Data/hora: 09/06/2024 18:30:17

Biblioteca(s): | Embrapa Meio-Norte.
Data corrente: | 16/06/2015
Data da última atualização: | 25/05/2022
Autoria: | DANTAS, H. L.; SANTOS NETO, M. A. dos; OLIVEIRA, K. K. C.; SEVERI, W.; DINIZ, F. M.; COIMBRA, M. R. M.
Afiliação: | HOZANA LEITE DANTAS, Universidade Federal Rural de Pernambuco, Departamento de Pesca e Aquicultura.; MIGUEL ARCANJO DOS SANTOS NETO, Companhia Hidrelétrica do São Francisco, Estação de Piscicultura de Paulo Afonso.; KARINE KELLY CAVALCANTI OLIVEIRA, Universidade Federal Rural de Pernambuco, Departamento de Pesca e Aquicultura.; WILLIAM SEVERI, Universidade Federal Rural de Pernambuco, Departamento de Pesca e Aquicultura.; FABIO MENDONCA DINIZ, CPAMN; MARIA RAQUEL MOURA COIMBRA, Universidade Federal Rural de Pernambuco, Departamento de Pesca e Aquicultura.
Título: | Genetic diversity of captive and wild threatened catfish Pseudoplatystoma corruscans in the São Francisco River.
Ano de publicação: | 2013
Fonte/Imprenta: | Reviews in Fisheries Science, Groton, v. 21, n. 3?4, p. 237?246, 2013.
ISSN: | 1064-1262
DOI: | 10.1080/10641262.2013.800787
Idioma: | Inglês
Conteúdo: | A genetic analysis was conducted of the critically endangered migratory catfish Pseudoplatystoma corruscans from the São Francisco River basin, the basin with the second highest hydropower capacity installed in Brazil. The analysis was conducted using five microsatellite markers previously described in the literature. Genetic diversity was analyzed and compared in three wild populations and a captive broodstock for a restocking program. Catfish populations of this river showed high genetic diversity in terms of heterozygosities; however, only half of the total number of alleles found in other basins were detected. Seven private alleles occurred in this basin and most of them at low frequencies, indicating they are under threat of extinction. Overall FST and assignment test suggested low differentiation among the three wild populations; however, a marked distinction between these populations and the captive broodstock was observed. The number of alleles and low average relatedness estimates found for the captive population suggest that it could be used for restocking in areas where the wild population has collapsed, but should not be used for stock enhancement in areas where the wild population is extant. These results are important as a reference for genetic aspects that should be considered in fish management activities.
Palavras-Chave: | Endangered catfish; Fragmentação de rio; Microsatellites; Microssatélite; Repovoamento; Restocking; River fragmentation.
Thesagro: | Espécie em extinção; Surubim.
Categoria do assunto: | G Melhoramento Genético
Registro original: | Embrapa Meio-Norte (CPAMN)
Exemplares: | CPAMN - (31071-1) - UPC - AP - PP -  -  - SP 38/15 - DIS