Effect of Cascade, Oriza sativa bran extract and Karate on fine structure of the ovary of Schistocerca gregaria.

Abstract

The ultrastructure changes in the ovarian follicle of normal adult females and those developed from treated 5 th nymphal instar of Schistocerca gregaria with LC 50 of anti-chitin compound (cascade), plant extract (Oriza sativa bran extract) and synthetic pyrethroid (Karate) were examined. In the present study electron micrographs of follicle cells of treated adult females with previous compounds showed a degeneration of ovarioles and oocytes .There is also evidence of mitochondrial disintegration. It is also noticed that vacuoles were increased and enlarged in follicle cells and yolk bodies were cracked mostly in two halves.

Latent Histopathological Effects of Lufenuron and Rice Bran Extract on Schistocerca Gregaria (Forskal) (Orthoptera: Acrididae)

“…6b). Our results agree with Hussein et al (2007) who showed that Rice bran extract caused histopathological effects on the muscles of the desert locust, also Bakr et al (2008) and Al-Zeeb et al (2018) reported that Lufenuron treatment caused malformation and degradation in the desert locust muscles. On the other hand, other IGRs as tebufenozide and Flufenoxuron Indicated disrupture in the muscle structure of the desert locust (Ghoneim et al, 2008 andBakr et al, 2008).…”

PHYSIOLOGICAL AND ULTRASTRUCTURE RESPONSES OF Schistocerca gregaria (FORSKAL) TO Metarhizium acridum AND FOUR BIO ACTIVE COMPOUNDS

“…These ultra structures point to an increase in the activity of follicular cells associated with the synthesis and secretion of egg precursors. Similarly, newly emerged 5th instar nymphs of S. gregaria treated with cascade, rice bran extract and karate, synthetic pyrethroids each at LC 50 produced disturbance in protein synthesis of the ovary, which reflected an inhibition of ovarian maturation and showed a degeneration of ovarioles and oocytes, disintegrated mitochondria, enlarged vacuoles and cracked yolk bodies mostly in two halves (John and James., 1989), (Ferenz., 1993) and (Hussein et al, 2008).…”