Bibliographic citations
Ferro, J., (2019). Características fenotípicas según maduración gonadal de la “mota” Calophysus macropterus (LICHTENSTEIN, 1819), cultivada en estanques en el centro de investigaciones “Miguel Castañeda Ruíz” IIAP San Martín [Universidad Nacional de la Amazonía Peruana]. https://hdl.handle.net/20.500.12737/7660
Ferro, J., Características fenotípicas según maduración gonadal de la “mota” Calophysus macropterus (LICHTENSTEIN, 1819), cultivada en estanques en el centro de investigaciones “Miguel Castañeda Ruíz” IIAP San Martín []. PE: Universidad Nacional de la Amazonía Peruana; 2019. https://hdl.handle.net/20.500.12737/7660
@misc{renati/965984,
title = "Características fenotípicas según maduración gonadal de la “mota” Calophysus macropterus (LICHTENSTEIN, 1819), cultivada en estanques en el centro de investigaciones “Miguel Castañeda Ruíz” IIAP San Martín",
author = "Ferro Magallanes, Juvinal Fernando",
publisher = "Universidad Nacional de la Amazonía Peruana",
year = "2019"
}
The objective of this study was to know the phenotypic characteristics according to gonadal maturation of Calophysus macropterus "mota" breeders, cultivated in ponds at the "Miguel Castañeda Ruiz" research center; IIAP-SM, between the months of May to October 2018. 11 female and 19 male specimens were evaluated to record standard biometry, external morphological characters, as well as sexual maturity and gonadosomatic index. The females had a larger size and weight of 47.3 cm and 1920gr respectively compared to males of 39.7 cm and 1040gr, with a significant difference between both. Only four external morphometric characteristics: body width, adipose fin height, interorbital and anteorbital length, showed a significant difference (kolmogorov and Mann Whitney P <0.05), between both sexes. The urogenital orifice of female Calophysus macropterus specimens is different from the urogenital orifice of the male, in the female there is a short distance and a groove between the anus and the genital papilla. Gonadal maturity was comprised of stages II in May, III in June, IV in July, V August and VI September in females, and stages III in May and V in August were registered for males. It is concluded that it is possible to phenotypically differentiate male and female Calophysus macropterus specimens through standard biometry and external morphometric characters.
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