Divergence in proteins, mitochondrial DNA, and reproductive compatibility across the isthmus of Panama.
Science
; 260(5114): 1629-32, 1993 Jun 11.
Article
em En
| MEDLINE
| ID: mdl-8503007
It is widely believed that gene flow connected many shallow water populations of the Caribbean and eastern Pacific until the Panama seaway closed 3.0 to 3.5 million years ago. Measurements of biochemical and reproductive divergence for seven closely related, transisthmian pairs of snapping shrimps (Alpheus) indicate, however, that isolation was staggered rather than simultaneous. The four least divergent pairs provide the best estimate for rates of molecular divergence and speciation. Ecological, genetic, and geological data suggest that gene flow was disrupted for the remaining three pairs by environmental change several million years before the land barrier was complete.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Filogenia
/
Decápodes
/
DNA Mitocondrial
/
Isoenzimas
Limite:
Animals
País/Região como assunto:
America central
/
Panama
Idioma:
En
Revista:
Science
Ano de publicação:
1993
Tipo de documento:
Article
País de afiliação:
Panamá
País de publicação:
Estados Unidos