Life tables and reproductive parameters of Lutzomyia spinicrassa (Diptera: Psychodidae) under laboratory conditions

Memórias do Instituto Oswaldo Cruz

Jesús Escovar²  Felio J Bello²  Alberto Morales²  Ligia Moncada¹  Estrella Cárdenas² 

[1] ,Universidad de La Salle Departamento de Ciencias Básicas Laboratorio de Entomología, Biología Celular y GenéticaBogotá DC ,Colombia

关键词: Lutzomyia spinicrassa;    life cycle;    reproduction;    population;    heritability;   

DOI  :  10.1590/S0074-02762004000600012

来源: SciELO

【 摘 要 】

Lutzomyia spinicrassa is a vector of Leishmania braziliensis in Colombia. This sand fly has a broad geographical distribution in Colombia and Venezuela and it is found mainly in coffee plantations. Baseline biological growth data of L. spinicrassa were obtained under experimental laboratory conditions. The development time from egg to adult ranged from 59 to 121 days, with 12.74 weeks in average. Based on cohorts of 100 females, horizontal life table was constructed. The following predictive parameters were obtained: net rate of reproduction (8.4 females per cohort female), generation time (12.74 weeks), intrinsic rate of population increase (0.17), and finite rate of population increment (1.18). The reproductive value for each class age of the cohort females was calculated. Vertical life tables were elaborated and mortality was described for the generation obtained of the field cohort. In addition, for two successive generations, additive variance and heritability for fecundity were estimated.

【 授权许可】

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