Temporal change of the aggregation response in Triatoma infestans

Memórias do Instituto Oswaldo Cruz

Alicia Nieves Lorenzo Figueiras¹  Claudio Ricardo Lazzari¹ 

[1] ,Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Ciencias BiológicasBuenos Aires,Argentina

关键词: Triatominae;    Chagas;    aggregation behaviour;    temporal-change;   

DOI  :  10.1590/S0074-02762000000600026

来源: SciELO

【 摘 要 】

Adults and larvae of Triatoma infestans spend daylight hours assembled in shaded places. An assembling factor has been demonstrated in the excrement of this species. We analysed different aspects of the dynamics of the response of bugs. Recently fed insects do not aggregate around faeces. They start to show a significant assembling response from the 8th hour after feeding onwards. Just deposited faeces do not evoke assembling, but a significant rejection instead. This reaction switches 3 h after deposition, when the faeces become attractive to the insects. The attractiveness of faeces persists for about 10 days and can be recovered after this time by rehydration. These findings are discussed in relation to the biological role of faeces and the dynamics of the use of refuges by T. infestans.

【 授权许可】

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