A carregar...
Publicação
High gene flow promotes the genetic homogeneity of the fish goby Pomatoschistus marmoratus (Risso, 1810) from Mar Menor coastal lagoon and adjacent marine waters (Spain)
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 185.03 KB | Adobe PDF |
Orientador(es)
Resumo(s)
The extreme environmental variability of coastal lagoons suggests that physical
and ecological factors could contribute to the genetic divergence among populations
occurring in lagoon and open-coast environments. In this study we
analysed the genetic variability of lagoon and marine samples of the sand goby,
Pomatoschistus marmoratus (Risso, 1810) (Pisces: Gobiidae), on the SW Spain
coast. A fragment of mitochondrial DNA control region (570 bp) was
sequenced for 196 individuals collected in five localities: Lo Pagan, Los Urrutias
and Playa Honda (Mar Menor coastal lagoon), and Veneziola and Mazarro´n
(Mediterranean Sea). The total haplotype diversity was h = 0.9424 ± 0.0229,
and the total nucleotide diversity was p = 0.0108 ± 0.0058. Among-sample
genetic differentiation was not significant and small-scale patterns in the distribution
of haplotypes were not apparent. Gene flow and dispersal-related life
history traits may account for low genetic structure at a small spatial scale. The
high genetic diversity found in P. marmoratus increases its potential to adapt
to changing conditions of the Mar Menor coastal lagoon.
Descrição
Palavras-chave
Coastal lagoon Connectivity Gene flow Mar Menor Mediterranean Sea Mitochondrial DNA Pomatoschistus marmoratus
Contexto Educativo
Citação
Editora
Wiley