The effect of relative humidity on the behaviour and development of Triatoma brasiliensis

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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 o...

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Autores principales: Guarneri, A.A., Lazzari, C., Diotaiuti, L., Lorenzo, M.G.
Formato: Artículo publishedVersion
Publicado: 2002
Materias:
Behaviour
Haematophagous
Microclimate
Relative humidity
Triatoma
developmental biology
microclimate
oviposition
preference behavior
relative humidity
Arthropoda
Hemiptera
Heteroptera
Invertebrata
Reduviidae
Triatoma brasiliensis
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03076962_v27_n2_p142_Guarneri
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_03076962_v27_n2_p142_Guarneri_oai
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Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires
id I28-R145-paper_03076962_v27_n2_p142_Guarneri_oai
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spelling I28-R145-paper_03076962_v27_n2_p142_Guarneri_oai2020-10-19 Guarneri, A.A. Lazzari, C. Diotaiuti, L. Lorenzo, M.G. 2002 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. Fil:Lazzari, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lorenzo, M.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_03076962_v27_n2_p142_Guarneri info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Physiol.Entomol. 2002;27(2):142-147 Behaviour Haematophagous Microclimate Relative humidity Triatoma developmental biology microclimate oviposition preference behavior relative humidity Arthropoda Hemiptera Heteroptera Invertebrata Reduviidae Triatoma Triatoma brasiliensis The effect of relative humidity on the behaviour and development of Triatoma brasiliensis info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_03076962_v27_n2_p142_Guarneri_oai
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-145
collection Repositorio Digital de la Universidad de Buenos Aires (UBA)
topic Behaviour
Haematophagous
Microclimate
Relative humidity
Triatoma
developmental biology
microclimate
oviposition
preference behavior
relative humidity
Arthropoda
Hemiptera
Heteroptera
Invertebrata
Reduviidae
Triatoma
Triatoma brasiliensis
spellingShingle Behaviour
Haematophagous
Microclimate
Relative humidity
Triatoma
developmental biology
microclimate
oviposition
preference behavior
relative humidity
Arthropoda
Hemiptera
Heteroptera
Invertebrata
Reduviidae
Triatoma
Triatoma brasiliensis
Guarneri, A.A.
Lazzari, C.
Diotaiuti, L.
Lorenzo, M.G.
The effect of relative humidity on the behaviour and development of Triatoma brasiliensis
topic_facet Behaviour
Haematophagous
Microclimate
Relative humidity
Triatoma
developmental biology
microclimate
oviposition
preference behavior
relative humidity
Arthropoda
Hemiptera
Heteroptera
Invertebrata
Reduviidae
Triatoma
Triatoma brasiliensis
description 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.
format Artículo
Artículo
publishedVersion
author Guarneri, A.A.
Lazzari, C.
Diotaiuti, L.
Lorenzo, M.G.
author_facet Guarneri, A.A.
Lazzari, C.
Diotaiuti, L.
Lorenzo, M.G.
author_sort Guarneri, A.A.
title The effect of relative humidity on the behaviour and development of Triatoma brasiliensis
title_short The effect of relative humidity on the behaviour and development of Triatoma brasiliensis
title_full The effect of relative humidity on the behaviour and development of Triatoma brasiliensis
title_fullStr The effect of relative humidity on the behaviour and development of Triatoma brasiliensis
title_full_unstemmed The effect of relative humidity on the behaviour and development of Triatoma brasiliensis
title_sort effect of relative humidity on the behaviour and development of triatoma brasiliensis
publishDate 2002
url http://hdl.handle.net/20.500.12110/paper_03076962_v27_n2_p142_Guarneri
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_03076962_v27_n2_p142_Guarneri_oai
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