Laminou, S A and Karimoune, L and Ba, M N (2026) Parasitism by Telenomus remus Nixon on cold-stored eggs of Spodoptera frugiperda J.E. Smith and parasitic performance of T. remus emerging from pupae following cold storage. Biocontrol Science and Technology, 36 (3). pp. 379-388. ISSN 0958-3157
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Telenomus remus Nixon is being explored as a candidate for managing the fall armyworm, Spodoptera frugiperda (J.E. Smith), in biocontrol approaches. However, its utilisation in augmentative/inundative releases requires large numbers that are difficult to produce. Cold storage of either the host's eggs or pupae of T. remus has emerged as a viable method to facilitate large-scale production in synchronised field releases. This research investigates the impacts of storage at 9°C on S. frugiperda eggs and T. remus pupae at varying durations. Findings indicated that while T. remus can parasitise stored S. frugiperda eggs, the parasitism rate significantly declined between 1.66 to 6.53 times after periods of 7 to 14 days compared to freshly parasitised eggs. Notably, successful parasitism dropped to 27% after 14 days of storage of eggs at 9°C, and no parasitism was recorded after 21 and 28 days. Moreover, storing S. frugiperda host eggs at 9°C does not impair the parasitism abilities of subsequent T. remus generations. At the same time, its pupae (8 days after parasitisation) can remain viable for up to 7 days storage at 9°C without adverse effects.
| Item Type: | Article |
|---|---|
| Divisions: | Research Program : West & Central Africa |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | Telenomus remus, Spodoptera frugiperda, biological control, cold storage |
| Subjects: | Others > Entomology |
| Depositing User: | Mr Nagaraju T |
| Date Deposited: | 30 Apr 2026 05:21 |
| Last Modified: | 30 Apr 2026 05:21 |
| URI: | http://oar.icrisat.org/id/eprint/13616 |
| Official URL: | https://www.tandfonline.com/doi/abs/10.1080/095831... |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | The authors thank Soumana Yero, Abdoulaye Maoudé, and Ibrahim Moussa for maintaining insect colonies. |
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