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Evidence for seed dispersal by the catfish Auchenipterichthys longimanus in an Amazonian lake

Published online by Cambridge University Press:  06 February 2003

Simone Mannheimer ,
Gabriela Bevilacqua ,
Érica P. Caramaschi  and
Fábio Rubio Scarano
Simone Mannheimer
Affiliation:
Universidade Federal do Rio de Janeiro, Departamento de Ecologia, IB, CCS, Ilha do Fundão, 21941-970, Rio de Janeiro RJ, Brazil
Gabriela Bevilacqua
Affiliation:
Universidade Federal do Rio de Janeiro, Departamento de Ecologia, IB, CCS, Ilha do Fundão, 21941-970, Rio de Janeiro RJ, Brazil
Érica P. Caramaschi
Affiliation:
Universidade Federal do Rio de Janeiro, Departamento de Ecologia, IB, CCS, Ilha do Fundão, 21941-970, Rio de Janeiro RJ, Brazil
Fábio Rubio Scarano
Affiliation:
Universidade Federal do Rio de Janeiro, Departamento de Ecologia, IB, CCS, Ilha do Fundão, 21941-970, Rio de Janeiro RJ, Brazil
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Abstract

The annual flood pulses of central Amazonian rivers inundate marginal forests to 10 m depth or more (Furch & Otto 1987, Junk et al. 1989). The regularity of this flooding seems to have promoted the development of a complex relationship between forest plants and fishes that consume their seeds (Goulding 1980). Several fish species migrate into the flooded forests to feed on buoyant fruits and seeds, and many plant species reach their fruiting peak during the flood season. Fruits and seeds have been reported to have adaptive features related to water (hydrochory) and/or fish (ichthyochory) dispersal (Araújo-Lima & Goulding 1998, Gottsberger 1978, Goulding 1980, Kubitzki & Ziburski 1994, Scarano 1998, Williamson 1999, Williamson & Costa 2000). Strong multicuspidate teeth in frugivorous fishes, fruit/seed buoyancy (Goulding 1980) and chemical signs released by fallen fruit to attract fish (Araújo-Lima & Goulding 1998) are mechanisms for the seed dispersal of the flooded forest community.

Keywords

AuchenipteridaeBrazilfeeding ecologyfrugivorygerminationichthyochory
Type
Brief Report
Information
Journal of Tropical Ecology , Volume 19 , Issue 2 , March 2003 , pp. 215 - 218
Copyright
2003 Cambridge University Press

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