Data/hora: 23/06/2024 01:41:27

Biblioteca(s): | Embrapa Pantanal.
Data corrente: | 11/09/1997
Data da última atualização: | 11/09/1997
Autoria: | SAZIMA, I.; MACHADO, F. A.
Afiliação: | Universidade Estadual de Campinas. Departamento de Zoologia (Campinas, SP); Universidade Federal de Mato Grosso. Departamento de Biologia (Cuiaba, MT).
Título: | Underwater observations of piranhas in western Brazil.
Ano de publicação: | 1990
Fonte/Imprenta: | Environmental Biology of Fishes, Dordrecht, v.28, n.1/4, p.17-31, aug., 1990.
Idioma: | Inglês
Conteúdo: | The behaviour of three piranha species, Serraslamus marginatus, S. spilopleura, and Pygocentrus nattereri, and their prey fishes was studied underwater in the Pantanal region, Mato Grosso, Brazil. General habits, predatory tactics, feeding behaviour, and social interactions while foraging, as well as defensive tactics of prey fishes were observed. S. marginatus is solitary whereas the other two species live in shoals; their agonistic behaviour varies accordingly, the simplest being displayed by the solitary species. Predatory tactics and feeding behaviour also vary: S. spilopleura shows the most varied diet and highly opportunistic feeding strategy, which includes aggressive mimicry. The solitary S. marginatus, besides fin and scale-eating, occasionally cleans larger individuals of P.nattereri. Several cichlid species display defensive tactics clearly related to piranha attacks: tail protecting, watching, and confronting the predator are the most commonly observed behaviours. Piranhas seem to strongly influence use of habitat, social structure, and foraging mode of the fish communities.
Palavras-Chave: | Anti-predatory behaviour; Biology; Comportamento anti-predatorio; Fin and scale-eating; Predacao; Predatory tactics; Prey fish; Social interactions.
Thesagro: | Biologia; Ecologia; Meio Ambiente; Peixe; Piranha.
Thesaurus Nal: | Characiformes; Cichlidae; cleaning; ecology; environment; fish; Pantanal; predation; Pygocentrus; Serrasalmus.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (34813-1) - ADC - AP - -- - AP597.072 -  - 597.072 - DIS