SciELO - Scientific Electronic Library Online

vol.87 issue4The reproductive capacity of Panstrongylus megistus (Hemiptera: Reduviidae) males treated with precocenesMolecular karyotype analysis and mapping of housekeeping genes to chromosomes of selected species complexes of Leishmania author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Memórias do Instituto Oswaldo Cruz

On-line version ISSN 1678-8060

Mem. Inst. Oswaldo Cruz vol.87 no.4 Rio de Janeiro Oct./Dec. 1992 

Temperature effect upon blood consumption in Triatoma infestans

Silvia Catalá1  , Laura Giojalas1  , Liliana Crocco1 

FCEFN, Centro de Investigaciones Entomológicas de Córdoba y Catédra de Biologia Celular, Córdoba, Argentina


Different blood consumption speed was observed in Triatoma infestans - nymphs and adults - exposed to 12 degrees C and 28 degrees C. Exposure to optimal temperature (28 degrees C) allows the insects to consume blood at a rate of 9% per day. Significative relationship between blood amount present in the promesenteron and consumed blood was found at 28 degrees. Consumption of blood was drastically reduced at the lowest temperature. Accordingly, lack of ovaric development, oviposition and mating behaviour was observed in insects kept at 12 degrees C. Relationship between laboratory and field observations are discussed.


All the contents of this site, except where otherwise noted, is licensed under a Creative Commons Attribution License.