Length-weight relationship and diet of the catfish Cambeva guareiensis (Siluriformes; Trichomycteridae)

Authors

  • Felipe H. N. P. Ribeiro Faculdade Eduvale de Avaré
  • Maria E. P. Bonan Faculdade Eduvale de Avaré
  • José Lucas Dias da Silva Faculdade Eduvale de Avaré
  • Valter M. Azevedo-Santos Universidade Estadual Paulista "Júlio de Mesquita Filho" https://orcid.org/0000-0001-8986-6406
  • Pedro S. Manoel Universidade Estadual Paulista "Júlio de Mesquita Filho" https://orcid.org/0000-0003-4488-981X
  • Eduardo M. Brambilla Universidade Estadual Paulista "Júlio de Mesquita Filho"
  • Carolina V. Silva Faculdade Eduvale de Avaré

Keywords:

Chironomidae, Functional trait, Populational biology, Stomach content, Stream fish, Upper Paraná basin

Abstract

Abstract: The length-weight relationship (LWR) and diet of a small trichomycterid catfish, Cambeva guareiensis, was studied based on 58 specimens captured in Corrente stream, Guareí River basin, São Paulo, Brazil. LWR analyses showed values of a ranged from 0.0097 to 0.0149 and b from 2.858 to 3.250. The analysis of the diet showed that high amounts of aquatic insects (93.75% of total items) were consumed by the species. In addition, we found no statistically significant differences when comparing the diet between the dry and rainy periods. Our study contributes to the knowledge on populational biology and feeding ecology of trichomycterid fishes in Brazilian streams.

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Published

2021-01-01

How to Cite

Ribeiro, F. H. N. P., Bonan, M. E. P., Silva, J. L. D. da, Azevedo-Santos, V. M., Manoel, P. S., Brambilla, E. M., & Silva, C. V. (2021). Length-weight relationship and diet of the catfish Cambeva guareiensis (Siluriformes; Trichomycteridae). Biota Neotropica, 21(4). Retrieved from //www.biotaneotropica.org.br/BN/article/view/1857

Issue

Vol. 21 No. 4 (2021): v21n4

Section

Short Communications

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