Journal
NEOTROPICAL ICHTHYOLOGY
Volume 6, Issue 1, Pages 109-111Publisher
SOC BRASILEIRA ICTIOLOGIA
DOI: 10.1590/S1679-62252008000100013
Keywords
Aspidoras fuscoguttatus; feeding strategies; interspecific interaction; following behaviour; southeastern Brazil
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Following behaviour among Neotropical stream fishes have been scarcely reported. This type of feeding association was observed in a small stream in the upper rio Parana system between the catfish, Aspidoras fuscoguttatus, acting as a nuclear species, and Knodus moenkhausii, Poecilia reticulata, and Astyanax altiparanae as follower species. Aspidoras fuscoguttatus individuals dug in the bottom during feeding, causing sediment suspension. Their followers picked food items in the cloud of suspended particles. Food items of sediment are no longer consumed by the catfish when in suspension, but are still available for K moenkhausii, P reticulata and A. altiparanae. Following behaviour is an alternative feeding tactic for these species, which reinforces the general idea of behavioural plasticity among follower species.
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