Effect of certain insect growth regulators on the lipid
content of some tissues of the desert locust Schistocerca
Hamadah Kh.Sh.*, Ghoneim K.S. and Tanani M.A.
Department of Zoology, Faculty of Science, Al-Azhar
University, Madenit Nasr, Cairo, Egypt.
*Corresponding author. E-mail:
email@example.com. Tel: 01224909904, 01149564795.
Accepted 24 April, 2012
The present study was carried out to investigate the
metabolic effects of pyriproxyfen, tebufenozide or lufenuron
on the lipid content in two different tissues: hemolymph and
fat body of the early-, mid- and late-aged old nymphs as
well as 1- and 4-days old adult females. Hemolymph lipid
content of the early-aged nymphs had been subjected to a
reducing effect after treatment with high concentration of
insect growth regulators (IGRs). With the age of nymphs, all
IGRs could significantly or non-significantly reduce the
lipid content of hemolymph. Concerning the lipid content in
fat bodies of nymphs, a predominant inhibitory effect of all
IGRs was detected. With regard to the adults, nymph
treatments led to remarkable or slightly decreased lipids in
the hemolymph, as an exceptional case; because the lipid
content non-significantly increased in 4-day old adults
after treatment with low concentration level of lufenuron.
The current IGRs unexceptionally exhibited inhibitory
effects on the lipids of adult fat bodies.
Schistocerca gregaria, lipids, fat body, hemolymph,
nymph, adult, pyriproxyfen, tebufenozide, lufenuron.