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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Seasonal Patterns in Activity Rhythm and Foraging Ecology in the Neotropical Forest-Dwelling Ant, Odontomachus chelifer (Formicidae: Ponerinae)

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Autor(es):
Raimundo, Rafael L. G. [1] ; Freitas, Andre V. L. [1] ; Oliveira, Paulo S. [1]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Dept Biol Anim, BR-13083862 Campinas, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Annals of the Entomological Society of America; v. 102, n. 6, p. 1151-1157, NOV 2009.
Citações Web of Science: 24
Resumo

We provide qualitative and quantitative data on the natural history and foraging behavior of the ground-dwelling ant Odontomachus chelifer (Latreille) (Formicidae: Ponerinae) ill a forest reserve in southeastern Brazil, with emphasis on colony activity rhythms and diet preferences in relation to seasonal availability of potential food items in the leaf litter. Ant colonies exhibited nocturnal activity throughout the year, and they foraged significantly more intensively in the wet/warm (November-March) than in the cold/dry season (April-October). As the night begins, small groups of workers disperse and hunt individually on a wide diversity of litter arthropods of variable sizes. At dusk, encounters with foragers of the diurnal ponerine Pachycondyla striata Fr. Smith were conspicuously avoided by O.chelifer, which occasionally had their prey robbed by the former or were even taken as prey themselves. Termites were the preferred prey of O. chelifer, making up 40% of the food items captured in each season. Seasonal comparisons of prey organisms captured by O. chelifer, and of litter-dwelling arthropods sampled in pitfall traps, revealed that the frequency distribution Of retrieved prey in each taxonomic group did not differ seasonally, despite the 2.7-fold increase in the overall availability of litter arthropods in the warm/wet period. This result supports foraging theory by showing that preference for certain animal prey types (i.e., taxonomic groups) persists through time despite seasonal fluctuations in the overall availability of potential prey oil the forest floor. This study points out to the importance of studying ant foraging ecology and diet preferences in a natural context. (AU)

Processo FAPESP: 99/06919-7 - História natural e ecologia do forrageamento da formiga Odontomachus chelifer (Latreille) (Formicidae: Ponerinae)
Beneficiário:Rafael Luís Galdini Raimundo
Linha de fomento: Bolsas no Brasil - Iniciação Científica
Processo FAPESP: 98/05101-8 - Lepidoptera do Estado de São Paulo: diversidade, distribuição de recursos e uso para análise e monitoramento ambiental
Beneficiário:Keith Spalding Brown Junior
Linha de fomento: Auxílio à Pesquisa - Programa BIOTA - Temático
Processo FAPESP: 00/01484-1 - Borboletas como indicadores ambientais: monitoramento com Nymphalidae (Eurytelinae e Satyrinae)
Beneficiário:André Victor Lucci Freitas
Linha de fomento: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 08/54058-1 - Ecologia e comportamento de formigas neotropicais
Beneficiário:Paulo Sergio Moreira Carvalho de Oliveira
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 04/05269-9 - Borboletas da Mata Atlântica: biogeografia e sistemática como ferramentas de conservação de biodiversidade
Beneficiário:André Victor Lucci Freitas
Linha de fomento: Auxílio à Pesquisa - Apoio a Jovens Pesquisadores