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Article Title

Allozyme Evidence of the Bigeye Croaker (Micropogonias megalops) Fishery Collapse in the Upper Gulf of California

Volume

103

Issue

2

First Page

66

Last Page

78

Abstract

Allozyme analysis was used to study the genetic variability of the bigeye croaker Micropogonias megalops in the Upper Gulf of California (UGC). Samples of 55 and 65 individuals were collected from commercial fishing zones in the UGC. Starch gel electrophoresis of proteins was used. Fourteen enzymatic systems were analyzed and 30 loci were detected. All polymorphic loci wereoutside of the Hardy-Weinberg equilibrium and the inbreeding coefficient (Fis)was 86%. Allozyme indicators were considered low for the population and indicate erosion in the genetic variability. Commercial fishing catch represents a population impact. A fishery management plan incorporated into the traditional economic activities is a proposal to assure this fishery resource.