Produção Nacional
Revisado por pares
Alimentação de Cyphocharax voga (Hensel, 1869) (Characiformes, Curimatidae) no arroio Corrientes, Pelotas, Rio Grande do Sul, Brasil
2008; UNIVERSIDADE FEDERAL DE SANTA CATARINA; Volume: 21; Issue: 4 Linguagem: Inglês
10.5007/2175-7925.2008v21n4p117
ISSN2175-7925
AutoresFabiano Corrêa, Sérgio Renato Noguez Piedras,
Tópico(s)Aquaculture Nutrition and Growth
ResumoFeeding of Cyphocharax voga (Hensel, 1869) (Characiformes, Curimatidae) in Corrientes Stream, Pelotas, Rio Grande do Sul, Brazil. The Cyphocharax voga species is distributed from the hydrographic basin of the Paraguay River and lower Paraná up to the coastal hydrographic systems of South America. Corrientes stream sets the boundary between Turuçu and Pelotas counties and has not been a focus of detailed studies so far. The aim of this paper was to study the C. voga feeding process for a better understanding of its diet at the site. Thirty-two specimens were collected between December and March 2005, packed in ice-covered boxes and taken to the laboratory. The diet was analyzed by methods of occurrence frequency and relative frequency; for both males and females, total, average and standard deviation were registered; student's t-test and the q-square χ2 test were applied for ingested items. A total of 18 feeding categories were identifi ed, including a 100% presence of fi lamentary algae andsediment. The prevalence of these items alongside with microorganisms associated with the feeding process makes this an iliophagous species in this environment. Meaningful differences in feeding between male and female specimens were not found through q-square χ2 test.
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