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Titolo:
Genetic diversity of wild and cultured Black Tiger Shrimp (Penaeus monodon) in the Philippines using microsatellites
Autore:
Xu, ZK; Primavera, JH; de la Pena, LD; Pettit, P; Belak, J; Alcivar-Warren, A;
Indirizzi:
Tufts Univ, Sch Vet Med, Dept Environm & Populat Hlth, N Grafton, MA 01536USA Tufts Univ N Grafton MA USA 01536 & Populat Hlth, N Grafton, MA 01536USA SEAFDEC, Dept Aquaculture, Iloilo, Philippines SEAFDEC Iloilo Philippines AFDEC, Dept Aquaculture, Iloilo, Philippines
Titolo Testata:
AQUACULTURE
fascicolo: 1-2, volume: 199, anno: 2001,
pagine: 13 - 40
SICI:
0044-8486(20010716)199:1-2<13:GDOWAC>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
POPULATION-STRUCTURE; ATLANTIC SALMON; NATURAL-POPULATIONS; BREEDING PROGRAMS; RAPD MARKERS; ALLELES; FISH; MITOCHONDRIAL; AQUACULTURE; AUSTRALIA;
Keywords:
Penaeus monodon; genetic diversity; microsatellites; mangroves; shrimp aquaculture;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
95
Recensione:
Indirizzi per estratti:
Indirizzo: Alcivar-Warren, A Tufts Univ, Sch Vet Med, Dept Environm & Populat Hlth, 200 Westboro Rd, N Grafton, MA 01536 USA Tufts Univ 200 Westboro Rd N Grafton MA USA 01536 36 USA
Citazione:
Z.K. Xu et al., "Genetic diversity of wild and cultured Black Tiger Shrimp (Penaeus monodon) in the Philippines using microsatellites", AQUACULTURE, 199(1-2), 2001, pp. 13-40

Abstract

Six microsatellites were used to study (1) the genetic diversity of wild Penaeus monodon shrimp from four geographic regions (Palawan, Quezon, Capiz and Negros Occidental-W) in the Philippines, and (2) its association with the status of mangroves and intensity of shrimp culture systems in these regions. Two cultured populations (Negros Occidental-C and Antique) were used for comparison. All six microsatellite loci were polymorphic. A total of 184 different alleles were found over all loci, The total number of alleles per locus ranged from 6 to 54, with allele size ranging from 159 base pairs (bp) to 400 bp. The observed heterozygosity of the six loci ranged from 0.47 to 1.00. The number of genotypes per locus ranged from 5 to 70, F-st values showed significant genetic differentiation among the four wild populations. Genetic differences between wild populations were also detected by pairwise comparison based on genotypic and allelic frequencies. Genetic differentiation among wild populations exhibited a positive correlation with mangrove status and intensity of culture systems at P=0.083. The Negros Occidental-W population, which originated from an area with the most severe mangrove loss and the most intensive culture systems, was the most significantly differentiated population. It also showed less genotypes per locus than the other three wild populations, suggesting a decrease in genetic diversity inthis population. The population from Capiz, a province with a wide area ofextensive culture ponds and few remaining secondary mangroves was the second most differentiated population. The Quezon population, which originated from an area with a few extensive culture ponds and less mangrove destruction, was not genetically different from the Palawan population, which was from a pristine site with mostly primary mangroves and no major aquaculture industry. The cultured populations showed less genetic diversity and were significantly different from the four wild populations based on pairwise F,, values and pairwise comparisons of allelic and genotypic frequencies. The results suggest that (a) there was a significant genetic differentiation among the wild P. monodon populations in the Philippines, and (b) the culturedpopulations were significantly differentiated from the natural populations. More replicate samples from each of the geographic regions are needed to conclusively determine the possibility of an association between genetic differentiation and the status of mangroves and/or intensity of shrimp culture systems. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 11:17:06