Autoria: MAGGIONI, R.; COIMBRA, M. R. M.; COSTA, R. B. da; DINIZ, F. M.; MOLINA, W. F.; OLIVEIRA, D. M. de; LEGAT, A. P.

Resumo: The objective of this work was to estimate the genetic variability level and distribution in Brazilian broodstocks of marine shrimp (Litopenaeus vannamei). Nine of the country?s largest hatcheries were evaluated using codominant and highly polymorphic microsatellite markers. The results obtained from genotyping of ten microsatellite loci are indicative of genetic variability that is compatible with that found in wild populations of L. vannamei in Mexico and Central America. A possible explanation is the highly diversified and relatively recent origin of the available broodstocks. Bayesian analysis detected a signal for five founding populations. The distribution of genetic distances partially reflects geographical location, and this information will be useful for the creation of new broodstocks. Therefore, L. vannamei genetic variability among nine of the largest national hatcheries can be considered high.

Ano de publicação: 2013

Tipo de publicação: Artigo de periódico

Unidade: Embrapa Meio-Norte

Palavras-chave: Aquacultura, Aquaculture, Carcinicultura, Litopenaeus vannamei, Microsatellite repeats, Microssatélite, Shrimp farming