Impact of small variations in temperature and humidity on the reproductive activity and survival of Aedes aegypti (Diptera, Culicidae)
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista brasileira de entomologia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000300021 |
Resumo: | In short space of time increase in temperature and rainfall can affect vector populations and, consequently, the diseases for them transmitted. The present study analyzed the effect of small temperature and humidity variations on the fecundity, fertility and survival of Aedes aegypti. These parameters were analyzed using individual females at temperatures ranging from 23 to 27 °C (mean 25 °C); 28 to 32 °C (mean 30 °C) and 33 to 37 °C (mean 35 ºC) associated to 60±8% and 80±6% relative humidity. Females responded to an increase in temperature by reducing egg production, oviposition time and changing oviposition patterns. At 25 ºC and 80% relative humidity, females survived two-fold more and produced 40% more eggs when compared to those kept at 35 ºC and 80% relative humidity. However, in 45% of females kept at 35 ºC and 60% relative humidity oviposition was inhibited and only 15% females laid more than 100 eggs, suggesting that the intensity of the temperature effect was influenced by humidity. Gradual reductions in egg fertility at 60% relative humidity were observed with the increase in temperature, although such effect was not found in the 80% relative humidity at 25 º C and 30 º C. These results suggest that the reduction in population densities recorded in tropical areas during seasons when temperatures reach over 35 ºC is likely to be strongly influenced by temperature and humidity, with a negative effect on several aspects of mosquito biology. |
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Impact of small variations in temperature and humidity on the reproductive activity and survival of Aedes aegypti (Diptera, Culicidae)Climate changesdenguefecundityfertilitymosquitoIn short space of time increase in temperature and rainfall can affect vector populations and, consequently, the diseases for them transmitted. The present study analyzed the effect of small temperature and humidity variations on the fecundity, fertility and survival of Aedes aegypti. These parameters were analyzed using individual females at temperatures ranging from 23 to 27 °C (mean 25 °C); 28 to 32 °C (mean 30 °C) and 33 to 37 °C (mean 35 ºC) associated to 60±8% and 80±6% relative humidity. Females responded to an increase in temperature by reducing egg production, oviposition time and changing oviposition patterns. At 25 ºC and 80% relative humidity, females survived two-fold more and produced 40% more eggs when compared to those kept at 35 ºC and 80% relative humidity. However, in 45% of females kept at 35 ºC and 60% relative humidity oviposition was inhibited and only 15% females laid more than 100 eggs, suggesting that the intensity of the temperature effect was influenced by humidity. Gradual reductions in egg fertility at 60% relative humidity were observed with the increase in temperature, although such effect was not found in the 80% relative humidity at 25 º C and 30 º C. These results suggest that the reduction in population densities recorded in tropical areas during seasons when temperatures reach over 35 ºC is likely to be strongly influenced by temperature and humidity, with a negative effect on several aspects of mosquito biology.Sociedade Brasileira De Entomologia2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000300021Revista Brasileira de Entomologia v.54 n.3 2010reponame:Revista brasileira de entomologia (Online)instname:Sociedade Brasileira De Entomologia (SBE)instacron:SBE10.1590/S0085-56262010000300021info:eu-repo/semantics/openAccessCosta,Ethiene Arruda Pedrosa de AlmeidaSantos,Eloína Maria de MendonçaCorreia,Juliana CavalcantiAlbuquerque,Cleide Maria Ribeiro deeng2010-11-11T00:00:00Zoai:scielo:S0085-56262010000300021Revistahttp://www.rbentomologia.com/https://old.scielo.br/oai/scielo-oai.php||sbe@ufpr.br1806-96650085-5626opendoar:2010-11-11T00:00Revista brasileira de entomologia (Online) - Sociedade Brasileira De Entomologia (SBE)false |
dc.title.none.fl_str_mv |
Impact of small variations in temperature and humidity on the reproductive activity and survival of Aedes aegypti (Diptera, Culicidae) |
title |
Impact of small variations in temperature and humidity on the reproductive activity and survival of Aedes aegypti (Diptera, Culicidae) |
spellingShingle |
Impact of small variations in temperature and humidity on the reproductive activity and survival of Aedes aegypti (Diptera, Culicidae) Costa,Ethiene Arruda Pedrosa de Almeida Climate changes dengue fecundity fertility mosquito |
title_short |
Impact of small variations in temperature and humidity on the reproductive activity and survival of Aedes aegypti (Diptera, Culicidae) |
title_full |
Impact of small variations in temperature and humidity on the reproductive activity and survival of Aedes aegypti (Diptera, Culicidae) |
title_fullStr |
Impact of small variations in temperature and humidity on the reproductive activity and survival of Aedes aegypti (Diptera, Culicidae) |
title_full_unstemmed |
Impact of small variations in temperature and humidity on the reproductive activity and survival of Aedes aegypti (Diptera, Culicidae) |
title_sort |
Impact of small variations in temperature and humidity on the reproductive activity and survival of Aedes aegypti (Diptera, Culicidae) |
author |
Costa,Ethiene Arruda Pedrosa de Almeida |
author_facet |
Costa,Ethiene Arruda Pedrosa de Almeida Santos,Eloína Maria de Mendonça Correia,Juliana Cavalcanti Albuquerque,Cleide Maria Ribeiro de |
author_role |
author |
author2 |
Santos,Eloína Maria de Mendonça Correia,Juliana Cavalcanti Albuquerque,Cleide Maria Ribeiro de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Costa,Ethiene Arruda Pedrosa de Almeida Santos,Eloína Maria de Mendonça Correia,Juliana Cavalcanti Albuquerque,Cleide Maria Ribeiro de |
dc.subject.por.fl_str_mv |
Climate changes dengue fecundity fertility mosquito |
topic |
Climate changes dengue fecundity fertility mosquito |
description |
In short space of time increase in temperature and rainfall can affect vector populations and, consequently, the diseases for them transmitted. The present study analyzed the effect of small temperature and humidity variations on the fecundity, fertility and survival of Aedes aegypti. These parameters were analyzed using individual females at temperatures ranging from 23 to 27 °C (mean 25 °C); 28 to 32 °C (mean 30 °C) and 33 to 37 °C (mean 35 ºC) associated to 60±8% and 80±6% relative humidity. Females responded to an increase in temperature by reducing egg production, oviposition time and changing oviposition patterns. At 25 ºC and 80% relative humidity, females survived two-fold more and produced 40% more eggs when compared to those kept at 35 ºC and 80% relative humidity. However, in 45% of females kept at 35 ºC and 60% relative humidity oviposition was inhibited and only 15% females laid more than 100 eggs, suggesting that the intensity of the temperature effect was influenced by humidity. Gradual reductions in egg fertility at 60% relative humidity were observed with the increase in temperature, although such effect was not found in the 80% relative humidity at 25 º C and 30 º C. These results suggest that the reduction in population densities recorded in tropical areas during seasons when temperatures reach over 35 ºC is likely to be strongly influenced by temperature and humidity, with a negative effect on several aspects of mosquito biology. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000300021 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000300021 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0085-56262010000300021 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira De Entomologia |
publisher.none.fl_str_mv |
Sociedade Brasileira De Entomologia |
dc.source.none.fl_str_mv |
Revista Brasileira de Entomologia v.54 n.3 2010 reponame:Revista brasileira de entomologia (Online) instname:Sociedade Brasileira De Entomologia (SBE) instacron:SBE |
instname_str |
Sociedade Brasileira De Entomologia (SBE) |
instacron_str |
SBE |
institution |
SBE |
reponame_str |
Revista brasileira de entomologia (Online) |
collection |
Revista brasileira de entomologia (Online) |
repository.name.fl_str_mv |
Revista brasileira de entomologia (Online) - Sociedade Brasileira De Entomologia (SBE) |
repository.mail.fl_str_mv |
||sbe@ufpr.br |
_version_ |
1752126458351845376 |