The roles of anti-juvenile hormone (precocene II) on phase changes and pheromone production were examined in laboratory-bred gregarious desert locust, Schistocerca gregaria. Precocene II was applied to last instar nymphs and newly emerged adults in gregarious phase. Generally, the 5 th instar nymphs exhibited a higher sensitivity to topical application of precocen II than the adults. In contrast, the adults exhibited a higher sensitivity to injection of precocen II in comparison to 5 th instar nymphs. Topical application or injection of precocene II inhibited pheromone production (as measured by the amount of phenylacetonitrile released). Both topical application to 5 th instar nymphs and injection to adults affected the external body coloration, sexual behavior and mating of gregarious adult males, S. gregaria in comparison to control insects.
CITATION STYLE
Tawfik, A. I., Osir, E. O., & Hassanali, A. (2014). Effects of Anti-Juvenile Hormone (Precocene II) Treatment on Phase Changes and Pheromone Production in the Desert Locust, Schistocerca gregaria (Forskal) (Orthoptera: Acrididae). The Open Entomology Journal, 7(1), 10–16. https://doi.org/10.2174/1874407901408010010
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