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Relative toxicity and haematological impact of insecticides cypermethrin and Fenvalerate to a non - target reduviid predator Rhynocoris marginatus (Fabricius) (Heteroptera: Reduviidae)
Journal of Entomology and Zoology Studies · 2021 · Vol. 9(1) · pp. 2040–2043
PJ Edward George✉(St. Xavier's College (Autonomous))Balachandran Ravichandran(M S Ramaiah Memorial Hospital)A Jesudurai(Kalasalingam Academy of Research and Education)Dunston P. Ambrose(St. Xavier's College (Autonomous))
Abstract
Relative toxicity of two commonly used insecticides namely cypermethrin (Cymbush 10 EC) and fenvalerate (Sumicidin 20 EC) to the non - target reduviid predator Rhynocoris marginatus was evaluated. Among the two insecticides tested, fenvalerate was more toxic than cypermethrin. Both cypermethrin and fenvalerate increased the number of prohaemocytes and granular haemocytes and decreased the plasmatocytes. They also caused changes in the density of cystocytes and oenocytoids. Though both the insecticides increased the total haemocyte counts, highest impact was caused by fenvalerate.
Hemiptera Insect StudiesInsect Pest Control StrategiesInsect Resistance and GeneticsFenvalerateCypermethrinBiologyToxicologyHeteropteraReduviidaePredatorPyrethroidPesticideBotany
Citations
2
FWCI
0.36
field-weighted impact
References
7
Percentile
72%
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