, Maria M. Coelho, Marina Sequeira, Luciana M. Möller, Luciano B. Beheregaray, Karen A. Stockin |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Common dolphin
Common Dolphins Population lcsh:Medicine Marine Biology Biology Oceanography Animals education lcsh:Science Isolation by distance Seascape Genetics education.field_of_study Evolutionary Biology Multidisciplinary Ecology Marine reserve lcsh:R Temperature biology.organism_classification Biological Evolution Fishery Genetics Population Community Ecology Genetic structure Biological dispersal lcsh:Q Conservation biology Research Article Ecological Environments |
| Zdroj: | PLoS ONE PLoS ONE, Vol 7, Iss 2, p e31482 (2012) |
| ISSN: | 1932-6203 |
| Popis: | Identifying which factors shape the distribution of intraspecific genetic diversity is central in evolutionary and conservation biology. In the marine realm, the absence of obvious barriers to dispersal can make this task more difficult. Nevertheless, recent studies have provided valuable insights into which factors may be shaping genetic structure in the world's oceans. These studies were, however, generally conducted on marine organisms with larval dispersal. Here, using a seascape genetics approach, we show that marine productivity and sea surface temperature are correlated with genetic structure in a highly mobile, widely distributed marine mammal species, the short-beaked common dolphin. Isolation by distance also appears to influence population divergence over larger geographical scales (i.e. across different ocean basins). We suggest that the relationship between environmental variables and population structure may be caused by prey behaviour, which is believed to determine common dolphins' movement patterns and preferred associations with certain oceanographic conditions. Our study highlights the role of oceanography in shaping genetic structure of a highly mobile and widely distributed top marine predator. Thus, seascape genetic studies can potentially track the biological effects of ongoing climate-change at oceanographic interfaces and also inform marine reserve design in relation to the distribution and genetic connectivity of charismatic and ecologically important megafauna. |
| Databáze: | OpenAIRE |
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