Data/hora: 23/09/2024 19:46:51

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	23/05/2017	
Data da última atualização: 	13/07/2017	
Autoria: 	SOUSA, T. P de; MARQUES, D. K. S.; VITORINO, C de A.; FARIA, K. de C.; BRAGA, G. da S. F.; FERREIRA, D. C.; VENERE, P. C.	
Afiliação: 	TATIANE PIRES DE SOUSA, Universidade do Estado de Mato Grosso, Nova Xavantina; DEBORA KARLA SILVESTRE MARQUES, CPAP; CARLA DE ANDRADE VITORINO, Universidade Federal de Mato Grosso, Cuiaba, MT; KARINA DE CASSIA FARIA, Universidade do Estado de Mato Grosso, Cuiaba, MT; GISELE DA SILVA FERREIRA BRAGA, Universidade Federal de Mato Grosso, Cuiaba, MT; DANIELA CRISTINA FERREIRA, Universidade Federal de Mato Grosso, Cuiaba, MT; PAULO CESAR VENERE, Universidade Federal de Mato Grosso, Cuiaba, MT.	
Título: 	Cytogenetic and molecular data support the occurrence of three Gymnotus Species (Gymnotiformes: Gymnotidae) used as live bait in Corumba, Brazil: implications for conservation and management of professional fishing.	
Ano de publicação: 	2017	
Fonte/Imprenta: 	Zebrafish, v. 14, n. 2, p. 177-186, 2017.	
DOI: 	10.1089/zeb.2016.1356	
Idioma: 	Português	
Conteúdo: 	In the Pantanal of Mato Grosso do Sul, electric fish (Gymnotus spp.) are the primary source of live bait, accounting for more than three-quarters of total sales. Based on chromosomal and molecular markers, the present study attempted to identify the Gymnotus species used as bait in the region of Corumba´, Mato Grosso do Sul, Brazil. Three species were detected, based on their distinct karyotypes: G. paraguensis (2n = 54), G. sylvius (2n = 40), and G. pantanal (2n = 39-40, 1X2Y/X1X1X2X2), with no evidence being found of interspecific hybrids. All three species presented a single nucleolar organizer regions (NOR) (heterochromatin CMA3 +/DAPI-) and pericentromeric heterochromatin in almost all chromosomes, with a few distal and/or interstitial blocks. G. sylvius and G. pantanal had one and two pairs of chromosomes with 5S rDNA sites, respectively, while G. paraguensis had 17 chromosome pairs with these markers. The three species formed well-defined clusters in the DNA barcoding analysis. The integrated analysis of the cytogenetic and DNA barcoding data confirmed that the diversity of Gymnotus species exploited as live bait in the study region has been underestimated. These findings indicate that the markers analyzed represent valuable tools for the conservation and fishery management of the Gymnotus stocks exploited.	
Thesagro: 	Isca; Peixe Elétrico.	
Thesaurus Nal: 	Baitfish; Fish; Gymnotus.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (59904-1) - UPC - AP - DD - SP18420 -  - 18420 - DIS