Polymorphism in phosphohexose isomerase in white shrimp, Penaeus setiferus linnaeus, and pink shrimp, P. duorarum duorarum

Abstract

1. 1. One- and three-banded phenotypes of phosphohexose isomerase (PHI) were observed in muscle extract of white shrimp ( Penaeus setiferus Linnaeus) and in pink shrimp ( P. duorarum duorarum) on starch gel zymograms. 2. 2. Based on genetic criteria, the five anodal PHI phenotypes observed on the white shrimp and pink shrimp zymograms were assumed to be under the control of four allelic genes. 3. 3. There were no significant differences in PHI phenotype distributions either between sexes or among samples of white shrimp from Calcasieu Lake, LA or Biloxi Bay, MS, or between sexes of pink shrimp from Tampa Bay, FL. 4. 4. Based upon zymogram comparisons of white and pink shrimp we concluded that the migration rates of the white and pink shrimp alleles are similar.