Effect of a low cost diet on the cotton leaf worm, Spodoptera littoralis nucleopolyhedrosis virus pathogenicity and sterile insect technique

Citation:
Sayed, W., A. E. Helaly, Z. Jamal, and H. El-Bendary, Effect of a low cost diet on the cotton leaf worm, Spodoptera littoralis nucleopolyhedrosis virus pathogenicity and sterile insect technique, , vol. 31, 2021/12/01.

Abstract:

BackgroundMass rearing cost of Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) is one of the critical methods for the successful utilization of Baculovirus pathogenicity and sterile insect technique (SIT). Effectiveness of both SIT and S. littoralis Nucleopolyhedrosis Virus ( Spli NPV) was assessed in response to plant-based diet and substitution of agar with commercial sources of gelling components as feed.
Results
Pupal and adult recoveries produced by castor bean leaves were significantly high, followed by the agar-based diet. Moreover, larval durations were significantly prolonged for (starch + gelatin)-based diet than the other dietary diets. Obviously, Spli NPV pathogenicity against the larvae reared on (starch + gelatin)-based diet was 2.5 and 2 times higher than those reared on castor leaves and agar-based diet, respectively. Contrary to expectation, the sterility doses of male moths produced by castor leaves and agar-based diet were relatively similar.
Conclusion
The findings suggest that the lowest cost diets (starch + gelatin)-based diet could be used effectively for increasing the Spli NPV pathogenicity, while either castor leaves or agar-based diet could be considered as a promising choice for SIT program.

Notes:

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