Winter survival of immature instars of Mansonia indubitans Dyar & Shannon and Mansonia titillans Walker (Diptera: Culicidae), in Buenos Aires, Argentina

Memórias do Instituto Oswaldo Cruz

Juan P Torretta²  Pablo R Mulieri¹  Luciano D Patitucci¹  Valeria A Sander¹  Patricia L Rodríguez¹  Nicolás Schweigmann¹ 

[1] ,Facultad de Agronomía Cátedra de Botánica Agrícola

关键词: Mansonia indubitans;    Mansonia titillans;    Pistia stratiotes;    winter survival;    plant;    animal interaction;   

DOI  :  10.1590/S0074-02762006000600003

来源: SciELO

【 摘 要 】

We conducted a whole year research on the ecology of Mansonia indubitans and Ma. titillans in Macáes Pond, Costanera Sur Reserve, Buenos Aires, Argentina. The usage of different floating plants by immature instars and their overwintering was analized. The percentage of usage of the available floating macrophytes (Pistia, Limnobium, and Salvinia) by the larvae and pupae was studied. Also, we defined positivity (P+) as the percentage of plants with immature instars for each plant genus on a monthly basis. Ma. immature instars were captured throughout the year and Pistia was the resource most commonly exploited by the mosquitoes. The percentage of fourth-instar larvae and pupae on Pistia roots with respect to total immature instars captured was assessed on a monthly and seasonal basis. The proportion of fourth-instar larvae and pupae from both species of Mansonia on water lettuce roots, showed significant differences between months and seasons. Our results suggest that the populations of Ma. indubitans and Ma. titillans in Macáes Pond, survive during winter mainly as fourth-instar larvae.

【 授权许可】

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