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Release density, dispersal capacity, and optimal rearing conditions forTelenomus remus, an egg parasitoid ofSpodoptera frugiperda, in maize

dc.contributor.authorSalazar-Mendoza, Paolo
dc.contributor.authorRodriguez-Saona, Cesar
dc.contributor.authorFernandes, Odair Aparecido [UNESP]
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionRutgers State Univ
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2020-12-11T20:53:14Z
dc.date.available2020-12-11T20:53:14Z
dc.date.issued2020-06-06
dc.description.abstractWe determined the release density, dispersal capacity, and optimal storage conditions for the parasitoidTelenomus remusNixon to controlSpodoptera frugiperda(J.E. Smith). Each of eighty plants within an 829-m(2)plot were artificially infested with oneS. frugiperdaegg mass in a maize field. These plants were distributed evenly along four concentric squares which allowed for 14 different distances from a central release point (range 3.6-20.3 m). Egg parasitoids were released at four densities (0; 100,000; 150,000; and 200,000 adults/ha) in two vegetative maize growth stages (V4-5 and V8-9). After a 48-h exposure, egg masses were retrieved to evaluate parasitism rates.Spodoptera frugiperdaegg parasitism byT. remusdid not differ among the three parasitoid release densities. Egg parasitism decreased linearly with increasing distance from the release point, but this was influenced by the crop's phenological stage. Egg parasitism was 28% higher at the older than younger growth stages, and dispersal distance and area of dispersal were 35% and 16% lower, respectively, at the older stage. In the laboratory, we evaluated the effects of six storage periods (0, 3, 6, 9, 12, and 15 days) ofS. frugiperdaeggs at four temperatures (5, 10, 15, and 20 degrees C) onT. remusadult emergence. Our results showed the highest emergence when eggs were stored at 15 degrees C for <= 9 days. Altogether, we identified important mass release and rearing parameters for augmentative biocontrol ofT. remusonS. frugiperdaeggs that may help reduce production and marketing costs.en
dc.description.affiliationUniv Sao Paulo, Dept Entomol & Acarol, Piracicaba, SP, Brazil
dc.description.affiliationRutgers State Univ, Dept Entomol, Chatsworth, NJ USA
dc.description.affiliationSao Paulo State Univ, Sch Agr & Vet Sci, Jaboticabal, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Sch Agr & Vet Sci, Jaboticabal, Brazil
dc.description.sponsorshipPrograma Nacional de Becas y Credito Educativo (PRONABEC), Peru
dc.format.extent20
dc.identifierhttp://dx.doi.org/10.1080/09583157.2020.1776841
dc.identifier.citationBiocontrol Science And Technology. Abingdon: Taylor & Francis Ltd, 20 p., 2020.
dc.identifier.doi10.1080/09583157.2020.1776841
dc.identifier.issn0958-3157
dc.identifier.lattes1458288287757880
dc.identifier.orcid0000-0003-3489-4754
dc.identifier.urihttp://hdl.handle.net/11449/197826
dc.identifier.wosWOS:000542855100001
dc.language.isoeng
dc.publisherTaylor & Francis Ltd
dc.relation.ispartofBiocontrol Science And Technology
dc.sourceWeb of Science
dc.subjectParasitism
dc.subjectPlatygastridae
dc.subjectfall armyworm
dc.subjectegg storage
dc.subjectaugmentative biological control
dc.titleRelease density, dispersal capacity, and optimal rearing conditions forTelenomus remus, an egg parasitoid ofSpodoptera frugiperda, in maizeen
dc.typeArtigo
dcterms.licensehttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dcterms.rightsHolderTaylor & Francis Ltd
unesp.author.lattes1458288287757880[3]
unesp.author.orcid0000-0001-6791-1616[1]
unesp.author.orcid0000-0003-3489-4754[3]
unesp.departmentFitossanidade - FCAVpt

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