Asymmetrical dispersal and putative isolation-by-distance of an intertidal blenniid across the Atlantic-Mediterranean divide
| Autor: | Regina L. Cunha, Eva Maria Velasco, Cláudia Faria, Joana Isabel Robalo, Rita Castilho |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine Salaria Population lcsh:Medicine Marine Biology Genetic differentiation 010603 evolutionary biology 01 natural sciences Coryphoblennius-Galerita Iberian peninsula General Biochemistry Genetics and Molecular Biology Salaria-Pavo Peacock Blenny 03 medical and health sciences Mitochondrial-Dna Control region Refugium (population biology) Montagus Blenny 14. Life underwater Peacock blenny Patterns Isolation by distance Panmixia biology Ecology General Neuroscience lcsh:R General Medicine biology.organism_classification LGM Evolutionary Studies Phylogeography 030104 developmental biology Biogeography Genetic structure Asymmetric migration Aquaculture Fisheries and Fish Science Mediterranean-atlantic Biological dispersal Mediterranean–Atlantic General Agricultural and Biological Sciences |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP PeerJ, Vol 5, p e3195 (2017) PeerJ |
| Popis: | Transition zones are of high evolutionary interest because unique patterns of spatial variation are often retained. Here, we investigated the phylogeography of the peacock blenny, Salaria pavo, a small marine intertidal fish that inhabits rocky habitats of the Mediterranean and the adjacent Atlantic Ocean. We screened 170 individuals using mitochondrial and nuclear sequence data from eight locations. Four models of genetic structure were tested: panmixia, isolation-by-distance, secondary contact and phylogeographic break. Results indicated clear asymmetric migration from the Mediterranean to the Atlantic but only marginally supported the isolation-by-distance model. Additionally, the species displays an imprint of demographic expansion compatible with the last glacial maximum. Although the existence of a refugium in the Mediterranean cannot be discarded, the ancestral lineage most likely originated in the Atlantic, where most of the genetic diversity occurs. MarinERA project "Marine phylogeographic structuring during climate change: the signature of leading and rear edge of range shifting populations"; Eco-Ethology Research Unit' Strategic Plan [PEst-OE/MAR/UI0331/2011]; MARE from Fundacao para a Ciencia e a Tecnologia-FCT [UID/MAR/04292/2013]; CCMAR Strategic Plan from Fundacao para a Ciencia e a Tecnologia-FCT [PEst-C/MAR/LA0015/2011, UID/Multi/04326/2013]; FCT Portuguese Science Foundation [SFRH/BPD/109685/2015] info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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