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หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Microsatellite Variation among Domesticated Populations of Channel Catfish {Ictalurus punctatus) and Blue Catfish {I.furcatus))

ผู้เขียน:Imgธนาทิพย์ แหลมคม, ImgHuseyin Kucuktas, ImgZhanjiang Liu, ImgPing Li, Imgดร.อุทัยรัตน์ ณ นคร, ศาสตราจารย์, ImgSirawut Klinbunga, ImgAlison Hutson, ImgAtra Chaimongkol, ImgJoseph Ballenger, ImgGloria Umali, ImgRex A. Dunham



Genetic variability between and within 15 and 5 domesticated lines and strains of channel catfish Ictalurus punctatus and blue catfish, I.furcatus respectively was examined utilizing eight microsatellite loci. The channel catfish populations were more variable than blue catfish populations. Pairwise comparisons revealed significant genetic differentiation in all population pairs. Substantial genetic differentiation over all population of channel catfish and blue catfish was observed (FST = 0.2043 and 0.2371 respectively). Among channel catfish populations, there were five main clusters: 1) GK, AS and GKal, 2) SI, S2 and MR, 3) MS, TA and ARMK, 4) T, AF and AR1, and, 5) KR, MK and KS. Among blue catfish, there were two clusters: 1) ARR and DxR, and 2) D, R and AR2. The analysis of molecular variance (AMOVA) indicated slight genetic variability at the group level, channel catfish and blue catfish group (15.05%), population level of channel catfish (20.42%) and blue catfish (23.71%), and individual level of channel catfish (14.16%) and blue catfish (2.13%). Knowledge of the genetic composition of domesticated populations can be applied to maintain and monitor genetic variation, genetic conservation, and be incorporated into breeding programs.

Article Info
KASETSART UNIVERSITY FISHERIES RESEARCH BULLETIN, Volume 32, Issue 2, May 08 - Aug 08, Page 37 - 47 |  PDF |  Page