Determinação da curva de crescimento através da lepidologia em diferentes áreas do corpo de Astyanax bimaculatus (Linnaeus, 1758) (Pisces, Characidae), na Represa de Ibitinga, SP

• Autor(a) principal: Giamas, Maria Teresa Duarte
• Data de Publicação: 1992
• Outros Autores: Santos, Ricardo Amaro do, Vermulm Junior, Harry, Campos, Elmar Cardoso, Camara, Jaime José Casari da
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Brazilian Journal of Veterinary Research and Animal Science
• Texto Completo: https://www.revistas.usp.br/bjvras/article/view/51983
• topic: Growth; Fishes ("tambiú”); Astyanax bimaculatus; São Paulo; Brazil; Crescimento; Peixes (tambiú); Astyanax bimaculatus; São Paulo

The counting of age rings in scales method was employed to determine growth curve for Astyanax bimaculatus in Ibitinga Reservoir (21°46'S and 48°59’W), according to von Bertalanffy, equation. 50 specimes, caught from July 1989 to June 1990 were analysed. It was also determined that the best body region for scales lecture, according to WERDER and SOARES 18 (1984), was surrounding the pectoral fin (E region). Observed results showed: - for 8 age classes, mean total lengths were: 1 - 61.03 mm; 2 - 75.30 mm; 3 - 86.67 mm; 4 - 97.92 mm; 5 - 109.80 mm; 6 - 121.75 mm; 7 - 134.13 mm and 8 - 144.40 mm. - The general growth curve equation estimated from the obtained data is: ^Lt = 223,14 [1 – e -0,1027 (t + 1,8549) ]