Genetic polymorphism of a haemoglobin chain and adenosine deaminase in European shads: Evidence for the existence of two distinct genetic entities with natural hybridization

• Tipo: Artigo em Revista Científica Internacional
• Data: 1996

Autores

Alexandrino, PJ (Autor) FCUP; Ferrand, N (Autor) FCUP; Rocha, J (Autor) FCUP

Revista

Título: Journal of Fish Biology

Vol. 48

Páginas: 447-456

ISSN: 0022-1112

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 21 Citações

Scopus - 22 Citações

Classificação Científica

FOS: Ciências agrárias > Agricultura, silvicultura e pescas

Outras Informações

ID Authenticus: P-001-EPB

DOI: 10.1006/jfbi.1996.0044

Abstract (EN): The degree of genetic differentiation between European shads, Alosa alosa and A. fallax, was studied in populations from different Portuguese hydrographic basins. Using isoelectric focusing, polymorphic variation was detected in a haemoglobin (HE) chain and in adenosine deaminase(ADA). These polymorphisms are shared by the two species but show significant differences in their gene frequency distributions. Individuals with intermediate morphological characteristics were found to exhibit intermediate allele frequencies. While not completely excluding introgression, our results strongly support the existence of two distinct species that can hybridize. (C) 1996 The Fisheries Society of the British Isles

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10