TITLE

Influence of Abamectin on Some Inorganic Ions in the Hemolymph of the Cotton Leafworm, Spodoptera littoralis (Biosd.)

AUTHOR(S)
Abd El-aziz, Nahla M.; Fahmy, Nedal M.
PUB. DATE
July 2015
SOURCE
Egyptian Journal of Biological Pest Control;2015, Vol. 25 Issue 2, p421
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A quantification of the main important inorganic ions; sodium, potassium, chloride and phosphate in the hemolymph of the cotton leafworm, Spodoptera littoralis (Biosd.), during 4th, 5th and 6th larval instars was carried out. Treatment of 4th instar larvae with LC50 abamectin, a natural fermentation product of the soil bacterium Streptomyces avermitilis, resulted in significant increase in sodium ion concentrations reaching its maximum level on the 3rd post-treatment. Also, phosphate ions increased significantly at all time intervals except on the 7th day it showed no change, while potassium ions decreased significantly only on the 1st day post-treatment. Chloride ions nearly remained constant as compared to untreated control larval hemolymph. The ratio of Na+/K+ increased in the hemolymph of the abamectin-treated larvae as compared with that of the control. In general, abamectin showed its maximum effect after the 3rd day post treatment in most cases.
ACCESSION #
112159258

 

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