Insecticides alter prey choice of potential biocontrol agent Philodromus cespitum (Araneae, Philodromidae).
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| Title: | Insecticides alter prey choice of potential biocontrol agent Philodromus cespitum (Araneae, Philodromidae). |
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| Authors: | Petcharad, Booppa1,2, Košulič, Ondřej3, Michalko, Radek4 radar.mi@seznam.cz |
| Source: | Chemosphere. Jul2018, Vol. 202, p491-497. 7p. |
| Subjects: | Predation, Methoxyfenozide, Hydrazines, Philodromus, Jumping plant-lice |
| Abstract: | Even though pesticides can have various sublethal effects on behaviour of biocontrol agents, no study to date has investigated the effects of pesticides on the prey choice of generalist predators. Prey choice of generalist predators is among key factors determining the predation pressure they exert on pests, because it influences fitness of predators and consequently their densities and per capita capture rate. Here, we investigated the effect of Integro (a.i. methoxyfenozide) and SpinTor 480 Sc (a.i. spinosad) on prey choice and predatory activity of the spider Philodromus cespitum , which is known significantly to reduce hemipteran and dipteran pests in fruit orchards. We compared the prey preferences of philodromids between the psyllid pest Cacopsylla pyri (Hemiptera, Psyllidae) and beneficial Theridion sp. spiders in laboratory experiments. We found that both pesticides altered the prey preferences of philodromids. While the philodromids in a control treatment preferred theridiid spiders over the psyllid pest, philodromids in the pesticide treatments exhibited no significant prey preferences. The changes in prey preferences were caused by increased predation on the psyllids, while the predation on the theridiid remained similar. We suggest that the changes in prey preferences might theoretically be due to 1) impaired sensory systems, 2) altered taste, and/or 3) altered mobility. In combination with other studies finding reduced predation on fruit flies in P. cespitum after exposure to SpinTor, our results indicate that the sublethal effects of pesticides on predatory behaviour of generalist predators can depend on prey type and/or prey community composition. [ABSTRACT FROM AUTHOR] |
| Copyright of Chemosphere is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 128956408 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Insecticides alter prey choice of potential biocontrol agent Philodromus cespitum (Araneae, Philodromidae). – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Petcharad%2C+Booppa%22">Petcharad, Booppa</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Košulič%2C+Ondřej%22">Košulič, Ondřej</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Michalko%2C+Radek%22">Michalko, Radek</searchLink><relatesTo>4</relatesTo><i> radar.mi@seznam.cz</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Chemosphere%22">Chemosphere</searchLink>. Jul2018, Vol. 202, p491-497. 7p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Predation%22">Predation</searchLink><br /><searchLink fieldCode="DE" term="%22Methoxyfenozide%22">Methoxyfenozide</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrazines%22">Hydrazines</searchLink><br /><searchLink fieldCode="DE" term="%22Philodromus%22">Philodromus</searchLink><br /><searchLink fieldCode="DE" term="%22Jumping+plant-lice%22">Jumping plant-lice</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Even though pesticides can have various sublethal effects on behaviour of biocontrol agents, no study to date has investigated the effects of pesticides on the prey choice of generalist predators. Prey choice of generalist predators is among key factors determining the predation pressure they exert on pests, because it influences fitness of predators and consequently their densities and per capita capture rate. Here, we investigated the effect of Integro (a.i. methoxyfenozide) and SpinTor 480 Sc (a.i. spinosad) on prey choice and predatory activity of the spider Philodromus cespitum , which is known significantly to reduce hemipteran and dipteran pests in fruit orchards. We compared the prey preferences of philodromids between the psyllid pest Cacopsylla pyri (Hemiptera, Psyllidae) and beneficial Theridion sp. spiders in laboratory experiments. We found that both pesticides altered the prey preferences of philodromids. While the philodromids in a control treatment preferred theridiid spiders over the psyllid pest, philodromids in the pesticide treatments exhibited no significant prey preferences. The changes in prey preferences were caused by increased predation on the psyllids, while the predation on the theridiid remained similar. We suggest that the changes in prey preferences might theoretically be due to 1) impaired sensory systems, 2) altered taste, and/or 3) altered mobility. In combination with other studies finding reduced predation on fruit flies in P. cespitum after exposure to SpinTor, our results indicate that the sublethal effects of pesticides on predatory behaviour of generalist predators can depend on prey type and/or prey community composition. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Chemosphere is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.chemosphere.2018.03.134 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 491 Subjects: – SubjectFull: Predation Type: general – SubjectFull: Methoxyfenozide Type: general – SubjectFull: Hydrazines Type: general – SubjectFull: Philodromus Type: general – SubjectFull: Jumping plant-lice Type: general Titles: – TitleFull: Insecticides alter prey choice of potential biocontrol agent Philodromus cespitum (Araneae, Philodromidae). Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Petcharad, Booppa – PersonEntity: Name: NameFull: Košulič, Ondřej – PersonEntity: Name: NameFull: Michalko, Radek IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2018 Type: published Y: 2018 Identifiers: – Type: issn-print Value: 00456535 Numbering: – Type: volume Value: 202 Titles: – TitleFull: Chemosphere Type: main |
| ResultId | 1 |
