000			02803nab a2200313 i 4500
003			BR-BrBNA
005			20240209133358.0
008			240209b2023 bl.ar|pooa||| 00| 0 eng |
040			_aBR-BrBNA _beng
072			_aL53 _b8140
100			_aSalmito-Vanderley, Carminda Sandra Brito
100			_aFerreira, Pedro Emidio Leite Moraes
100			_aSouza, Mirley Barbosa de
100			_aMadeira, Guilherme Melo
100			_aBrito, Bruna Faria
100			_aMagalhães, Lívia Correia
100			_aMelo, Carlos Henrique Sousa de
100			_aMontenegro, Assis Rubens
245			_aUse of B-mode ultrasonography for sex determination and maturation monitoring in Prochilodus brevis (Steindachner 1875)
500			_aPublicação on-line; 22 ref.; 6 illus.; Summary (En)
520			_a ABSTRACT - The Brazilian bocachico is a rheophilic fi sh from the northeast region of Brazil that holds great economic and scientific interest. The absence of evident sexual dimorphism and the invasive character of sexing methods and evaluation of gonadal maturation are obstacles to its artifi cial reproduction. In this scenario, ultrasonography emerges as a non-invasive method for sexing. The objectives of this study were to establish an ultrasound sexing method for Brazilian bocachico and select equations to estimate the gonadosomatic index (GSI), gonad weight (GW), and gonad volume (GV) of live bocachico. A total of 32 bocachico fi sh (18 females and 14 males) were analyzed ultrasonographically and morphologically. The association of morphometric and ultrasonographic parameters was investigated using Pearson Correlations. The following prediction equations were selected using multiple regression analysis: GSI = 16.22 × transvarea; GW = 30.3 × transvarea; and GV = 0.001260036 × pixels. A model capable of predicting the sex of the animals based on the ultrasonographic parameters was obtained using partial least-squares discriminant analysis with principal component analysis. The significance level adopted was P < 0.05. In conclusion, ultrasonography is a useful tool to perform sexing and evaluate the gonads during the breeding season, contributing to artificial reproduction in captivity. Key words: Fisheries. Brazilian Bocachico. Native fi sh. Gonadosomatic Index. Ultrasound.
650			_aPEIXE DE ÁGUA DOCE
650			_aREPRODUÇÃO ANIMAL
650			_aULTRASSOM
773	0		_04290 _9275636 _dFortaleza-CE Universidade Federal do Ceará. Centro de Ciências Agrárias 2002 _o2023-437436 _tRevista Ciência Agronômica (Brazil) _x0045-6888; 1806-6690 (on-line) _gv. 54 p. 1-8; (2023) _wBR2023002374
856			_uhttps://www.scielo.br/j/rca/a/59sfzr7vQfprppn4KVjqBwQ/?format=pdf&lang=en
942			_cAnalítica
999			_c298487 _d298487