| Registro completo |
| Provedor de dados: |
Genet. Mol. Biol.
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| País: |
Brazil
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| Título: |
PCR-based VNTR core sequence analysis for inferring genetic diversity in the shrimp Litopenaeus vannamei
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| Autores: |
Freitas,Patrícia Domingues de
Galetti Junior,Pedro Manoel
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| Data: |
2002-01-01
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| Ano: |
2002
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| Palavras-chave: |
Litopenaeus vannamei
Genetic diversity
Shrimp
VNTR
PCR
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| Resumo: |
The genetic variation in two farmed strains (F3-Panama and F17-Venezuela) of the shrimp Litopenaeus vannamei was examined based on DNA multiloci analyses. Eighteen adults of each strain were analyzed by PCR using a set of VNTR core sequence primers. Genetic similarity, mean allele frequency, mean heterozygosity and the frequency of polymorphic loci were determined for both strains. A dendrogram of genetic similarity was produced by UPGMA clustering. The results for three primers (INS, M13, YN73) revealed different levels of genetic variation within the strains. The higher genetic similarity seen within strain F17 was apparently related to inbreeding, although a bottleneck effect could not be discarded. The low level of genetic variability of this strain could account for the reduced adaptive advantage of these animals and their inability to adjust to breeding conditions in Brazil.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000400012
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| Editor: |
Sociedade Brasileira de Genética
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| Relação: |
10.1590/S1415-47572002000400012
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| Formato: |
text/html
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| Fonte: |
Genetics and Molecular Biology v.25 n.4 2002
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| Direitos: |
info:eu-repo/semantics/openAccess
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