Preliminary Studies on Temperature Selection and Activity Cycles of Triatoma infestans and T. spinolai (Heteroptera: Reduviidae), Chilean Vectors of Chagas' Disease
Author
dc.contributor.author
Canals Lambarri, Mauricio
Author
dc.contributor.author
Solís Muñoz, Rigoberto
Author
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Valderas, Julio
Author
dc.contributor.author
Ehrenfeld, Mildred
Author
dc.contributor.author
Cattan Ayala, Pedro
Admission date
dc.date.accessioned
2019-01-29T15:54:52Z
Available date
dc.date.available
2019-01-29T15:54:52Z
Publication date
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1997
Cita de ítem
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Journal of Medical Entomology, Volumen 34, Issue 1, 2018, Pages 11-17
Identifier
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00222585
Identifier
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10.1093/jmedent/34.1.11
Identifier
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https://repositorio.uchile.cl/handle/2250/162725
Abstract
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Preferred temperature and activity patterns of Triatoma infestans Klug and Triatoma spinolai Porter were studied, both are vectors of Chagas' disease in Chile. In the laboratory, 24 T. spinolai and 18 T. infestans were exposed to a temperature gradient between 50 and 15°C and a photoperiod of 14:10 (L:D) h. Temperature and hourly position of bugs in an experimental chamber were recorded for 24 h. Both species showed a cycle of preferred temperature, and both selected higher temperatures beginning at 1600 hours, although T. infestans maintains this preference over a longer period. For both species, activity patterns were synchronized with the light-dark cycle, although these activity rhythms were significantly different. T. spinolai had higher activity during the photophase, and T. infestans showed a lower activity in the photophase and a higher one during the scotophase. The similar pattern of preferred temperatures may facilitate the selection of similar environments in the event of c
Preliminary Studies on Temperature Selection and Activity Cycles of Triatoma infestans and T. spinolai (Heteroptera: Reduviidae), Chilean Vectors of Chagas' Disease