Effects of pyridalyl and emamectin benzoate on some biological and biochemical parameters of Spodoptera littoralis (Boisd.) and Albino rat.

Abstract

The present investigation aimed to throw light on the efficiency of two novel insecticides, pyridalyl and emamectin benzoate(contact), a semi-synthetic insecticide on two different larval instars (2 nd and 4 th) of the cotton leafworm, Spodoptera littoralis (Lepidaptera: Noctuidae). Also to study their toxic affects on some biochemical parameters on albino rat. The results clearly showed that pyridalyl was more toxic than emamectin benzoate against the 2 nd and 4 th larval instar according to LC 50 values after all time post exposure (2, 3, 5 and 7 days). In addition the two tested compound decreased pupal weight, pupation and adult emergence percentages resulted from larvae treated with different concentrations of these insecticides as 2 nd and 4 th larval instars. The present study also animals were treated orally with (1/10 LD 50) of each compound done by using sixty male adult albino rats were divided into three groups .First group "control" was received distilled water daily, second group were received repeated oral administration of 0.07mg/animal/day of pyridalyl and third group were received repeated oral administration of 2.5 mg/animal / day of emamectin benzante for 28 consecutive days. The results showed that there were significant increases of ALT, AST, urea and creatinine in the treatment of Pyridalyl more than emamectin benzante and control. On the other hand there were significant decreases in protein content in the treatment of Pyridalyl more than E. benzante on comparison with control. Conclusion: The results indicated the toxic nature of the insecticide pyridalyl is more than E. benzante on Spodoptera littoralis and albino rats so we suggest that usage of E. benzante although it less toxic to save environment.

Bee Pollen Alleviates Fipronil and Emamectin Benzoate Induced- Hepatorenal Toxicity in Rats

“…In the present study, oral administration of FIP and EMB to rats for 2 months provoked significant elevations in serum ALT and AST activities; urea and creatinine levels as previously reported by (Abdel-Hafez and Osman, 2013;Mossa et al, 2015;Khaldoun-Oularb et al, 2015Abdel-Daim and Abdeen, 2018). The aforementioned results reflectthe increase in membrane permeability of the damaged hepatocytes (Plaa and Hewitt, 1982) and the reduction in the glomerular filtration in kidney (Walmsley and White, 1994) that may be attributed mainly to the recorded peroxidative effects of FIP and EMB.…”

Hematological and histopathological impacts of nano-emamectin benzoate against the larvae of the cotton leafworm, Spodoptera littoralis (Boisduval) (Lepidoptera: Noctuidae) under laboratory conditions

“…This reduction may be due to the possible accumulation of the tested formulae in the larvae that survived treatment that has adversely affected the insect metamorphosis during its life span [30,42]. Our results were agreed with [3,4,9,20,33], who tested EMB and nanopesticides against different insects. Furthermore, compared to control, the total hemocyte counts have reduced in larvae that survived treatment with LC 50 of EMB, AgNPs, and EMB + AgNPs.…”