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

• Type: Article in International Scientific Journal
• Date: 1996

Authors

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

Journal

Title: Journal of Fish Biology

Vol. 48

Pages: 447-456

ISSN: 0022-1112

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 21 Citations

Scopus - 22 Citations

Scientific classification

FOS: Agrarian Sciences > Agriculture, Forestry, and Fisheries

Other information

Authenticus ID: 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

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10