Behavioural and chemical studies of discrimination processes in the leaf-cutting ant Acromyrmex laticeps nigrosetosus (Forel, 1908)

Brazilian Journal of Biology

D. J. Souza²  T. M. C. Della Lucia²  C. Errard¹  F-j. Richard¹  E. R. Lima² 

[1] ,Universidade Federal de Viçosa Departamento de Biologia Animal Viçosa MG ,Brazil

关键词: leaf-cutting ants;    intraspecific aggressiveness;    chemical profiles;    brood discrimination;    fungus discrimination;    formigas cortadeiras;    agressividade intraespecífica;    perfis químicos;    discriminação de prole;    discriminação de fungo;   

DOI  :  10.1590/S1519-69842006000500012

来源: SciELO

【 摘 要 】

Leaf-cutting ants live in symbiosis with a basidiomycete fungus that is exploited as a source of nutrients for ant larvae. Tests of brood transport revealed that Acromyrmex laticeps nigrosetosus workers did not discriminate a concolonial brood from an alien brood. The same result was observed with tests of fungus transport. Adult workers showed no aggressive behaviour to workers from other alien colonies (non-nestmates). There was no qualitative variation in the chemical profiles of larvae, pupae and adult workers from the different colonies. However, quantitative differences were observed between the different colonies. Hypotheses about the lack of intraspecific aggression in this subspecies of ants are discussed.

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