Throphic groups of demersal fish community from the continental shelf: Ubatuba, Brazil. I. Chrondrichthyes

Authors

  • Lucy Satiko Hashimoto Soares Universidade de São Paulo; Instituto Oceanográfico
  • Carmen Lúcia Del Bianco Rossi-Wongtschowski Universidade de São Paulo; Instituto Oceanográfico
  • Laura Martins Castro Alvares Universidade de São Paulo; Instituto Oceanográfico
  • Elizabeti Yuriko Muto Universidade de São Paulo; Instituto Oceanográfico
  • Maria de Los Angeles Gasalla Universidade de São Paulo; Instituto Oceanográfico

DOI:

https://doi.org/10.1590/S1679-87591992000100006

Keywords:

Marine fish, Feeding behaviour, Stomach content, Trophic structure, Interspecific relationships, Rhinobatidae, Rajidae, Squalidae, Ubatuba, Brazil

Abstract

Stomach contents of seven cartilaginous fish species were analysed with the aim to detect trophic groups. Sampling was effectuated between October/85 and July/87 off the coast of Ubatuba (São Paulo, Brazil) in waters up 50 m depth. The relative importance of different components of the diet was expressed as a percentage frequency of occurrence and percentage number. The seven species were grouped in: fish feeders - Squalus cubensis; benthonic crustacean and fish feeders - Raja castelnaui, Raja cyclophora, Raja agassizi; benthonic invertebrate feeders - Rhinobatos horkelii, Zapteryx brevirostris, Psammobatis glansdissimilis.

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Published

1992-01-01

Issue

Vol. 40 No. 1-2 (1992)

Section

Artigos

How to Cite

Throphic groups of demersal fish community from the continental shelf: Ubatuba, Brazil. I. Chrondrichthyes . (1992). Boletim Do Instituto Oceanografico, 40(1-2), 79-85. https://doi.org/10.1590/S1679-87591992000100006