Effects of relative humidity on the haematophagous bug Triatoma infestans: Hygropreference and eclosion success

The hygropreference of larvae and adults of the reduviid bug Triatoma infestans (Klug) was investigated along relative humidity (RH) gradients established by means of different salt solutions, as well as by H2SO4 dilutions. Both larvae and adults preferred to remain at or near 0% RH. This preference...

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Autor principal: Roca, M.J
Otros Autores: Lazzari, C.R
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1994
Acceso en línea:Registro en Scopus
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100 1 |a Roca, M.J. 
245 1 0 |a Effects of relative humidity on the haematophagous bug Triatoma infestans: Hygropreference and eclosion success 
260 |c 1994 
270 1 0 |m Lazzari, C.R.; Departamento de Biologia, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina 
506 |2 openaire  |e Política editorial 
504 |a Ampleford, Steel, Circadian control of ecdysis in Rhodnius prolixus (Hemiptera) (1982) J. comp. Physiol. A, 147, pp. 281-286 
504 |a Constantinou, Circadian rhythms in insects (1979) PhD Thesis University of London, p. 270 
504 |a Curto de Casas, Análisis geográfico de la endemia Chagas. Indicadores climáticos (1983) Chagas, 1, pp. 73-79 
504 |a Curto de Casas, Problemática geográfica de la endemia Chagásica y técnicas para su estudio (1985) Factores Biológicos y Ecológicos en la Enfermedad de Chagas, 1 Tomo, pp. 31-47. , Carcavallo, Rabinovich, Tonn, Servico Nacional de Chagas de la República Argentina 
504 |a Guerenstein, Factores condicionantes de la ingestion en dos especies de Triatominae (1992) Diploma Thesis, p. 33. , Univ. Buenos Aires 
504 |a Hanke, Hamdorf, Horn, Schlieper, (1977) Praktikum der Zoophysiologie, , Gustav Fisher Verlag, Stuttgart 
504 |a Lazzari, Temperature preference in Triatoma infestans (Hemiptera: Reduviidae) (1991) Bull. ent. Res., 81, pp. 273-276 
504 |a Lazzari, Circadian rhythm of egg hatching in Triatoma infestans (Hemiptera: Reduviidae) (1991) J. med. Ent., 28, pp. 740-741 
504 |a Lent, Wygodzinsky, Revision of the Triatominae (Hemiptera, Reduviidae), and their significance as vectors of Chagas' disease (1979) Bull. Am. Mus. Nat. Hist., 163, pp. 125-520 
504 |a Luz, Zur Pathogenität von Beauveria bassiana (Fungi imperfecti) gegenüber mehrenen Raubwanzenarten (Reduviidae; Triatominae) und Einfluß der relativen Luftfeuchtigkeit auf die Infektion von Rhodnius prolixus (1989) Diplomarbeit Universität Tübingen, p. 44 
504 |a Núñez, Food source orientation and activity in Rhodnius prolixus Stål (Hemiptera Reduviidae) (1982) Bulletin of Entomological Research, 72, pp. 252-262 
504 |a Núñez, Behavior of Triatominae bugs (1987) Chagas' Disease Vectors, 2, pp. 1-29. , R.R. Brenner, A.M. Stoka, CRC Press, FL 
504 |a Núñez, Lazzari, Rearing of Triatoma infestans Klug (Het Reduviidae) in the absence of a live host I Some factors affecting the artificial feeding (1990) Journal of Applied Entomology, 109, pp. 87-92 
504 |a Núñez, Segura, Rearing of Triatominae (1987) Chagas' Disease Vectors, 2, pp. 31-40. , R.R. Brenner, A.M. Stoka, CRC Press, FL 
504 |a Wiesinger, Die Bedeutung der Umweltfaktoren für den Saugakt von Triatoma infestans (1956) Acta Tropica, 13, pp. 97-141 
504 |a Wigglesworth, Gillett, The function of the antennae in Rhodnius prolixus (Hemiptera) and the mechanism of orientation to the host (1934) J. exp. Biol., 11, pp. 120-138 
504 |a Zeledon, Rabinovich, Chagas' disease an ecological appraisal with special emphasis on its insect vectors (1981) Annual Review of Entomology, 26, pp. 101-133 
520 3 |a The hygropreference of larvae and adults of the reduviid bug Triatoma infestans (Klug) was investigated along relative humidity (RH) gradients established by means of different salt solutions, as well as by H2SO4 dilutions. Both larvae and adults preferred to remain at or near 0% RH. This preference was similar for bugs reared in the laboratory under different conditions, and for those collected in the field. Several assays to control for both experimental asymmetries along the gradient and the effects of thigmotactic behaviour permit exclusion of these factors as responsible for the behaviour of the insects. The preferred RH did not vary with the time of the day or fasting. Larval insects exhibited a significant tendency to remain close to 0% RH at the time of ecdysis. The same preference was exhibited to ovipositing females. The success of ecdysis and egg hatching were measured at different RH values ranging from 0 to 75%. No differences were found between groups; eclosion success ranged from 86 to 94% for egg-hatching and from 89.5 to 95% for ecdysis, at all RHs tested. Results agree with high saturation deficits found along the geographical areas exhibiting the highest prevalence of T. infestans. However, they are in contradiction with values usually recommended to rear this species in the laboratory. The adaptive value of the hygropreference is discussed. © 1994.  |l eng 
593 |a Departamento de Biologia, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina 
690 1 0 |a CHAGAS' DISEASE 
690 1 0 |a ECLOSION 
690 1 0 |a ORIENTATION 
690 1 0 |a RELATIVE HUMIDITY 
690 1 0 |a TRIATOMINAE 
690 1 0 |a TRIATOMA INFESTANS 
700 1 |a Lazzari, C.R. 
773 0 |d 1994  |g v. 40  |h pp. 901-907  |k n. 10  |p J. Insect Physiol.  |x 00221910  |w (AR-BaUEN)CENRE-668  |t Journal of Insect Physiology 
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