Progeny fitness determines the performance of the parasitoid Therophilus javanus, a prospective biocontrol agent against the legume pod borer
Therophilus javanus (Bhat & Gupta) is an exotic larval endoparasitoid newly imported from Asia into Africa as a classical biological control agent against the pod borer Maruca vitrata (Fabricius). The parasitoid preference for the five larval instars of M. vitrata and their influence on progeny sex...
| Autores principales: | , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2021
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/113862 |
| _version_ | 1855513007777382400 |
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| author | Souna, D.A. Bokonon-Ganta, A.H. Ravallec, M. Alizannon, M. Srinivasan, R. Pittendrigh, B.R. Volkoff, A.N. Tamo, Manuele |
| author_browse | Alizannon, M. Bokonon-Ganta, A.H. Pittendrigh, B.R. Ravallec, M. Souna, D.A. Srinivasan, R. Tamo, Manuele Volkoff, A.N. |
| author_facet | Souna, D.A. Bokonon-Ganta, A.H. Ravallec, M. Alizannon, M. Srinivasan, R. Pittendrigh, B.R. Volkoff, A.N. Tamo, Manuele |
| author_sort | Souna, D.A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Therophilus javanus (Bhat & Gupta) is an exotic larval endoparasitoid newly imported from Asia into Africa as a classical biological control agent against the pod borer Maruca vitrata (Fabricius). The parasitoid preference for the five larval instars of M. vitrata and their influence on progeny sex ratio were assessed together with the impact of larval host age at the time of oviposition on development time, mother longevity and offspring production. In a choice situation, female parasitoids preferred to oviposit in the first three larval instars. The development of immature stages of the parasitoid was observed inside three-day-old hosts, whereby the first two larval instars of T. javanus completed their development as endoparasites and the third larval instar as ectoparasite. The development time was faster when first larval instars (two- and three-day-old) of the host caterpillars were parasitized compared to second larval instar (four-day-old). The highest proportion of daughters (0.51) was observed when females were provided with four-day-old hosts. The lowest intrinsic rate of increase (r) (0.21 ± 0.01), the lowest rate of increase (λ) (1.23 ± 0.01), and the lowest net reproductive rate (Ro) (35.93 ± 6.51) were recorded on four-day-old hosts. These results are discussed in the light of optimizing mass rearing and release strategies. |
| format | Journal Article |
| id | CGSpace113862 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace1138622025-12-08T09:54:28Z Progeny fitness determines the performance of the parasitoid Therophilus javanus, a prospective biocontrol agent against the legume pod borer Souna, D.A. Bokonon-Ganta, A.H. Ravallec, M. Alizannon, M. Srinivasan, R. Pittendrigh, B.R. Volkoff, A.N. Tamo, Manuele biological control biological control agents maruca vitrata cowpeas plant diseases plant production plant health Therophilus javanus (Bhat & Gupta) is an exotic larval endoparasitoid newly imported from Asia into Africa as a classical biological control agent against the pod borer Maruca vitrata (Fabricius). The parasitoid preference for the five larval instars of M. vitrata and their influence on progeny sex ratio were assessed together with the impact of larval host age at the time of oviposition on development time, mother longevity and offspring production. In a choice situation, female parasitoids preferred to oviposit in the first three larval instars. The development of immature stages of the parasitoid was observed inside three-day-old hosts, whereby the first two larval instars of T. javanus completed their development as endoparasites and the third larval instar as ectoparasite. The development time was faster when first larval instars (two- and three-day-old) of the host caterpillars were parasitized compared to second larval instar (four-day-old). The highest proportion of daughters (0.51) was observed when females were provided with four-day-old hosts. The lowest intrinsic rate of increase (r) (0.21 ± 0.01), the lowest rate of increase (λ) (1.23 ± 0.01), and the lowest net reproductive rate (Ro) (35.93 ± 6.51) were recorded on four-day-old hosts. These results are discussed in the light of optimizing mass rearing and release strategies. 2021 2021-06-04T15:11:37Z 2021-06-04T15:11:37Z Journal Article https://hdl.handle.net/10568/113862 en Open Access application/pdf Springer Souna, D.A., Bokonon-Ganta, A.H., Ravallec, M., Alizannon, M., Srinivasan, R., Pittendrigh, B. R., ... & Tamò, M. (2021). Progeny fitness determines the performance of the parasitoid Therophilus javanus, a prospective biocontrol agent against the legume pod borer. Scientific Reports, 11(1), 1-10. |
| spellingShingle | biological control biological control agents maruca vitrata cowpeas plant diseases plant production plant health Souna, D.A. Bokonon-Ganta, A.H. Ravallec, M. Alizannon, M. Srinivasan, R. Pittendrigh, B.R. Volkoff, A.N. Tamo, Manuele Progeny fitness determines the performance of the parasitoid Therophilus javanus, a prospective biocontrol agent against the legume pod borer |
| title | Progeny fitness determines the performance of the parasitoid Therophilus javanus, a prospective biocontrol agent against the legume pod borer |
| title_full | Progeny fitness determines the performance of the parasitoid Therophilus javanus, a prospective biocontrol agent against the legume pod borer |
| title_fullStr | Progeny fitness determines the performance of the parasitoid Therophilus javanus, a prospective biocontrol agent against the legume pod borer |
| title_full_unstemmed | Progeny fitness determines the performance of the parasitoid Therophilus javanus, a prospective biocontrol agent against the legume pod borer |
| title_short | Progeny fitness determines the performance of the parasitoid Therophilus javanus, a prospective biocontrol agent against the legume pod borer |
| title_sort | progeny fitness determines the performance of the parasitoid therophilus javanus a prospective biocontrol agent against the legume pod borer |
| topic | biological control biological control agents maruca vitrata cowpeas plant diseases plant production plant health |
| url | https://hdl.handle.net/10568/113862 |
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