Título:	Genetic diversity and structuring in the arapaima (Osteoglossiformes, Osteoglossidae) population reveal differences between the Amazon and the Tocantins-Araguaia basins.
Autoria:	NOGUEIRA, F. RÊGO, P. S. do QUEIROZ, H. VENERE, P. VARELA, E. S. SAMPAIO, I. SCHNEIDER, H. ARARIPE, J.
Afiliação:	FABRICIA NOGUEIRA, UNIVERSIDADE FEDERAL DO PARÁ; PERICLES S. DO REGO, UNIVERSIDADE FEDERAL DO PARÁ; HELDER QUEIROZ, INSTITUTO DE DESENVOLVIMENTO SUSTENTÁVEL MAMIRAUÁ; PAULO VENERE, UNIVERSIDADE FEDERAL DE MATO GROSSO; EDUARDO SOUSA VARELA, CNPASA; IRACILDA SAMPAIO, UNIVERSIDADE FEDERAL DO PARÁ; HORACIO SCHNEIDER, UNIVERSIDADE FEDERAL DO PARÁ; JULIANA ARARIPE, UNIVERSIDADE FEDERAL DO PARÁ.
Ano de publicação:	2020
Referência:	Anais da Academia Brasileira de Ciências, v. 92, n. 1, e20180496, mar. 2020.
Conteúdo:	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 Tocantins-Araguaia basin. The existence of these two mitochondrial lineages indicates that past events, probably occurring during the Pleistocene, resulted in the separation of the populations of this species and molded its evolutionary history, which is reflected directly in its mitochondrial DNA. The analysis of the arapaima population structure identified distinct levels of diversity within the distribution of the species, indicating specific geographic regions that will require special attention for the development of conservation and management strategies.
Thesagro:	Peixe Conservação Estrutura Animal
NAL Thesaurus:	Amazonia Maternal lineage Population structure Arapaima gigas Freshwater fish
ISSN:	1678-2690
Digital Object Identifier:	http://dx.doi.org/10.1590/0001-3765202020180496
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPASA)