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Eco-EvolutionaryProcesses GeneratingDiversity AmongBottlenose Dolphin,Tursiops truncatus,Populations off BajaCalifornia, Mexico Iris SeguraLiliana Rojo‐ArreolaAxayácatl Rocha‐Olivares2018 год

Eco-Evolutionary Processes Generating Diversity Among Bottlenose Dolphin, Tursiops truncatus, Populations off Baja California, Mexico
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Аннотация: For highly mobile species that nevertheless show fine-scale patterns of population genetic structure, the relevant evolutionary mechanisms determining structure remain poorly understood. The bottlenose dolphin (Tursiops truncatus) is one such species, exhibiting complex patterns of genetic structure associated with local habitat dependence in various geographic regions. Here we studied bottlenose dolphin populations in the Gulf of California and Pacific Ocean off Baja California where habitat is highly structured to test associations between ecology, habitat dependence and genetic differentiation. We investigated population structure at a fine geographic scale using both stable isotope analysis (to assess feeding ecology) and molecular genetic markers (to assess population structure). Our results show that there are at least two factors affecting population structure for both genetics and feeding ecology (as indicated by stable isotope profiles). On the one hand there is a signal for the differentiation of individuals by ecotype, one foraging more offshore than the other. At the same time, there is differentiation between the Gulf of California and the west coast of Baja California, meaning that for example, nearshore ecotypes were both genetically and isotopically differentiated either side of the peninsula. We discuss these data in the context of similar studies showing fine-scale population structure for delphinid species in coastal waters, and consider possible evolutionary mechanisms.
Год издания: 2018
Авторы: Iris Segura, Liliana Rojo‐Arreola, Axayácatl Rocha‐Olivares, Gisela Heckel, Juan Pablo Gallo‐Reynoso, A. Rus Hoelzel
Издательство: Springer Science+Business Media
Источник: Evolutionary Biology
Ключевые слова: Marine animal studies overview, Marine and fisheries research, Marine Bivalve and Aquaculture Studies
Другие ссылки: Evolutionary Biology (PDF)
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Europe PMC (PubMed Central) (PDF)
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LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (PDF)
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PubMed Central (HTML)
Durham Research Online (Durham University) (HTML)
Durham Research Online (Durham University) (HTML)
Durham Research Online (Durham University) (PDF)
Durham Research Online (Durham University) (HTML)
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