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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 107, No. 5, 2012, pp. 659-663
Bioline Code: oc12106
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 107, No. 5, 2012, pp. 659-663

 en The biology of three Mexican-American species of Triatominae (Hemiptera: Reduviidae): Triatoma recurva check for this species in other resources , Triatoma protracta check for this species in other resources and Triatoma rubida check for this species in other resources
Martínez-Ibarra, José Alejandro; Paredes-González, Edgar; Licón-Trillo, Ángel-; Montañez-Valdez, Oziel Dante; Rocha-Chávez, Gonzalo & Nogueda-Torres, Benjamín

Abstract

The values of biological parameters related to hatching, lifespan, the number of blood meals between moults, mortality, time lapse before the beginning of feeding, feeding time and defecation delay for each instar of three Mexican-American species of Triatominae, Triatoma recurva check for this species in other resources , Triatoma protracta check for this species in other resources (former subspecies protracta) and Triatoma rubida check for this species in other resources (former subspecies uhleri), were evaluated and compared. No significant (p > 0.05) differences were recorded among the three species with respect to the average time required to hatch. This time was approximately 19 days. The average egg-to-adult development time was significantly (p < 0.05) shorter for T. rubida. The number of blood meals at each nymphal instar varied from one-five for each species. The mortality rates were higher for the first-instar nymphs of the three species studied. The mean time lapse before the beginning of feeding was between 0.3-3 min for most nymphs of all instars of each species studied. The mean feeding time was the longest for T. recurva, followed by T. protracta. The defecation delay was less than 10 min for T. recurva and T. rubida. Given these results, only T. rubida should be considered an important potential vector of Trypanosoma cruzi check for this species in other resources transmission to humans in areas of Mexico where these species exist, whereas T. recurva and T. protracta would be of secondary importance.

Keywords
North America - triatomines - biology - laboratory conditions

 
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