(Morphophysiological indicators values of the curimbatá Prochilodus scrofa Steindachner, 1881)

Abstract

Morphophysiological indicator values were determined for male and female "curimbatá" Prochilodus scrofa during the period of gonad maturation. The relative weight of the liver (HSR), gonads (GSR) and viscera (VSR) showed significant differences between sexes and stages of gonadal development in the following situations: 1) HSR = in the ripe stage (Pâ"°¥0.05); 2) GSR = at all stages (P â"°¥ 0.01); 3) VSR = in the ripe stage (P â"°¥  0.01). The chemical analysis of hepatic (HL), gonadal (GL) and visceral lipids (VL) indicated differences in: 1) HL = only in the ripening stage (P â"°¥ 0.01); 2) GL = at the stages: resting, ripening and spent (P â"°¥ 0.01); 3) VL = in the ripe (P â"°¥ 0.01) and spent (P â"°¥ 0.05) stages. A linear regression applied found a significant correlation between the following biometric and chemical parameters: 1) HSR x HL = male in the resting (0.01 â"°¤ P â"°¤ 0.05) and spent (P â"°¥ 0.05) stages and male and female in the resting stage (P â"°¥ 0.05); 3) VSR x VL = male in the ripe stage (P â"°¥ 0.05), female in the ripening (P â"°¥ 0.05 ) and spent stages (P â"°¥ 0.01).