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Growth, feeding and reproduction of the catfish Eremophilus mutisii (Pisces: Trichomycteridae), from artificial reservoirs in Colombia

dc.creatorPinilla, Gabriel
dc.creatorAbril, Maritza
dc.creatorGonzález, Esperanza
dc.date2014-03-18
dc.date.accessioned2016-05-03T15:30:23Z
dc.date.available2016-05-03T15:30:23Z
dc.identifierhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/13925
dc.identifier10.15517/rbt.v54i2.13925
dc.identifier.urihttp://hdl.handle.net/10669/26825
dc.descriptionThe catfish, Eremophilus mutisii, was cultured under different densities in artificial rainfall reservoirsat Caldas, Boyacá, Colombia. At capture, the average total length of the animals was 10 cm and the weightranged 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 (0.5individuals/m2)); 1.98 cm and 8.79 g (1 individual/m2), and 2.45 cm and 0.82 g (2 individuals/m2). They were atthe early stages of sexual maturity, and their condition factor fluctuated between 0.61 and 0.96. They preferablyingested insect larvae that were found in benthic and littoral communities of the reservoirs. The benthos wasdominated by ephippia of Daphnia, lumbriculids, and chironomid larvae. The biomass of benthic organismsranged between 0.1126 and 1.3847 g/m2. In the littoral community aquatic insects were the most importantcomponent, especially the hemipterans. The biomass of the littoral fauna ranged between 0.14 and 4.05 g/m2.en-US
dc.descriptionEl “capitán de la sabana”, Eremophilus mutisii(Humboldt, 1805), fue cultivado en diferentes densidades en pequeños lagos artificiales localizados en Caldas, Boyacá, Colombia. Al inicio, el promedio de la longitud corporal fue 10 cm y el peso osciló entre 9 y 10 gr. Los peces se encontraban en estados iniciales de desarrollo sexual. Luego de un año de experimentación, los peces cultivados a una densidad de 0.5 ind/m2 incrementaron 5.22 cm en longitud y 27.23 gr en promedio (1 ind/m2: 1.98 cm y 8.79 gr; 2 ind/m2: 2.45 cm y 0.82 gr). Los peces se encontraban iniciando su madurez sexual, y su factor de condición fluctuó entre 0.61 y 0.96 y consumían principalmente larvas de insectos. El bentos estaba dominado por efipios de Daphnia, lumbricúlidos y larvas de quironómidos. La biomasa de organismos benticos osciló entre 0.1126 y 1.3847 gr/m2. En la comunidad litoral, los insectos acuáticos fueron los componentes mas importantes, especialmente los hemípteros. La biomasa de la fauna litoral osciló entre 0.14 y 4.05 gr/m2.es-ES
dc.formatapplication/pdf
dc.languagespa
dc.publisherUniversidad de Costa Ricaen-US
dc.rightsCopyright (c) 2014 International Journal of Tropical Biology and Conservationen-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 54 (2) June 2006; 589-597en-US
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 54 (2) June 2006; 589-597es-ES
dc.sourceRevista Biología Tropical; Vol. 54 (2) June 2006; 589-597pt-PT
dc.source2215-2075
dc.source0034-7744
dc.source10.15517/rbt.v54i2
dc.subjectEremophilus mutisiien-US
dc.subjectTrichomycteridaeen-US
dc.subjectgrowth observationsen-US
dc.subjectgut contenten-US
dc.subjectColombiaen-US
dc.titleGrowth, feeding and reproduction of the catfish Eremophilus mutisii (Pisces: Trichomycteridae), from artificial reservoirs in Colombiaen-US
dc.titleGrowth, feeding and reproduction of the catfish Eremophilus mutisii (Pisces: Trichomycteridae), from artificial reservoirs in Colombiaes-ES
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion


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