Winter biology of Culex pipiens quinquefasciatus say, (Diptera: Culicidae) from Córdoba, Argentina

Memórias do Instituto Oswaldo Cruz

Walter R Almirón¹  Mireya E Brewer¹ 

[1] ,Universidad Nacional de Córdoba Facultad de Ciencias Exactas, Físicas y Naturales Centro de Investigaciones Entomológicas de CórdobaCórdoba,Argentina

关键词: Culex pipiens quinquefasciatus;    Culicidae;    winter biology;    survival;    developmental duration;    developmental threshold;   

DOI  :  10.1590/S0074-02761996000500019

来源: SciELO

【 摘 要 】

Adult cohorts and immature stages were kept under field conditions during the autumn and winter of three consecutive years. Survival, oviposition and development time from egg to adult were considered. The adult cohorts were studied under three experimental conditions: unfed cohorts, cohorts fed with sugar solution ansd cohorts fed with both sugar solution and blood (chicken). Female longevity showed significant differences among the three treatments. Females of unfed cohorts lived up to three weeks; females fed with sugar solution survived until six weeks, while those fed both with sugar and blood lived at most fourteen weeks; after the blood intake eggs were laid. In the immature stages, the highest relative mortality rates occurred during the egg and larval stages. Total pre-adult mortality varied between 59.09 and 89.71%. The developmental duration from egg to adult was between 43-62 days; there were no differences among results obtained for the three years.

【 授权许可】

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