การระบุพันธุกรรมของสต็อกปลานิลจากเยอรมันนี โดยใช้วิธีอัลโลไซม์อิเล็กโตรโฟเรซีส

Abstract

         Genetic identification of German Orcochromis ni.lofrcus stock was carried out using allozyme electrophoresis and comparing with two other strains of the fish, the Chitralada and Egyprian srains. The study presented a very interesting result in the German strain that an only one allele was fixed at the ADA* locus which actually was shown by other previous studies to be very high polymorphic of I alleles in Oreochronis niloflcus, as being supported and confirmed again by the allozyme pattems of those two comparcd strains in this study. The resuh of ADl4* fixation of only one allele in the German stock was an appearance of losing genetic variation or diversity, which means to genetic drift or boftlenecking of the population caused by severe inbreeding ard always happening because of unawareness of good broodsrock management. A number of useful knowledges infened from the study have also been mised and considered as appropriate advices for good genetic slatus control of any Oreocfuomis niloticus stocks.