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Type: Artigo de periódico
Title: Foraging ecology and behaviour of the ponerine ant Ectatomma opaciventre Roger in a Brazilian savannah
Author: Pie, MR
Abstract: This study provides a detailed account of the foraging behaviour of the ponerine ant Ectatomma opaciventre in a 'cerrado' savannah in south-east Brazil. Our observations suggest that this species has an exclusively diurnal foraging pattern. Feeding habits included both predation and scavenging, with termite workers and leaf-cutting ants as the most important food items. Contrary to all other Ectatomma species studied to date, no liquid food such as hemipteran honeydew or plant nectar was collected. Foragers showed clear individual foraging area fidelity. Workers of E. opaciventre employed a typical individual foraging strategy, i.e. there was no co-operation between foragers in the search for or retrieval of food, neither by tandem running nor by trail laying. Nest density was considerably lower than in other Ectatomma (0.015 nests per m(2)). The observed mean distance to the nearest neighbouring nest was 5.85 m, with a significant tendency toward over-dispersion. Nests were more frequently found in specific microhabitats, which may suggest active choice of nesting site by founding queens.
Subject: cerrado
nest density
foraging behaviour
path fidelity
Country: Inglaterra
Editor: Taylor & Francis Ltd
Citation: Journal Of Natural History. Taylor & Francis Ltd, v. 38, n. 6, n. 717, n. 729, 2004.
Rights: fechado
Identifier DOI: 10.1080/0022293021000041699
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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