Combining lacewings and parasitoids for biological control of foxglove aphids in sweet pepper

Autores
Rocca, Margarita; Messelink, Gerben J.
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The role of natural enemy diversity in biological pest control has been debated in many studies, and understanding how interactions amongst predators and parasitoids affect herbivore populations is crucial for pest management. In this study, we assessed the individual and combined use of two species of natural enemies, the parasitoid Aphidius ervi Haliday, and the predatory brown lacewing Micromus variegatus (Fabricius), on their shared prey, the foxglove aphid, Aulacorthum solani (Kaltenbach), on sweet pepper. We hypothesized that the presence of intraguild predation (IGP) and predator facilitation (through induced aphid dropping behaviour) might have both negative and positive effects on aphid control, respectively. Our greenhouse trial showed that overall, the greatest suppression of aphids occurred in the treatment with both the parasitoid and the lacewing. While the combination of lacewings and parasitoids significantly increased aphid control compared to the use of parasitoids alone, the effect was not significantly different to the treatment with only predators, although there was a clear trend of enhanced suppression. Thus, the combined effects of both species of natural enemies were between additive and non-additive, suggesting that the combination is neither positive nor negative for aphid control. High levels of IGP, as proven in the laboratory, were probably compensated for by the strong aphid suppression provided by the lacewings, whether or not supplemented with some level of predator facilitation. For aphid management over a longer time scale, it might still be useful to combine lacewings and parasitoids to ensure stable and resilient aphid control.
Centro de Estudios Parasitológicos y de Vectores
Materia
Ciencias Naturales
Aphidius ervi
Aulacorthum solani
dropping behaviour
intraguild predation
Micromus variegatus
predator facilitation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/87662

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network_name_str SEDICI (UNLP)
spelling Combining lacewings and parasitoids for biological control of foxglove aphids in sweet pepperRocca, MargaritaMesselink, Gerben J.Ciencias NaturalesAphidius erviAulacorthum solanidropping behaviourintraguild predationMicromus variegatuspredator facilitationThe role of natural enemy diversity in biological pest control has been debated in many studies, and understanding how interactions amongst predators and parasitoids affect herbivore populations is crucial for pest management. In this study, we assessed the individual and combined use of two species of natural enemies, the parasitoid <i>Aphidius ervi</i> Haliday, and the predatory brown lacewing <i>Micromus variegatus</i> (Fabricius), on their shared prey, the foxglove aphid, <i>Aulacorthum solani</i> (Kaltenbach), on sweet pepper. We hypothesized that the presence of intraguild predation (IGP) and predator facilitation (through induced aphid dropping behaviour) might have both negative and positive effects on aphid control, respectively. Our greenhouse trial showed that overall, the greatest suppression of aphids occurred in the treatment with both the parasitoid and the lacewing. While the combination of lacewings and parasitoids significantly increased aphid control compared to the use of parasitoids alone, the effect was not significantly different to the treatment with only predators, although there was a clear trend of enhanced suppression. Thus, the combined effects of both species of natural enemies were between additive and non-additive, suggesting that the combination is neither positive nor negative for aphid control. High levels of IGP, as proven in the laboratory, were probably compensated for by the strong aphid suppression provided by the lacewings, whether or not supplemented with some level of predator facilitation. For aphid management over a longer time scale, it might still be useful to combine lacewings and parasitoids to ensure stable and resilient aphid control.Centro de Estudios Parasitológicos y de Vectores2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf402-410http://sedici.unlp.edu.ar/handle/10915/87662enginfo:eu-repo/semantics/altIdentifier/issn/0931-2048info:eu-repo/semantics/altIdentifier/doi/10.1111/jen.12355info:eu-repo/semantics/altIdentifier/hdl/11336/49126info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:17:14Zoai:sedici.unlp.edu.ar:10915/87662Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:17:14.351SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Combining lacewings and parasitoids for biological control of foxglove aphids in sweet pepper
title Combining lacewings and parasitoids for biological control of foxglove aphids in sweet pepper
spellingShingle Combining lacewings and parasitoids for biological control of foxglove aphids in sweet pepper
Rocca, Margarita
Ciencias Naturales
Aphidius ervi
Aulacorthum solani
dropping behaviour
intraguild predation
Micromus variegatus
predator facilitation
title_short Combining lacewings and parasitoids for biological control of foxglove aphids in sweet pepper
title_full Combining lacewings and parasitoids for biological control of foxglove aphids in sweet pepper
title_fullStr Combining lacewings and parasitoids for biological control of foxglove aphids in sweet pepper
title_full_unstemmed Combining lacewings and parasitoids for biological control of foxglove aphids in sweet pepper
title_sort Combining lacewings and parasitoids for biological control of foxglove aphids in sweet pepper
dc.creator.none.fl_str_mv Rocca, Margarita
Messelink, Gerben J.
author Rocca, Margarita
author_facet Rocca, Margarita
Messelink, Gerben J.
author_role author
author2 Messelink, Gerben J.
author2_role author
dc.subject.none.fl_str_mv Ciencias Naturales
Aphidius ervi
Aulacorthum solani
dropping behaviour
intraguild predation
Micromus variegatus
predator facilitation
topic Ciencias Naturales
Aphidius ervi
Aulacorthum solani
dropping behaviour
intraguild predation
Micromus variegatus
predator facilitation
dc.description.none.fl_txt_mv The role of natural enemy diversity in biological pest control has been debated in many studies, and understanding how interactions amongst predators and parasitoids affect herbivore populations is crucial for pest management. In this study, we assessed the individual and combined use of two species of natural enemies, the parasitoid <i>Aphidius ervi</i> Haliday, and the predatory brown lacewing <i>Micromus variegatus</i> (Fabricius), on their shared prey, the foxglove aphid, <i>Aulacorthum solani</i> (Kaltenbach), on sweet pepper. We hypothesized that the presence of intraguild predation (IGP) and predator facilitation (through induced aphid dropping behaviour) might have both negative and positive effects on aphid control, respectively. Our greenhouse trial showed that overall, the greatest suppression of aphids occurred in the treatment with both the parasitoid and the lacewing. While the combination of lacewings and parasitoids significantly increased aphid control compared to the use of parasitoids alone, the effect was not significantly different to the treatment with only predators, although there was a clear trend of enhanced suppression. Thus, the combined effects of both species of natural enemies were between additive and non-additive, suggesting that the combination is neither positive nor negative for aphid control. High levels of IGP, as proven in the laboratory, were probably compensated for by the strong aphid suppression provided by the lacewings, whether or not supplemented with some level of predator facilitation. For aphid management over a longer time scale, it might still be useful to combine lacewings and parasitoids to ensure stable and resilient aphid control.
Centro de Estudios Parasitológicos y de Vectores
description The role of natural enemy diversity in biological pest control has been debated in many studies, and understanding how interactions amongst predators and parasitoids affect herbivore populations is crucial for pest management. In this study, we assessed the individual and combined use of two species of natural enemies, the parasitoid <i>Aphidius ervi</i> Haliday, and the predatory brown lacewing <i>Micromus variegatus</i> (Fabricius), on their shared prey, the foxglove aphid, <i>Aulacorthum solani</i> (Kaltenbach), on sweet pepper. We hypothesized that the presence of intraguild predation (IGP) and predator facilitation (through induced aphid dropping behaviour) might have both negative and positive effects on aphid control, respectively. Our greenhouse trial showed that overall, the greatest suppression of aphids occurred in the treatment with both the parasitoid and the lacewing. While the combination of lacewings and parasitoids significantly increased aphid control compared to the use of parasitoids alone, the effect was not significantly different to the treatment with only predators, although there was a clear trend of enhanced suppression. Thus, the combined effects of both species of natural enemies were between additive and non-additive, suggesting that the combination is neither positive nor negative for aphid control. High levels of IGP, as proven in the laboratory, were probably compensated for by the strong aphid suppression provided by the lacewings, whether or not supplemented with some level of predator facilitation. For aphid management over a longer time scale, it might still be useful to combine lacewings and parasitoids to ensure stable and resilient aphid control.
publishDate 2017
dc.date.none.fl_str_mv 2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/87662
url http://sedici.unlp.edu.ar/handle/10915/87662
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0931-2048
info:eu-repo/semantics/altIdentifier/doi/10.1111/jen.12355
info:eu-repo/semantics/altIdentifier/hdl/11336/49126
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
402-410
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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