[Evaluation of genetic variability of the Kamchatka crab Paralithodes camtschaticus (Tilesius) using allozyme markers].
Interspecific genetic variation in populations of red king crab Paralithodes camtschaticus Tilesius (Litholidae, Decapoda: Crustacea) was examined using allozyme markers. The activity of 57 enzymes and the general protein presumably encoded by 92 loci was detected. The level of allozyme variability was low: the expected heterozygosity and the proportion of polymorphic loci were respectively 0.027 +/- 0.008 and 6.5%. This level of heterozygosity is three times lower than the average value for 122 crustacean species (0.082 +/- 0.007). Although genetic variants were found at 22 loci, their frequencies were generally low: only in loci 6-Pgd, Alp-1, and Pep-1 did the frequencies of the most common alleles not exceed 0.9. All polymorphic loci except one had two alleles; the exception was 6-Pgd, which had three alleles. The possible reasons for the low level of allozyme variability in red king crab are discussed.
Balakirev
E S
ES
Institute of Marine Biology, Russian Academy of Sciences, Vladivostok, Russia. esbalak@bio.dvgu.ru
Fedoseev
V Ia
VIa
D000818:Animals; D003386:Brachyura / Q000235:genetics*; D004798:Enzymes / Q000235:genetics*; D005787:Gene Frequency; D005819:Genetic Markers; D006579:Heterozygote; D011110:Polymorphism, Genetic
D004798:Enzymes; D005819:Genetic Markers