Feeding habits and morphometry of digestive tracts of Geophagus brasiliensis (Osteichthyes, Cichlidae), in a lagoon of high Tibagi River, Paraná State, Brazil

Autores

  • Marcos Flávio P G de Moraes
  • Ivana de Freitas Barbola Universidade Estadual de Ponta Grossa - UEPG
  • Luiz Fernando Duboc Prefeitura Municipal de Curitiba

DOI:

https://doi.org/10.5212/publicatio%20uepg.v10i1.380

Resumo

Feeding spectrum of Geophagus brasiliensis (Osteichthyes, Cichlidae) stomach contents were analysed and morphometry of digestive tract are investigated, in Lagoa Dourada, Ponta Grossa, Paraná State, Brazil. A total of 83 specimens were captured  between April 1993 and April 1994. From each specimen, the following measurements/data were determined: total and standard length, length of intestine and abdominal cavity, intestinal coefficient (IC = 1,59), celomatic coefficient (CC = 0,36) and the relationship between intestinal length and celomatic cavity length (il/cc = 4,60). G. brasiliensis is an omnivorous species, and insects represented 46.21% of the total volume of their diet. Ephemeroptera, Odonata, Trichoptera and Diptera larvae were predominant, compounding the largest feeding  indices. The intestine is a moderately coiled tube, with intestinal folds following a “N” shape.

 

Key words: Cichlidae, Geophagus brasiliensis, feeding habit, morphometry.

DOI:10.5212/Publ.Biologicas.v.10i1.0004

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Publicado

2009-06-17

Edição

v. 10 n. 1 (2004)

Seção

Artigos

Licença

Licença Creative Commons
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