Inheritance of alleles at ten enzymatic loci of the freshwater snail Stagnicola elodes (Basommatophora: Lymnaeidae)

Abstract

Summary: The inheritance of alleles at ten enzyme loci of Stagnicola elodes (Lymnaeidae) was analysed by laboratory crosses. Alleles for alanine aminopeptidase (2 alleles), leucine aminopeptidase (2 alleles), aspartate aminotransferase (2 alleles), β-hydroxybutyrate dehydrogenase-1 (4 alleles), 6-phosphogluconate dehydrogenase (2 alleles), esterase-2 (2 alleles), esterase-3 (2 alleles), esterase-7 (2 alleles), esterase-13 (2 alleles) and esterase-18 (2 alleles) segregate in the F₂ generation according to Mendelian expectations. Contingency X² tests for linkage done on F₂ progeny from crosses between strains homozygous for alternate alleles at two loci showed that β-hydroxybutyrate dehydrogenase-1, esterase-13 and esterase-18 are presumably linked.