Thermal requirements and age-specific life tables of cowpea aphids in cowpea under natural field conditions
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
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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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 |
institution |
IBIO |
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 |
_version_ |
1754193670369705984 |