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Mitochondrial and nuclear intraspecific variation in the rusty blenny (Parablennius sanguinolentus, Blenniidae)
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Orientador(es)
Resumo(s)
The genetic structure of Parablennius
sanguinolentus from the northeastern Atlantic and
Mediterranean was assessed using sequences from the
mitochondrial control region (CR) and the first intron
of the nuclear S7 ribosomal protein gene (S7). Our
data show high genetic diversity for the central
Mediterranean populations, contrasting with very
low diversity in the Atlantic populations and in the
westernmost Mediterranean population of Cabo de
Gata. Both CR mismatch analysis and neutrality tests
provide evidence of demographic and spatial expansion
for the Atlantic and central Mediterranean
populations. The significant correlation between
genetic and geographic distances supported isolation-
by-distance for the S7, but not for the CR,
suggesting a complex scenario for the history of the
rusty blenny in the Mediterranean Sea. The pattern of
genetic structure displayed by P. sanguinolentus could
be explained as the result of a post-glacial colonization
of the Atlantic coast of Europe from the Mediterranean
Sea.
Descrição
Palavras-chave
Parablennius sanguinolentus Atlantic Mediterranean Mitochondrial control region S7 gene intron Genetic structure
Contexto Educativo
Citação
Hydrobiologia, 802(1), 141-154 Doi: 10.1007/s10750-017-3248-6
Editora
Kluwer Academic Publishers