Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions

Detalhes bibliográficos
Autor(a) principal: Girão Filho,José Edmir
Data de Publicação: 2019
Outros Autores: Pádua,Luiz Evaldo de Moura, Portela,Gilson Lages Fortes, Sousa,Francinalva de Morais
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Arquivos do instituto biológico (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572019000100216
Resumo: ABSTRACT: Thermal requirements and life tables of insects are important tools in the ecological management of pests. Thus, this study aimed to construct age-specific life tables for Aphis craccivora at different times of the year and, based on their thermal requirements, predict the occurrence of adults under field conditions. To that end, aphids of known age were kept in cages over cowpea plants at different times of the year - November 2016 and March, April, and June 2017 - at the Agricultural Sciences Center of the Federal University of Piauí. Parameters of development, fertility, and mortality were observed daily, allowing us to construct age-specific life tables, as well as an accumulated degree-day model to predict adult occurrence. The time of year affected the first and second stages of development of the cowpea aphid, the nymphal and reproductive periods, longevity, the biological cycle, the number of nymphs produced per female, the daily production of nymphs per female, life expectancy (ex), and survival (Lx). However, the fertility life tables showed significant differences only in the net reproduction rate (R0). The proposed degree-day model reached an accuracy of one day or more than the observed value, with a maximum error of 12.9%. We concluded that the proposed model is adequate to predict the occurrence of adults in the field and that the population parameters of A. craccivora in cowpea are negatively affected during November and positively affected in June.
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spelling Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditionsAphis craccivoraVigna unguiculatainsect ecologytemperaturethermal constantABSTRACT: Thermal requirements and life tables of insects are important tools in the ecological management of pests. Thus, this study aimed to construct age-specific life tables for Aphis craccivora at different times of the year and, based on their thermal requirements, predict the occurrence of adults under field conditions. To that end, aphids of known age were kept in cages over cowpea plants at different times of the year - November 2016 and March, April, and June 2017 - at the Agricultural Sciences Center of the Federal University of Piauí. Parameters of development, fertility, and mortality were observed daily, allowing us to construct age-specific life tables, as well as an accumulated degree-day model to predict adult occurrence. The time of year affected the first and second stages of development of the cowpea aphid, the nymphal and reproductive periods, longevity, the biological cycle, the number of nymphs produced per female, the daily production of nymphs per female, life expectancy (ex), and survival (Lx). However, the fertility life tables showed significant differences only in the net reproduction rate (R0). The proposed degree-day model reached an accuracy of one day or more than the observed value, with a maximum error of 12.9%. We concluded that the proposed model is adequate to predict the occurrence of adults in the field and that the population parameters of A. craccivora in cowpea are negatively affected during November and positively affected in June.Instituto Biológico2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572019000100216Arquivos do Instituto Biológico v.86 2019reponame:Arquivos do instituto biológico (Online)instname:Instituto Biológico (IB)instacron:IBIO10.1590/1808-1657000502018info:eu-repo/semantics/openAccessGirão Filho,José EdmirPádua,Luiz Evaldo de MouraPortela,Gilson Lages FortesSousa,Francinalva de Moraiseng2019-09-26T00:00:00Zoai:scielo:S1808-16572019000100216Revistahttp://www.biologico.sp.gov.br/arquivos_bio.phphttps://old.scielo.br/oai/scielo-oai.php||arquivos@biologico.sp.gov.br1808-16570020-3653opendoar:2019-09-26T00:00Arquivos do instituto biológico (Online) - Instituto Biológico (IB)false
dc.title.none.fl_str_mv Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions
title Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions
spellingShingle Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions
Girão Filho,José Edmir
Aphis craccivora
Vigna unguiculata
insect ecology
temperature
thermal constant
title_short Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions
title_full Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions
title_fullStr Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions
title_full_unstemmed Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions
title_sort Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions
author Girão Filho,José Edmir
author_facet Girão Filho,José Edmir
Pádua,Luiz Evaldo de Moura
Portela,Gilson Lages Fortes
Sousa,Francinalva de Morais
author_role author
author2 Pádua,Luiz Evaldo de Moura
Portela,Gilson Lages Fortes
Sousa,Francinalva de Morais
author2_role author
author
author
dc.contributor.author.fl_str_mv Girão Filho,José Edmir
Pádua,Luiz Evaldo de Moura
Portela,Gilson Lages Fortes
Sousa,Francinalva de Morais
dc.subject.por.fl_str_mv Aphis craccivora
Vigna unguiculata
insect ecology
temperature
thermal constant
topic Aphis craccivora
Vigna unguiculata
insect ecology
temperature
thermal constant
description ABSTRACT: Thermal requirements and life tables of insects are important tools in the ecological management of pests. Thus, this study aimed to construct age-specific life tables for Aphis craccivora at different times of the year and, based on their thermal requirements, predict the occurrence of adults under field conditions. To that end, aphids of known age were kept in cages over cowpea plants at different times of the year - November 2016 and March, April, and June 2017 - at the Agricultural Sciences Center of the Federal University of Piauí. Parameters of development, fertility, and mortality were observed daily, allowing us to construct age-specific life tables, as well as an accumulated degree-day model to predict adult occurrence. The time of year affected the first and second stages of development of the cowpea aphid, the nymphal and reproductive periods, longevity, the biological cycle, the number of nymphs produced per female, the daily production of nymphs per female, life expectancy (ex), and survival (Lx). However, the fertility life tables showed significant differences only in the net reproduction rate (R0). The proposed degree-day model reached an accuracy of one day or more than the observed value, with a maximum error of 12.9%. We concluded that the proposed model is adequate to predict the occurrence of adults in the field and that the population parameters of A. craccivora in cowpea are negatively affected during November and positively affected in June.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-01
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=S1808-16572019000100216
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572019000100216
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1808-1657000502018
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 Instituto Biológico
publisher.none.fl_str_mv Instituto Biológico
dc.source.none.fl_str_mv Arquivos do Instituto Biológico v.86 2019
reponame:Arquivos do instituto biológico (Online)
instname:Instituto Biológico (IB)
instacron:IBIO
instname_str Instituto Biológico (IB)
instacron_str IBIO
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reponame_str Arquivos do instituto biológico (Online)
collection Arquivos do instituto biológico (Online)
repository.name.fl_str_mv Arquivos do instituto biológico (Online) - Instituto Biológico (IB)
repository.mail.fl_str_mv ||arquivos@biologico.sp.gov.br
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