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Microsatellites revealed no genetic differentiation between hatchery and contemporary wild populations of striped catfish, Pangasianodon hypophthalmus (Sauvage 1878) in Vietnam

Ha, Hung Phuoc, Nguyen, Thuy Thi Thu, Poompuang, Supawadee and Na-Nakorn, Uthairat 2009, Microsatellites revealed no genetic differentiation between hatchery and contemporary wild populations of striped catfish, Pangasianodon hypophthalmus (Sauvage 1878) in Vietnam, Aquaculture, vol. 291, no. 3-4, pp. 154-160, doi: 10.1016/j.aquaculture.2009.03.017.

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Title Microsatellites revealed no genetic differentiation between hatchery and contemporary wild populations of striped catfish, Pangasianodon hypophthalmus (Sauvage 1878) in Vietnam
Formatted title Microsatellites revealed no genetic differentiation between hatchery and contemporary wild populations of striped catfish, Pangasianodon hypophthalmus (Sauvage 1878) in Vietnam
Author(s) Ha, Hung Phuoc
Nguyen, Thuy Thi Thu
Poompuang, Supawadee
Na-Nakorn, Uthairat
Journal name Aquaculture
Volume number 291
Issue number 3-4
Start page 154
End page 160
Publisher Elsevier Scientific
Place of publication Amsterdam, Netherlands
Publication date 2009-06-16
ISSN 0044-8486
1873-5622
Keyword(s) striped catfish
Pangasianodon hypophthalmus
hatchery stocks
domestication
genetic diversity
Summary Aquaculture of the striped catfish, Pangasianodon hypophthalmus (Sauvage 1878), in Vietnam has become one of the fastest growing primary food production sectors in the world. Although a demand on quantity of fingerlings is currently reached, it is likely that the long term quality of the stocks may be uncertain due to lacking of genetic broodstock management measures. The present study employed five microsatellite loci to investigate levels of genetic variation of the stripped catfish of the current wild stocks as well as of the selected hatcheries in Vietnam. The study included four hatchery populations and two wild populations spawned in 2005 in the Mekong and Bassac Rivers, and one wild population (spawned in 2006) in the Bassac River. The results showed no genetic differentiation among populations as revealed by FST and a model-based clustering method. AMOVA also showed no genetic differentiation between pooled wild and pooled hatchery populations while variation within groups was significant. Genetic variation of wild (mean number of alleles per locus, A = 4.80–6.20; allelic richness, Ar = 4.54–5.06; mean effective number of alleles per locus, Ae = 2.86–3.20; observed heterozygosity, Ho = 0.62–0.65; expected heterozygosity, He = 0.62–0.64) and hatchery populations (A = 4.60–5.20; Ar = 4.10–4.83; Ae = 2.80–3.11; Ho = 0.61–0.66; He = 0.61–0.64) were not statistically different. There were no evidences for recent genetic bottleneck in all populations. Therefore it is implied that the hatchery stocks of striped catfish in Vietnam were founded from sufficient numbers of brooders and current population size is large. The domestication process is in an early stage.
Language eng
DOI 10.1016/j.aquaculture.2009.03.017
Field of Research 070401 Aquaculture
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2009, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30021370

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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Created: Mon, 14 Dec 2009, 20:54:30 EST by Thuy Nguyen

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