Dynamic intraguild interactions between two sympatric and congeneric coccinellid species associated with aphids could explain their coexistence in citrus agroecosystems
Scymnus interruptus and Scymnus subvillosus (Coleoptera: Coccinellidae) are the most frequent aphid predators in Western Mediterranean citrus agroecosystems. Intraguild predation (IGP) between them would be expected, but how IGP might affect their coexistence and biological control function remain...
| Autores principales: | , , |
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| Formato: | article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2024
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/20.500.11939/8918 https://www.sciencedirect.com/science/article/pii/S1049964424000719 |
| _version_ | 1855032878420721664 |
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| author | Bouvet, Juan Pedro Raúl Urbaneja, Alberto Monzó, César |
| author_browse | Bouvet, Juan Pedro Raúl Monzó, César Urbaneja, Alberto |
| author_facet | Bouvet, Juan Pedro Raúl Urbaneja, Alberto Monzó, César |
| author_sort | Bouvet, Juan Pedro Raúl |
| collection | ReDivia |
| description | Scymnus interruptus and Scymnus subvillosus (Coleoptera: Coccinellidae) are the most frequent aphid predators in
Western Mediterranean citrus agroecosystems. Intraguild predation (IGP) between them would be expected, but
how IGP might affect their coexistence and biological control function remains unknown. In this work, we assess
the frequency of predator encounters in the field and investigate intraguild predation between these two
predators in laboratory settings. Different field prey scenarios derived from the field observations were simulated
with the two dominant aphid species in this agroecosystem, Aphis gossypii and Aphis spiraecola.
Scymnus subvillosus and S. interruptus engaged in IGP but the magnitude and symmetry varied with the prey
species and abundance. At high aphid densities, IGP was symmetric and weak, whereas, at low aphid densities,
IGP was strong and very asymmetric, with S. interruptus taking the role of the intraguild predator. The developmental
time of S. subvillosus was reduced when competing with S. interruptus at high extraguild prey densities.
The adult size of both predators under weak IGP also increased even when the developmental time had been
reduced.
We predict that high aphid infestations in the spring would benefit S. subvillosus, while the strong and
asymmetric IGP at low aphid infestations would hinder its coexistence with S. interruptus. Our results give a
theoretical explanation to what is observed in the field: S. subvillosus is typically dominant during the high aphid
infestations of the spring, whereas S. interruptus increases in relative dominance during the summer and fall when
aphid abundance is much less. |
| format | article |
| id | ReDivia8918 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | ReDivia89182025-04-25T14:49:37Z Dynamic intraguild interactions between two sympatric and congeneric coccinellid species associated with aphids could explain their coexistence in citrus agroecosystems Bouvet, Juan Pedro Raúl Urbaneja, Alberto Monzó, César Intraguild predation Sublethal effects Competition H10 Pests of plants Scymnus Biological control Diet Scymnus interruptus and Scymnus subvillosus (Coleoptera: Coccinellidae) are the most frequent aphid predators in Western Mediterranean citrus agroecosystems. Intraguild predation (IGP) between them would be expected, but how IGP might affect their coexistence and biological control function remains unknown. In this work, we assess the frequency of predator encounters in the field and investigate intraguild predation between these two predators in laboratory settings. Different field prey scenarios derived from the field observations were simulated with the two dominant aphid species in this agroecosystem, Aphis gossypii and Aphis spiraecola. Scymnus subvillosus and S. interruptus engaged in IGP but the magnitude and symmetry varied with the prey species and abundance. At high aphid densities, IGP was symmetric and weak, whereas, at low aphid densities, IGP was strong and very asymmetric, with S. interruptus taking the role of the intraguild predator. The developmental time of S. subvillosus was reduced when competing with S. interruptus at high extraguild prey densities. The adult size of both predators under weak IGP also increased even when the developmental time had been reduced. We predict that high aphid infestations in the spring would benefit S. subvillosus, while the strong and asymmetric IGP at low aphid infestations would hinder its coexistence with S. interruptus. Our results give a theoretical explanation to what is observed in the field: S. subvillosus is typically dominant during the high aphid infestations of the spring, whereas S. interruptus increases in relative dominance during the summer and fall when aphid abundance is much less. 2024-05-27T11:20:16Z 2024-05-27T11:20:16Z 2024 article publishedVersion Bouvet, J. P. R., Urbaneja, A., & Monzó, C. (2024). Dynamic intraguild interactions between two sympatric and congeneric coccinellid species associated with aphids could explain their coexistence in citrus agroecosystems. Biological Control, 192, 105506. 1049-9644 https://hdl.handle.net/20.500.11939/8918 10.1016/j.biocontrol.2024.105506 https://www.sciencedirect.com/science/article/pii/S1049964424000719 en The research leading to these results was partially funded by the Spanish Ministry of Economy and Competitiveness (MEC) (INIA E-RTA RTA2015-00005-C06) and by the project IVIA-GVA 52202 from Instituto Valenciano de Investigaciones Agrarias (this project is susceptible of being co-financed by the European Union through the ERDF Program 2021-2027 Comunitat Valenciana). JPRB was recipient of a research fellowship from INTA-Argentina. info:eu-repo/grantAgreement/AEI/Programa Estatal de I+D+I orientada a los retos de la sociedad/E-RTA2015-00005-C06-03/ES/Métodos de control y contención de Trioza Erytreae, vector del huanglongbing de los cítricos info:eu-repo/grantAgreement/ERDF/PCV 2021-2027/52202/ES/Control biológico de plagas y enfermedades como pieza clave en el impulso de la Sostenibilidad de los cultivos agrarios de la Comunidad Valenciana/SOSTENIBLE Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ openAccess Elsevier electronico |
| spellingShingle | Intraguild predation Sublethal effects Competition H10 Pests of plants Scymnus Biological control Diet Bouvet, Juan Pedro Raúl Urbaneja, Alberto Monzó, César Dynamic intraguild interactions between two sympatric and congeneric coccinellid species associated with aphids could explain their coexistence in citrus agroecosystems |
| title | Dynamic intraguild interactions between two sympatric and congeneric coccinellid species associated with aphids could explain their coexistence in citrus agroecosystems |
| title_full | Dynamic intraguild interactions between two sympatric and congeneric coccinellid species associated with aphids could explain their coexistence in citrus agroecosystems |
| title_fullStr | Dynamic intraguild interactions between two sympatric and congeneric coccinellid species associated with aphids could explain their coexistence in citrus agroecosystems |
| title_full_unstemmed | Dynamic intraguild interactions between two sympatric and congeneric coccinellid species associated with aphids could explain their coexistence in citrus agroecosystems |
| title_short | Dynamic intraguild interactions between two sympatric and congeneric coccinellid species associated with aphids could explain their coexistence in citrus agroecosystems |
| title_sort | dynamic intraguild interactions between two sympatric and congeneric coccinellid species associated with aphids could explain their coexistence in citrus agroecosystems |
| topic | Intraguild predation Sublethal effects Competition H10 Pests of plants Scymnus Biological control Diet |
| url | https://hdl.handle.net/20.500.11939/8918 https://www.sciencedirect.com/science/article/pii/S1049964424000719 |
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