Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.12/1352
Título: Northern refugia and recent expansion in the North Sea: The case of the wrasse Symphodus melops (Linnaeus, 1758)
Autor: Robalo, Joana Isabel
Castilho, Rita
Francisco, Sara Martins
Almada, Frederico
Knutsen, Halvor
Jorde, Per Erik
Pereira, Ana Martins
Almada, Vítor Carvalho
Palavras-chave: Atlantic coast
Glacial refugia
North sea
Spatial variation of genetic diversity
Data: 2011
Editora: Blackwell Publishing
Citação: Ecology and Evolution, 2 (1), 153-164
Resumo: Pleistocene climate changes have imposed extreme conditions to intertidal rocky marine communities, forcing many species to significant range shifts in their geographical distributions. Phylogeographic analyses based on both mitochondrial and nuclear genetic markers provide a useful approach to unravel phylogeographic patterns and processes of species after this time period, to gain general knowledge of how climatic changes affect shifts in species distributions.We analyzed these patterns on the corkwing wrasse (Symphodus melops, Labridae), a rocky shore species inhabiting North Sea waters and temperate northeastern Atlantic Ocean from Norway toMorocco including theAzores, using a fragment of the mitochondrial control region and the first intron of the nuclear S7 ribosomal protein gene.We found that S. melops shows a clear differentiation between the Atlantic and the Scandinavian populations and a sharp contrast in the genetic diversity, high in the south and low in the north. Within each of these main geographic areas there is little or no genetic differentiation. The species may have persisted throughout the last glacial maximum in the southern areas as paleotemperatures were not lower than they are today in North Scandinavia. The North Sea recolonization most likely took place during the current interglacial and is dominated by a haplotype absent from the south of the study area, but present in Plymouth and Belfast. The possibility of a glacial refugium in or near the English Channel is discussed.
Peer review: yes
URI: http://hdl.handle.net/10400.12/1352
ISSN: 2045-7758
Aparece nas colecções:UIE-E - Artigos em revistas internacionais

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