Abstract
Studied was the reproductive activity of Trachelyopterus galeatus using microscopic analyses of gonads and biological indices. To evaluate the reproductive biology of T. galeatus, which is an important species in the Jequitinhonha River basin, Minas Gerais, Brazil, 254 males and 372 females were captured between May 2012 and April 2013 from the Irapé Reservoir using gillnets with meshes of various sizes. Average total length of males was 13.3 ± 2.1 and 14.3 ± 2.3 cm for females. Females were more abundant than males (1.4 females:1 male) in all total length classes. The reproductive peak of T. galeatus occurred between November and February, when the biological indices related to reproduction were highest and the physical-chemical water parameters were most favourable for reproduction in this Neotropical environment. Trachelyopterus galeatus reproduces throughout the year and is a partial spawner.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
