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| Provedor de dados: |
OceanDocs
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| País: |
Belgium
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| Título: |
Limitada variabilidad genética de la quinta introducción en Cuba de Litopenaeus vannamei estimada con el uso de marcadores microsatélites
Low genetic variability in the fifth introduction of Litopenaeus vannamei in Cuba, as estimated with mi- crosatellite markers.
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| Autores: |
Artiles, A.
Rodríguez, I.
Pérez, A.
Pérez, L.
Espinosa, G.
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| Data: |
2014-02-24
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| Ano: |
2011
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| Palavras-chave: |
Genetic variation
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| Resumo: |
Se estimó la variabilidad genética y el índice de parentesco entre lotes de camarón blanco del Pacífico, Litopenaeus vannamei, introducidos por quinta ocasión en Cuba, procedentes del Centro de mejora del camarón, de Estados Unidos (Shrimp Improving System: SIS), para su cultivo. La variabilidad genética se estimó mediante el genotipo de 33 muestras con cuatro loci microsatélites: M1, Pvan 1815, Pvan 0040 y Pvan 1758. El quinto lote de Litopenaeus vannamei tuvo los valores promedios de heterocigosidad esperada y observada, más bajos de todos los introduci- dos en Cuba: 0.37 y 0.27, respectivamente. Esto, unido a la poca cantidad de variantes alélicas para cada región microsatélite, indica una escasa variabilidad genética. Los valores del coeficiente de parentesco alrededor de la unidad expresan una alta consanguinidad. Todo ello sugiere el cruce de los individuos de esta introducción con otros de diferente origen o más variables genéticamente.
The present work estimated the genetic variability and relatedness index of the fifth stock of Pacific white shrimp, Litopenaeus vannamei, imported into Cuba for farming purposes from the US Shrimp Improve- ment System (SIS). Genetic variability was estimated by genotyping 33 samples for four microsatellite loci: M1, Pvan 1815, Pvan 0040 and Pvan 1758. This stock had average expected and observed heterozygosities of 0.37 and 0.27 respectively; the lowest of all stocks previously introduced in Cuba. The above, together with the low amount of allelic variants detected for each microsatellite, was suggestive of low genetic variability. In addition, pairwise relatedness coefficients clustered around unity, indicating a high degree of consanguinity. Taken as a whole, the data suggests that this breeding stock should be crossed first with other individuals from a different source or with higher genetic variability.
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| Tipo: |
Journal Contribution
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| Idioma: |
Espanhol
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| Identificador: |
Biotecnología Aplicada, 28 (3), p. 142-146
http://hdl.handle.net/1834/5346
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| Relação: |
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| Direitos: |
http://creativecommons.org/licenses/by-nc/3.0/
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