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Revista de Saúde Pública

Print version ISSN 0034-8910

Abstract

RODRIGUES, Vera Lúcia C.C.; MELLO, Maria Luiza S.; FERRAZ FILHO, Antenor N.  and  DANTAS, Marly M.. Survival and molting occurrence in Triatoma infestans Klug (Hemiptera, Reduviidae) after temperature shocks. Rev. Saúde Pública [online]. 1991, vol.25, n.6, pp. 461-467. ISSN 0034-8910.  http://dx.doi.org/10.1590/S0034-89101991000600007.

Survival and molting occurrence were studied in specimens of Triatoma infestans over 30 days after temperature shocks. Hyperthermal and hypotermal shocks could be found to affect both survival and molting incidence as a function of temperature and period of the developement phase and sex of the specimens. Considering the various test conditions, the shock at 0°C for 12 h was found to elicit the most deleterious effect, whereas shocks at 40°C and 0°C even for 1 h are interpreted as affecting the hormonal balance which controls molting. Cases of a rise in post-shock survival are suggested to have been favored by heat-shock protein action.

Keywords : Triatoma [growth and development]; Hypothermic, induced; Hyperthermic, induced; Survival.

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