Study On Egg – Hatching And Nymph – Moulting Periodicity In The Desert LocustSchistocerca Gregaria (Forsk.)

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Date
2015-06-15
Authors
Mahmood Abrahim Mahmood
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Publisher
UOFK
Abstract
This study was conducted in the University of Khartoum, Faculty of Agriculture, Shambat in the insectary during the periods, December,2005 (winter time) and April,2006 (summer time) to investigate the hatching time (daily periodicity) of the eggs of the Desert Locust (Schistocercas gregaria) and also to investigate the moulting processes of the 1st instar and 2nd. Instar nymphs into 2nd . instar and 3rd . instar nymphs respectively, of this insect-whether they show a periodicity as well. The study revealed that, the hatching of the eggs of Desert Locust indicated through the appearance of young nymphs (emergence) on the soil surface, occurred during the early morning hours of the day (first break of the light period). A slight shift in hatching to ward early hours was noted in summer time, warm temperature probably a factor. With respect to the moulting processes of the nymphs there was no certain period for moulting as it continued over all day time, being more clear during daylight hours.
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Keywords
Desert Locust
Citation
University of khartoum
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