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Abstract:

The preference for relative humidity (RH) and suitability of different levels of this environmental parameter were investigated in the haematophagous bug Triatoma brasiliensis Neiva, 1911 (Hemiptera, Reduviidae). The hygropreference of T. brasiliensis was studied using a RH gradient and the effect of different RHs on the egg hatching, nymph mortality and moulting success was also analysed. The results show that egg hatching in first-instar nymphs of T. brasiliensis was lower at extreme RHs and, particularly, it was lowest at 9.3% RH. The survival of starved nymphs was not affected by RH, but the percentage of engorged nymphs and the ecdysis success of these nymphs once fed was diminished strongly by high humidity. Fourth-instar nymphs preferred to stay at the lowest RH during the first 5 days after feeding and during ecdysis. This preference changed markedly during starvation. Fifteen days after ecdysis, the bugs moved towards intermediate humidities, and 30 days after ecdysis they even preferred the most humid sectors of the gradient. Females preferred to lay eggs in dry environments, suggesting that they may not have a particular hygropreference for oviposition, but that they simply lay their eggs at the RHs where they prefer to stay.

Registro:

Documento: Artículo
Título:The effect of relative humidity on the behaviour and development of Triatoma brasiliensis
Autor:Guarneri, A.A.; Lazzari, C.; Diotaiuti, L.; Lorenzo, M.G.
Filiación:Centro de Pesquisas René Rachou, FIOCRUZ, Belo Horizonte - MG, Brazil
Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
Centro de Pesquisas René Rachou, FIOCRUZ, Av. Augusto de Lima, 1715, CEP 30190-002, Belo Horizonte - MG, Brazil
Palabras clave:Behaviour; Haematophagous; Microclimate; Relative humidity; Triatoma; developmental biology; microclimate; oviposition; preference behavior; relative humidity; Arthropoda; Hemiptera; Heteroptera; Invertebrata; Reduviidae; Triatoma; Triatoma brasiliensis
Año:2002
Volumen:27
Número:2
Página de inicio:142
Página de fin:147
DOI: http://dx.doi.org/10.1046/j.1365-3032.2002.00279.x
Título revista:Physiological Entomology
Título revista abreviado:Physiol.Entomol.
ISSN:03076962
CODEN:PENTD
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_03076962_v27_n2_p142_Guarneri.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03076962_v27_n2_p142_Guarneri

Referencias:

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Citas:

---------- APA ----------
Guarneri, A.A., Lazzari, C., Diotaiuti, L. & Lorenzo, M.G. (2002) . The effect of relative humidity on the behaviour and development of Triatoma brasiliensis. Physiological Entomology, 27(2), 142-147.
http://dx.doi.org/10.1046/j.1365-3032.2002.00279.x
---------- CHICAGO ----------
Guarneri, A.A., Lazzari, C., Diotaiuti, L., Lorenzo, M.G. "The effect of relative humidity on the behaviour and development of Triatoma brasiliensis" . Physiological Entomology 27, no. 2 (2002) : 142-147.
http://dx.doi.org/10.1046/j.1365-3032.2002.00279.x
---------- MLA ----------
Guarneri, A.A., Lazzari, C., Diotaiuti, L., Lorenzo, M.G. "The effect of relative humidity on the behaviour and development of Triatoma brasiliensis" . Physiological Entomology, vol. 27, no. 2, 2002, pp. 142-147.
http://dx.doi.org/10.1046/j.1365-3032.2002.00279.x
---------- VANCOUVER ----------
Guarneri, A.A., Lazzari, C., Diotaiuti, L., Lorenzo, M.G. The effect of relative humidity on the behaviour and development of Triatoma brasiliensis. Physiol.Entomol. 2002;27(2):142-147.
http://dx.doi.org/10.1046/j.1365-3032.2002.00279.x