Life Tables and Reproductive Parameters of Lutzomyia spinicrassa (Diptera: Psychodidae) under Laboratory Conditions

• Published in: Memórias do Instituto Oswaldo Cruz Vol. 99; no. 6; pp. 603 - 607
• Main Authors: Escovar, Jesús, Bello, Felio J, Morales, Alberto, Moncada, Ligia, Cárdenas, Estrella
• Format: Journal Article
• Language: English
• Published: Brazil Fundação Oswaldo Cruz, Fiocruz 01.10.2004; Instituto Oswaldo Cruz, Ministério da Saúde; Fundação Oswaldo Cruz (FIOCRUZ)
• Subjects: Animals; Animals, Laboratory; Female; heritability; Insect Vectors - growth & development; Insect Vectors - physiology; life cycle; Life Cycle Stages - physiology; Life Tables; Lutzomyia spinicrassa; Male; PARASITOLOGY; population; population - heritability; Population Dynamics; Psychodidae - growth & development; Psychodidae - physiology; Quantitative Trait, Heritable; reproduction; Reproduction - physiology; TROPICAL MEDICINE; life cycle; Lutzomyia spinicrassa; reproduction; population; heritability
• ISSN: 1678-8060; 0074-0276; 0074-0276; 1678-8060
• DOI: 10.1590/S0074-02762004000600012

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.