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 remains...
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| Format: | Artículo |
| Language: | Inglés |
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Elsevier
2024
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| Online Access: | http://hdl.handle.net/20.500.12123/17235 https://www.sciencedirect.com/science/article/pii/S1049964424000719 https://doi.org/10.1016/j.biocontrol.2024.105506 |
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| author | Bouvet, Juan Pedro Urbaneja, Alberto Monzó, César |
| author_browse | Bouvet, Juan Pedro Monzó, César Urbaneja, Alberto |
| author_facet | Bouvet, Juan Pedro Urbaneja, Alberto Monzó, César |
| author_sort | Bouvet, Juan Pedro |
| collection | INTA Digital |
| 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 | Artículo |
| id | INTA17235 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA172352024-03-27T11:48:02Z Dynamic intraguild interactions between two sympatric and congeneric coccinellid species associated with aphids could explain their coexistence in citrus agroecosystems Bouvet, Juan Pedro Urbaneja, Alberto Monzó, César Coccinellidae Scymnus Biological Control Citrus Intraguild Predation Agroecosystems Control Biológico Depredación Intragremial Agroecosistemas Scymnus interruptus Scymnus subvillosus 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. EEA Concordia Fil: Bouvet, Juan Pedro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Concordia; Argentina Fil: Bouvet, Juan Pedro. Instituto Valenciano de Investigaciones Agrarias (IVIA). Centro de Protección Vegetal y Biotecnología; España Fil: Urbaneja, Alberto. Instituto Valenciano de Investigaciones Agrarias (IVIA). Centro de Protección Vegetal y Biotecnología; España Fil: Monzó, César. Instituto Valenciano de Investigaciones Agrarias (IVIA). Centro de Protección Vegetal y Biotecnología; España 2024-03-27T11:45:06Z 2024-03-27T11:45:06Z 2024-05 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/17235 https://www.sciencedirect.com/science/article/pii/S1049964424000719 1049-9644 1090-2112 https://doi.org/10.1016/j.biocontrol.2024.105506 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Elsevier Biological Control 192 : 105506. (May 2024) |
| spellingShingle | Coccinellidae Scymnus Biological Control Citrus Intraguild Predation Agroecosystems Control Biológico Depredación Intragremial Agroecosistemas Scymnus interruptus Scymnus subvillosus Bouvet, Juan Pedro 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 | Coccinellidae Scymnus Biological Control Citrus Intraguild Predation Agroecosystems Control Biológico Depredación Intragremial Agroecosistemas Scymnus interruptus Scymnus subvillosus |
| url | http://hdl.handle.net/20.500.12123/17235 https://www.sciencedirect.com/science/article/pii/S1049964424000719 https://doi.org/10.1016/j.biocontrol.2024.105506 |
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