Genetic variation in native and farmed populations of Tambaqui (Colossoma macropomum) in the Brazilian Amazon: regional discrepancies in farming systems

被引：16

作者：

Aguiar, Jonas ^{[1
]}

Schneider, Horacio ^{[2
]}

Gomes, Fatima ^{[2
]}

Carneiro, Jeferson ^{[2
]}

Santos, Simoni ^{[2
]}

Rodrigues, Luis R. ^{[1
]}

Sampaio, Iracilda ^{[2
]}

机构：

[1] Univ Fed Oeste Para UFOPA, Lab Genet & Biodiversidade LGBIO, BR-68040440 Santarem, PA, Brazil

[2] Univ Fed Para UFPA, Inst Estudos Costeiros, Lab Genet & Biol Mol, BR-68600000 Braganca, PA, Brazil

来源：

ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS | 2013年 / 85卷 / 04期

关键词：

Tambaqui; mitochondrial DNA; genetic variability; Aquaculture; VARIABILITY;

D O I：

10.1590/0001-376520130007

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The tambaqui, Colossoma macropomum, is the most popular fish species used for aquaculture in Brazil but there is no study comparing genetic variation among native and fanned populations of this species. In the present study, we analyzed DNA sequences of the mitochondrial DNA to evaluate the genetic diversity among two wild populations, a fry-producing breeding stock, and a sample of fish farm stocks, all from the region of Santarem, in the west of the Brazilian state of Para. Similar levels of genetic diversity were found in all the samples and surprisingly the breeding stock showed expressive representation of the genetic diversity registered on wild populations. These results contrast considerably with those of the previous study of fanned stocks in the states of Amapa, Para, Piaui, and Rondonia, which recorded only two haplotypes, indicating a long history of endogamy in the breeding stocks used to produce fry. The results of the two studies show two distinct scenarios of tambaqui farming in the Amazon basin, which must be better evaluated in order to guarantee the successful expansion of this activity in the region, and the rest of Brazil, given that the tambaqui and its hybrids are now fanned throughout the country.

引用

页码：1439 / 1447

页数：9

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