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Acta Amazonica

Print version ISSN 0044-5967On-line version ISSN 1809-4392

Acta Amaz. vol.31 no.1 Manaus Mar. 2001

http://dx.doi.org/10.1590/1809-43922001311157 

Notas e Comunicações

Ants monopolise plant resources by shelter-construction

Formigas monopolizam recursos através da construção de abrigos

Louise I. ESKILDSEN1 

Annika Büchert LINDBERG1 

Jens M. OLESEN1 

1Dept. Ecology & Genetics, Univ. Aarhus, Ny Munkegade Block 540, DK-8000 Aarhus, Denmark e-mail: louise.eskildsen@biology.au.dk

ABSTRACT

In Ecuadorean Amazonas, Crematogaster ants (Myrmicinae) were observed to construct shelters of debris and plant trichomes covering and hiding extrafloral nectaries of Passiflora auriculata vines. This is seen as an advanced way of excluding competing ants from a food source.

Key words: Amazonas; Crematogaster; Extrafloral nectaries; Mutualism; Passiflora

RESUMO

Na Amazônia Equatoriana, observou-se que formigas do gênero Crematogaster (Myrmicianae) utilizam detritos e tricomas das plantas para construir abrigos, de modo a cobrir e esconder os nectários extraflorais de Passiflora auriculata, uma planta trepadeira. Este comportamento é visto como uma maneira avançada de excluir outras formigas competidoras dos recursos alimentares (néctar) produzido pela planta.

Palavras-Chave: Amazonas; Crematogaster; Nectários extraflorais; mutualismo; Passiflora

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