Genetic evidence of postglacial population expansion in Puget Sound rockfish (Sebastes emphaeus).
Mar Biotechnol (NY)
; 7(3): 223-30, 2005.
Article
em En
| MEDLINE
| ID: mdl-15864469
ABSTRACT
Several rockfish species (genus Sebastes) along the northeastern Pacific Ocean have rapidly declined in abundance owing in part to overfishing. A striking exception is the dwarf-like Puget Sound rockfish Sebastes emphaeus, whose densities have increased by several orders of magnitude over the last several decades. To describe their genetic structure, we sequenced 395 bp from the mitochondrial control region of 128 S. emphaeus adults from 5 locations spanning approximately 120 km of the Northwest Straits of Washington state. We detected no significant genetic differentiation among these populations and substantial genetic variation within populations, a pattern that may indicate high levels of ongoing gene flow. Preliminary data from 2 microsatellite loci are also consistent with panmixia. The mtDNA sequences also suggest that Puget Sound rockfish populations have expanded substantially since the retreat of Pleistocene glaciers made habitat in Puget Sound region available approximately 12,000 years ago.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Filogenia
/
Variação Genética
/
Perciformes
/
Demografia
/
Genética Populacional
Aspecto:
Determinantes_sociais_saude
Limite:
Animals
País/Região como assunto:
America do norte
Idioma:
En
Revista:
Mar Biotechnol (NY)
Assunto da revista:
BIOLOGIA
/
BIOTECNOLOGIA
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
Estados Unidos