Non-target risk assessment of Cotesia typhae, a potential biological control agent of the Mediterranean corn borer
Biocontrol of exotic insect pests can be achieved by introducing natural enemies from the native range. This method has been successful in controlling many pests worldwide, but negative effects on local non-targets have sometimes occurred. Before the introduction of exotic macro-organisms useful for...
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Elsevier
2024-12-01
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| Series: | Biological Control |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1049964424002226 |
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| author | Taiadjana M. Fortuna Loïc Colin-Duchevet Yanna Desreumaux Rémi Jeannette Manuel Le Gonnidec Bruno Le Ru Romane Mettauer Florence Mougel Laure Kaiser |
| author_facet | Taiadjana M. Fortuna Loïc Colin-Duchevet Yanna Desreumaux Rémi Jeannette Manuel Le Gonnidec Bruno Le Ru Romane Mettauer Florence Mougel Laure Kaiser |
| author_sort | Taiadjana M. Fortuna |
| collection | DOAJ |
| description | Biocontrol of exotic insect pests can be achieved by introducing natural enemies from the native range. This method has been successful in controlling many pests worldwide, but negative effects on local non-targets have sometimes occurred. Before the introduction of exotic macro-organisms useful for crop protection, a risk assessment is mandatory under EU regulations. In this study, we assessed the non-target risks of the larval parasitoid Cotesia typhae (Hymenoptera, Braconidae), a potential agent for inundative biocontrol of the Mediterranean corn borer Sesamia nonagrioides (Lepidoptera, Noctuidae), both natives to Sub-Saharan Africa. The effects of C. typhae on 8 non-target species was determined by sequential analysis under laboratory conditions, including tests of acceptance, development monitoring, olfactory attractiveness and in planta parasitism test. The results varied considerably between species. By multiplying the probability of outcome of the successive steps of the parasitism process, we estimated that non-target species had lower average risks of C. typhae development (1 % of non-target larvae at risk) and of induced mortality (5 %) compared to S. nonagrioides larvae (41 and 42 % respectively). The highest mortality risk in planta was observed for the cattail stemborer, Nonagria typhae (9 %), although it was still lower than for the target species (33 %). These host range results and the low survival capacity of the parasitoid at winter temperatures, suggest a low long-term environmental risk, which is supported by the estimation of the global risk index proposed by van Lenteren et al. (2003). The host range and impact of C. typhae in field conditions will soon be determined. |
| format | Article |
| id | doaj-art-97941363dcdc4b50a9fee04f669c699e |
| institution | DOAJ |
| issn | 1049-9644 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Biological Control |
| spelling | doaj-art-97941363dcdc4b50a9fee04f669c699e2025-08-20T02:39:15ZengElsevierBiological Control1049-96442024-12-0119910565710.1016/j.biocontrol.2024.105657Non-target risk assessment of Cotesia typhae, a potential biological control agent of the Mediterranean corn borerTaiadjana M. Fortuna0Loïc Colin-Duchevet1Yanna Desreumaux2Rémi Jeannette3Manuel Le Gonnidec4Bruno Le Ru5Romane Mettauer6Florence Mougel7Laure Kaiser8Corresponding author.; Laboratoire Évolution, Génomes, Comportement, Écologie, UMR Université Paris-Saclay, CNRS and IRD, Gif-sur-Yvette, FranceLaboratoire Évolution, Génomes, Comportement, Écologie, UMR Université Paris-Saclay, CNRS and IRD, Gif-sur-Yvette, FranceLaboratoire Évolution, Génomes, Comportement, Écologie, UMR Université Paris-Saclay, CNRS and IRD, Gif-sur-Yvette, FranceLaboratoire Évolution, Génomes, Comportement, Écologie, UMR Université Paris-Saclay, CNRS and IRD, Gif-sur-Yvette, FranceLaboratoire Évolution, Génomes, Comportement, Écologie, UMR Université Paris-Saclay, CNRS and IRD, Gif-sur-Yvette, FranceLaboratoire Évolution, Génomes, Comportement, Écologie, UMR Université Paris-Saclay, CNRS and IRD, Gif-sur-Yvette, FranceLaboratoire Évolution, Génomes, Comportement, Écologie, UMR Université Paris-Saclay, CNRS and IRD, Gif-sur-Yvette, FranceLaboratoire Évolution, Génomes, Comportement, Écologie, UMR Université Paris-Saclay, CNRS and IRD, Gif-sur-Yvette, FranceLaboratoire Évolution, Génomes, Comportement, Écologie, UMR Université Paris-Saclay, CNRS and IRD, Gif-sur-Yvette, FranceBiocontrol of exotic insect pests can be achieved by introducing natural enemies from the native range. This method has been successful in controlling many pests worldwide, but negative effects on local non-targets have sometimes occurred. Before the introduction of exotic macro-organisms useful for crop protection, a risk assessment is mandatory under EU regulations. In this study, we assessed the non-target risks of the larval parasitoid Cotesia typhae (Hymenoptera, Braconidae), a potential agent for inundative biocontrol of the Mediterranean corn borer Sesamia nonagrioides (Lepidoptera, Noctuidae), both natives to Sub-Saharan Africa. The effects of C. typhae on 8 non-target species was determined by sequential analysis under laboratory conditions, including tests of acceptance, development monitoring, olfactory attractiveness and in planta parasitism test. The results varied considerably between species. By multiplying the probability of outcome of the successive steps of the parasitism process, we estimated that non-target species had lower average risks of C. typhae development (1 % of non-target larvae at risk) and of induced mortality (5 %) compared to S. nonagrioides larvae (41 and 42 % respectively). The highest mortality risk in planta was observed for the cattail stemborer, Nonagria typhae (9 %), although it was still lower than for the target species (33 %). These host range results and the low survival capacity of the parasitoid at winter temperatures, suggest a low long-term environmental risk, which is supported by the estimation of the global risk index proposed by van Lenteren et al. (2003). The host range and impact of C. typhae in field conditions will soon be determined.http://www.sciencedirect.com/science/article/pii/S1049964424002226Host specificityParasitoidInsect pestSesamia nonagrioidesMaizeHost range |
| spellingShingle | Taiadjana M. Fortuna Loïc Colin-Duchevet Yanna Desreumaux Rémi Jeannette Manuel Le Gonnidec Bruno Le Ru Romane Mettauer Florence Mougel Laure Kaiser Non-target risk assessment of Cotesia typhae, a potential biological control agent of the Mediterranean corn borer Biological Control Host specificity Parasitoid Insect pest Sesamia nonagrioides Maize Host range |
| title | Non-target risk assessment of Cotesia typhae, a potential biological control agent of the Mediterranean corn borer |
| title_full | Non-target risk assessment of Cotesia typhae, a potential biological control agent of the Mediterranean corn borer |
| title_fullStr | Non-target risk assessment of Cotesia typhae, a potential biological control agent of the Mediterranean corn borer |
| title_full_unstemmed | Non-target risk assessment of Cotesia typhae, a potential biological control agent of the Mediterranean corn borer |
| title_short | Non-target risk assessment of Cotesia typhae, a potential biological control agent of the Mediterranean corn borer |
| title_sort | non target risk assessment of cotesia typhae a potential biological control agent of the mediterranean corn borer |
| topic | Host specificity Parasitoid Insect pest Sesamia nonagrioides Maize Host range |
| url | http://www.sciencedirect.com/science/article/pii/S1049964424002226 |
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