Consulta: creatorFacets:"Rêgo,Péricles S. do"
Registros recuperados: 2
Data/hora: 16/06/2024 20:33:54

Genetic characterisation of populations of the critically endangered Goliath grouper ( Epinephelus itajara,  Serranidae) from the Northern Brazilian coast through analyses of mtDNA
Provedor de dados: 74
Autores: Silva-Oliveira,Gláucia C.; Rêgo,Péricles S. do; Schneider,Horacio; Sampaio,Iracilda; Vallinoto,Marcelo.
The Goliath grouper ( Epinephelus itajara ) is one of the most endangered species of fish of the subfamily Epinephelinae. Slow to develop and mature, and dependent on mangrove habitats for breeding, the species also suffers intense harvesting, which has reduced drastically in numbers in many areas. To contribute to the understanding of the characteristics of  E. itajara  populations, we conducted a molecular genetics study of the species, focusing on populations from the Northern Brazilian coast. The mtDNA control region (D-loop) of 116 individuals from five localities (Bragança, Ajuruteua, Parnaíba, Fortaleza and Natal) was analysed, and a sequence of 499 base pairs identified. Analyses of the sequences indicated that genetic variability was generally...
Palavras-chave: Goliath grouper; Epinephelus itajara; Control region; MtDNA; Population genetics.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000500029

Genetic diversity and structuring in the arapaima (Osteoglossiformes, Osteoglossidae) population reveal differences between the Amazon and the Tocantins-Araguaia basins
Provedor de dados: 42
Autores: Nogueira,Fabrícia; Rêgo,Péricles S. do; Queiroz,Helder; Venere,Paulo; Varela,Eduardo S.; Sampaio,Iracilda; Schneider,Horacio; Araripe,Juliana.
Abstract  Arapaima is a widely-distributed fish of enormous economic importance in the Amazon region. In the present study, a total of 232 specimens were sampled, 121 from five sites in the Amazon basin and 111 from five sites in the Tocantins-Araguaia basin. The analyses investigated fragments of the Cytochrome b, Control Region, Cytochrome Oxidase I, NADH dehydrogenase subunit 2 and seven loci microsatellites. The analyses revealed the existence of two mitochondrial lineages within the general area, with no haplotypes shared between basins, and genetic variability significantly higher in the Amazon than in the Tocantins-Araguaia basin. Two divergent, but sympatric mitochondrial lineages were found in the Amazon basin, but only a single lineage in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon Basin; Tocantins-Araguaia Basin; Lineages; Structure population; Conservation.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100703