Negative effect of global warming on biological control is mitigated by direct competition between sympatric parasitoids
Parasitoids are among the most important and successful groups of natural enemies used in the biological control of insect pests. In most systems, several parasitoid species can parasitize the same pest. The coexistence of parasitoids in agroecosystems and their efficacy as biological control agents...
| Autores principales: | , , |
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| Formato: | article |
| Lenguaje: | Inglés |
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Elsevier
2018
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| Acceso en línea: | http://hdl.handle.net/20.500.11939/6116 https://doi.org/10.1016/j.biocontrol.2018.04.006 |
| _version_ | 1855032369747066880 |
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| author | Cebolla, Ruth van Baaren, Joan Tena, Alejandro |
| author_browse | Cebolla, Ruth Tena, Alejandro van Baaren, Joan |
| author_facet | Cebolla, Ruth van Baaren, Joan Tena, Alejandro |
| author_sort | Cebolla, Ruth |
| collection | ReDivia |
| description | Parasitoids are among the most important and successful groups of natural enemies used in the biological control of insect pests. In most systems, several parasitoid species can parasitize the same pest. The coexistence of parasitoids in agroecosystems and their efficacy as biological control agents may be disrupted by global warming. An increase of approximately 3 °C is predicted by the end of the twenty-first century in the Mediterranean basin (IPCC, 2014). In this context, we compared the present and future performance of two sympatric parasitoids of the genus Aphytis (Hymenoptera: Aphelinidae), which control the armoured scale Aonidiella aurantii (Hemiptera: Diaspididae) in Mediterranean citrus, either alone or in combination. The net reproductive rate (R0) of the introduced Aphytis melinus DeBach was higher than that of its competitor, the native Aphytis chrysomphali (Mercet), under current conditions. The two parasitoids responded differently to higher temperature and competition. The R0 of A. chrysomphali decreased by 50% when both parasitoids competed in the same patch, but was not affected by the temperature increase. The R0 of A. melinus decreased approximately 46% with the increase in temperature because the proportion of females was reduced. However, the presence of A. chrysomphali competing in the same patch mitigated the negative effect of the increase in temperature on A. melinus (R0 decreased by only 16%). Overall, our results suggest that global warming will have a negative effect on the biological control of A. aurantii and that this effect will be higher in areas, such as southern Spain, where A. melinus has displaced A. chrysomphali. |
| format | article |
| id | ReDivia6116 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | ReDivia61162025-04-25T14:46:15Z Negative effect of global warming on biological control is mitigated by direct competition between sympatric parasitoids Cebolla, Ruth van Baaren, Joan Tena, Alejandro Aphytis; Aonidiella aurantii; Citrus; Interspecific competition; Displacement H10 Pests of plants Aonidiella aurantii Citrus Aphytis Interspecific competition Parasitoids are among the most important and successful groups of natural enemies used in the biological control of insect pests. In most systems, several parasitoid species can parasitize the same pest. The coexistence of parasitoids in agroecosystems and their efficacy as biological control agents may be disrupted by global warming. An increase of approximately 3 °C is predicted by the end of the twenty-first century in the Mediterranean basin (IPCC, 2014). In this context, we compared the present and future performance of two sympatric parasitoids of the genus Aphytis (Hymenoptera: Aphelinidae), which control the armoured scale Aonidiella aurantii (Hemiptera: Diaspididae) in Mediterranean citrus, either alone or in combination. The net reproductive rate (R0) of the introduced Aphytis melinus DeBach was higher than that of its competitor, the native Aphytis chrysomphali (Mercet), under current conditions. The two parasitoids responded differently to higher temperature and competition. The R0 of A. chrysomphali decreased by 50% when both parasitoids competed in the same patch, but was not affected by the temperature increase. The R0 of A. melinus decreased approximately 46% with the increase in temperature because the proportion of females was reduced. However, the presence of A. chrysomphali competing in the same patch mitigated the negative effect of the increase in temperature on A. melinus (R0 decreased by only 16%). Overall, our results suggest that global warming will have a negative effect on the biological control of A. aurantii and that this effect will be higher in areas, such as southern Spain, where A. melinus has displaced A. chrysomphali. 2018-05-16T15:17:05Z 2018-05-16T15:17:05Z 2018 article Cebolla, R., Urbaneja, A., van Baaren, J., & Tena, A. (2018). Negative effect of global warming on biological control is mitigated by direct competition between sympatric parasitoids. Biological Control, 122, 60-66. http://hdl.handle.net/20.500.11939/6116 https://doi.org/10.1016/j.biocontrol.2018.04.006 en Elsevier electronico |
| spellingShingle | Aphytis; Aonidiella aurantii; Citrus; Interspecific competition; Displacement H10 Pests of plants Aonidiella aurantii Citrus Aphytis Interspecific competition Cebolla, Ruth van Baaren, Joan Tena, Alejandro Negative effect of global warming on biological control is mitigated by direct competition between sympatric parasitoids |
| title | Negative effect of global warming on biological control is mitigated by direct competition between sympatric parasitoids |
| title_full | Negative effect of global warming on biological control is mitigated by direct competition between sympatric parasitoids |
| title_fullStr | Negative effect of global warming on biological control is mitigated by direct competition between sympatric parasitoids |
| title_full_unstemmed | Negative effect of global warming on biological control is mitigated by direct competition between sympatric parasitoids |
| title_short | Negative effect of global warming on biological control is mitigated by direct competition between sympatric parasitoids |
| title_sort | negative effect of global warming on biological control is mitigated by direct competition between sympatric parasitoids |
| topic | Aphytis; Aonidiella aurantii; Citrus; Interspecific competition; Displacement H10 Pests of plants Aonidiella aurantii Citrus Aphytis Interspecific competition |
| url | http://hdl.handle.net/20.500.11939/6116 https://doi.org/10.1016/j.biocontrol.2018.04.006 |
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