Biology of telenomus pachycoris (Hymenoptera: Scelionidae), a parasitoid of eggs of pachycoris torridus (Hemiptera: Scutelleridae): The effects of egg age, exposure time, and temperature
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1653/024.100.0238 http://hdl.handle.net/11449/220872 |
Resumo: | Telenomus pachycoris (Johnson) (Hymenoptera: Scelionidae) is a parasitoid of eggs of Pachycoris torridus (Scopoli) (Hemiptera: Scutelleridae), a main pest of physic nut (Jatropha curcas L.; Euphorbiaceae). The objective of this work was to know the biology of T. pachycoris in P. torridus eggs under various conditions in order to develop a rearing technique for this parasitoid in the laboratory. We offered eggs of P. torridus to T. pachycoris during 4 exposition periods (6, 12, 18, and 24 h), as well as eggs of different ages (1 to 11 d), to evaluate, in both experiments, the number of parasitized eggs, duration of the egg-to-adult period, percentage of emergence, and sex ratio. We also evaluated the effect of constant temperatures (18, 20, 22, 25, 28, and 30 °C) and determined the duration of the egg-to-adult period, percentage of emergence, and sex ratio and estimated the thermal requirements and the number of generations per yr of T. pachycoris at each temperature. Parasitism of eggs was the highest at 12 h of exposure. Eggs up to 3 d old were the most parasitized, and the parasitism was zero on day 11. The duration of the egg-to-adult period was inversely proportional to temperature, ranging from 33.6 d at 18 °C to 9.8 d at 30 °C. The threshold temperature estimated for T. pachycoris was 12.9 °C, and the estimated thermal constant was 163.9 degree-days. The number of generations of T. pachycoris ranged from 11.3 to 38.1 per yr at 18 and 30 °C, respectively. The results may contribute to developing techniques for rearing T. pachycoris in the laboratory. |
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Biology of telenomus pachycoris (Hymenoptera: Scelionidae), a parasitoid of eggs of pachycoris torridus (Hemiptera: Scutelleridae): The effects of egg age, exposure time, and temperaturebiological controlparasitismphysic nutrearing techniquetemperature requirementTelenomus pachycoris (Johnson) (Hymenoptera: Scelionidae) is a parasitoid of eggs of Pachycoris torridus (Scopoli) (Hemiptera: Scutelleridae), a main pest of physic nut (Jatropha curcas L.; Euphorbiaceae). The objective of this work was to know the biology of T. pachycoris in P. torridus eggs under various conditions in order to develop a rearing technique for this parasitoid in the laboratory. We offered eggs of P. torridus to T. pachycoris during 4 exposition periods (6, 12, 18, and 24 h), as well as eggs of different ages (1 to 11 d), to evaluate, in both experiments, the number of parasitized eggs, duration of the egg-to-adult period, percentage of emergence, and sex ratio. We also evaluated the effect of constant temperatures (18, 20, 22, 25, 28, and 30 °C) and determined the duration of the egg-to-adult period, percentage of emergence, and sex ratio and estimated the thermal requirements and the number of generations per yr of T. pachycoris at each temperature. Parasitism of eggs was the highest at 12 h of exposure. Eggs up to 3 d old were the most parasitized, and the parasitism was zero on day 11. The duration of the egg-to-adult period was inversely proportional to temperature, ranging from 33.6 d at 18 °C to 9.8 d at 30 °C. The threshold temperature estimated for T. pachycoris was 12.9 °C, and the estimated thermal constant was 163.9 degree-days. The number of generations of T. pachycoris ranged from 11.3 to 38.1 per yr at 18 and 30 °C, respectively. The results may contribute to developing techniques for rearing T. pachycoris in the laboratory.Faculdade de Agronomia Eliseu Maciel Universidade Federal de Pelotas, Cx. Postal 354Embrapa Clima Temperado, Rodovia Br 396, km 78 Cx. Postal 403Centro de Ciências Agrárias Universidade Federal do Espírito Santo, Cx. Postal 16Faculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista Júlio de Mesquita, Via de Acesso Paulo Donato Castellane s/nDivisión Entomologia Museo de La Plata, Paseo del Bosque s/nFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista Júlio de Mesquita, Via de Acesso Paulo Donato Castellane s/nUniversidade Federal de PelotasEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Universidade Federal do Espírito Santo (UFES)Universidade Estadual Paulista (UNESP)Museo de La PlataFilho, Raul Da Cunha BorgesNava, Dori E.Pratissoli, DirceuPolanczyk, Ricardo A. [UNESP]Marangon, Ricardo B.Loiácono, Marta2022-04-28T19:06:23Z2022-04-28T19:06:23Z2017-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article375-379http://dx.doi.org/10.1653/024.100.0238Florida Entomologist, v. 100, n. 2, p. 375-379, 2017.0015-4040http://hdl.handle.net/11449/22087210.1653/024.100.02382-s2.0-85021775738Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengFlorida Entomologistinfo:eu-repo/semantics/openAccess2022-04-28T19:06:23Zoai:repositorio.unesp.br:11449/220872Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-05-23T11:45:43.847916Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Biology of telenomus pachycoris (Hymenoptera: Scelionidae), a parasitoid of eggs of pachycoris torridus (Hemiptera: Scutelleridae): The effects of egg age, exposure time, and temperature |
title |
Biology of telenomus pachycoris (Hymenoptera: Scelionidae), a parasitoid of eggs of pachycoris torridus (Hemiptera: Scutelleridae): The effects of egg age, exposure time, and temperature |
spellingShingle |
Biology of telenomus pachycoris (Hymenoptera: Scelionidae), a parasitoid of eggs of pachycoris torridus (Hemiptera: Scutelleridae): The effects of egg age, exposure time, and temperature Filho, Raul Da Cunha Borges biological control parasitism physic nut rearing technique temperature requirement |
title_short |
Biology of telenomus pachycoris (Hymenoptera: Scelionidae), a parasitoid of eggs of pachycoris torridus (Hemiptera: Scutelleridae): The effects of egg age, exposure time, and temperature |
title_full |
Biology of telenomus pachycoris (Hymenoptera: Scelionidae), a parasitoid of eggs of pachycoris torridus (Hemiptera: Scutelleridae): The effects of egg age, exposure time, and temperature |
title_fullStr |
Biology of telenomus pachycoris (Hymenoptera: Scelionidae), a parasitoid of eggs of pachycoris torridus (Hemiptera: Scutelleridae): The effects of egg age, exposure time, and temperature |
title_full_unstemmed |
Biology of telenomus pachycoris (Hymenoptera: Scelionidae), a parasitoid of eggs of pachycoris torridus (Hemiptera: Scutelleridae): The effects of egg age, exposure time, and temperature |
title_sort |
Biology of telenomus pachycoris (Hymenoptera: Scelionidae), a parasitoid of eggs of pachycoris torridus (Hemiptera: Scutelleridae): The effects of egg age, exposure time, and temperature |
author |
Filho, Raul Da Cunha Borges |
author_facet |
Filho, Raul Da Cunha Borges Nava, Dori E. Pratissoli, Dirceu Polanczyk, Ricardo A. [UNESP] Marangon, Ricardo B. Loiácono, Marta |
author_role |
author |
author2 |
Nava, Dori E. Pratissoli, Dirceu Polanczyk, Ricardo A. [UNESP] Marangon, Ricardo B. Loiácono, Marta |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Pelotas Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Universidade Federal do Espírito Santo (UFES) Universidade Estadual Paulista (UNESP) Museo de La Plata |
dc.contributor.author.fl_str_mv |
Filho, Raul Da Cunha Borges Nava, Dori E. Pratissoli, Dirceu Polanczyk, Ricardo A. [UNESP] Marangon, Ricardo B. Loiácono, Marta |
dc.subject.por.fl_str_mv |
biological control parasitism physic nut rearing technique temperature requirement |
topic |
biological control parasitism physic nut rearing technique temperature requirement |
description |
Telenomus pachycoris (Johnson) (Hymenoptera: Scelionidae) is a parasitoid of eggs of Pachycoris torridus (Scopoli) (Hemiptera: Scutelleridae), a main pest of physic nut (Jatropha curcas L.; Euphorbiaceae). The objective of this work was to know the biology of T. pachycoris in P. torridus eggs under various conditions in order to develop a rearing technique for this parasitoid in the laboratory. We offered eggs of P. torridus to T. pachycoris during 4 exposition periods (6, 12, 18, and 24 h), as well as eggs of different ages (1 to 11 d), to evaluate, in both experiments, the number of parasitized eggs, duration of the egg-to-adult period, percentage of emergence, and sex ratio. We also evaluated the effect of constant temperatures (18, 20, 22, 25, 28, and 30 °C) and determined the duration of the egg-to-adult period, percentage of emergence, and sex ratio and estimated the thermal requirements and the number of generations per yr of T. pachycoris at each temperature. Parasitism of eggs was the highest at 12 h of exposure. Eggs up to 3 d old were the most parasitized, and the parasitism was zero on day 11. The duration of the egg-to-adult period was inversely proportional to temperature, ranging from 33.6 d at 18 °C to 9.8 d at 30 °C. The threshold temperature estimated for T. pachycoris was 12.9 °C, and the estimated thermal constant was 163.9 degree-days. The number of generations of T. pachycoris ranged from 11.3 to 38.1 per yr at 18 and 30 °C, respectively. The results may contribute to developing techniques for rearing T. pachycoris in the laboratory. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-06-01 2022-04-28T19:06:23Z 2022-04-28T19:06:23Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1653/024.100.0238 Florida Entomologist, v. 100, n. 2, p. 375-379, 2017. 0015-4040 http://hdl.handle.net/11449/220872 10.1653/024.100.0238 2-s2.0-85021775738 |
url |
http://dx.doi.org/10.1653/024.100.0238 http://hdl.handle.net/11449/220872 |
identifier_str_mv |
Florida Entomologist, v. 100, n. 2, p. 375-379, 2017. 0015-4040 10.1653/024.100.0238 2-s2.0-85021775738 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Florida Entomologist |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
375-379 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803045877423538176 |