Document Type
Article
Publication Date
6-1-2006
Department
Biological Sciences
School
Biological, Environmental, and Earth Sciences
Abstract
The catfish, Eremophilus mutisii, was cultured under different densities in artificial rainfall reservoirs at Caldas, Boyaca, Colombia. At capture, the average total length of the animals was 10 cm and the weight ranged between 9 and 10 g. These fish were in initial stages of sexual development. After a year in the reservoirs, they had increased in length and weight as follows (densities in parentheses): 5.22 cm and 27.23 g (0.5 individuals/m(2))); 1.98 cm and 8.79 g (1 individual/m(2)), and 2.45 cm and 0.82 g (2 individuals/m(2)). They were at the early stages of sexual maturity, and their condition factor fluctuated between 0.61 and 0.96. They preferably ingested insect larvae that were found in benthic and littoral communities of the reservoirs. The benthos was dominated by ephippia of Daphnia, lumbriculids, and chironomid larvae. The biomass of benthic organisms ranged between 0.1126 and 1.3847 g/m(2). In the littoral community aquatic insects were the most important component, especially the hemipterans. The biomass of the littoral fauna ranged between 0.14 and 4.05 g/m(2).
Publication Title
Revista de Biologia Tropical
Volume
54
Issue
2
First Page
589
Last Page
597
Recommended Citation
Pinilla, G.,
Abril, M.,
González, E.
(2006). Growth, Feeding and Reproduction of the Catfish Eremophilus mutisii (Pisces : Trichomycteridae), from Artificial Reservoirs in Colombia. Revista de Biologia Tropical, 54(2), 589-597.
Available at: https://aquila.usm.edu/fac_pubs/8552