Biological studies on the Seychelles fluted scale mealy bug, Icerya seycltellarum (Westwood)on seedlings of mulberry (Mours alba L.) under laboratory conditions [electronic resource].

Includes references.

This study was suggested to determine some biological aspects of this pest under laboratory conditions on Mulberry seedlings. Obtained results .can be summarizes as follows: The first, second and third nymphal instars lasted for 13-48, 9-65 and 23-88 days, respectively according to generation. Pre-ovipostion, oviposition and post-oviposition periods were 20-49, 48-199 and 7-29 days, respectively. Oviposition periods greatly influenced with prevailing laboratory temperature and humidity. Pre-oviposition period was negatively affected with temperature and vice versa for each of oviposition period and post-oviposition period. Highest fecundity per female recorded in the second generation whereas lowest one took place in the first generation. The longest longevity average occurred in first generation followed by that in the second generation .. Incubation period averages were nearly similar in both generations. Total life cycle completed in 217-376 days in first generation and 180-384 in that of the second generation. Key words: Biological studies, mealybug, Icerya seychellarum, Mulberry, Mours alba L.

Summary in Arabic.

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