Abstract
Diet and feeding activity of Leporinus amblyrhynchus before, during and after the damming of the rio Corumbá (Goiás State March 1996 to February 1998) were investigated. The diet, evaluated using the Feeding Index (IAi), showed that this species presents an invertivore feeding habit, preying on basically Chironomidae larvae. The feeding activity, estimated using the quantity of food in the stomach during a 24-hour cycle, showed that the feeding occurs mainly in the daytime. Considering the feeding aspects of this species during the formation of the reservatório of Corumbá there were small variations in the parameters (diet and feeding activity) dealt in this study.
Highlights
S Neste estudo, foram avaliadas a dieta e atividade alimentar diária de Leporinus amblyrhynchus, antes, durante e após o represamento do rio Corumbá, GO
In addition to the work cited reservoirs have been constructed in Brazil, ecological studies above, the few references found in the literature to this spe- of the fish fauna, mainly those that deal with the influence of cies refer to fish fauna surveys
Temporal variations in diet during the formation of the reservoir were not pronounced since the species restricted its
Summary
S Neste estudo, foram avaliadas a dieta e atividade alimentar diária de Leporinus amblyrhynchus, antes, durante e após o represamento do rio Corumbá, GO (março 1996 a fevereiro 1998). According to Agostinho et al (1999) some fish species respond quickly to impoundment, whereas others respond only after years or decades, dependent to their trophic nature These authors conclude that the effects of damming on According to Garavello & Britski (1987), Leporinus structural and functional characteristics of lotic ecosystems amblyrhynchus is widely distributed in the upper rio Paraná can be established by monitoring studies carried out before and does not occur below the former Sete Quedas In this sense, countless waterfalls) or in the rio Paraguay. In addition to the work cited reservoirs have been constructed in Brazil, ecological studies above, the few references found in the literature to this spe- of the fish fauna, mainly those that deal with the influence of cies refer to fish fauna surveys
Sign-in/Register to view highlights & summary 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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
