Genetic diversity within and between broodstocks of the white shrimp Litopenaeus vannamei (Boone, 1931) (Decapoda, Penaeidae) and its implication for the gene pool conservation.
نویسندگان
چکیده
Genetic variation within and between fifteen closed broodstock lines of the Pacific white shrimp Litopenaeus vannamei, reared at different hatcheries in the Brazilian coast, was assessed by RAPD analysis. Fifty two polymorphic loci were identified when a set of five decamer primers was used in PCR. The genetic diversity analysis within lines evidenced genetic variation loss probably related to bottleneck effects and inbreeding. In addition, the genetic divergence values between the different samples appear to reflect the initial founder composition of such stocks, in some cases, sharing a common origin, suggesting a putative importance of interbreeding for the establishment of genetic improvement programs for these broodstocks. The genetic variation monitoring appears to be helpful to the gene pool conservation of this aquaculture species, mainly if considered its exotic status in Brazil and the current impossibility of new introduction of wild individuals.
منابع مشابه
Application of microsatellite DNA method in determining genetic diversity of farmed broodstocks of Penaeus vannamei (Boone, 1931) in hatchery centers of Bushehr province
The aim of this study was to detect different populations of Pacific White Shrimp (Penaeus vannamei: Boone, 1931) in farmed broodstocks and to determine their genetics indeces in hatchery centers of Bushehr province. First, the origin of the farmed broodstocks was determined based on the historical information of the different stocks. Then, DNA was extracted from muscle tissue of 30 broodstocks...
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ورودعنوان ژورنال:
- Brazilian journal of biology = Revista brasleira de biologia
دوره 67 4 Suppl شماره
صفحات -
تاریخ انتشار 2007