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EFFECT OF ALLELOCHEMICALS AGAINST THIRD INSTAR LARVAE OF MUSCA DOMESTICS L. (MALIR STRAIN)

Nizam, Seema (1991) EFFECT OF ALLELOCHEMICALS AGAINST THIRD INSTAR LARVAE OF MUSCA DOMESTICS L. (MALIR STRAIN). PhD thesis, University of Karachi, Karachi.

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Abstract

Against third instar larvae of Musca domestica L. (Malir strain) the LC50s of malathion, dimilin, NfB and nimocinol were 0.33% , 0.14% 0.15% and 1.06% respectively. Mortality ranges (α = 0.05) were directly proportional to the concentration of the compounds. The LC50s of neem extracts are higher than that of an insect growth regulator (IGR) dimilin. The lower LC50 of N f B in comparison to that of malathion, Strengthens the presence of resistance in M. domestica larvae against malathion, as reported by Akhtar (1989). All the compounds produced morphological abnormalities at LC50 doses. The total protein content, cholinesterase and total esterase were activated by malathion, While inhibited by other compounds. The activities of acid and alkaline phosphatases, glutamate oxalo acetate transaminase, glutamate pyravate transaminase and lactate dehydrogenase were inhibited by all the four compounds. The inhibition of protein is comparatively less by malathion than other compounds by HPLC. The percentage recovery of N f B, nimocinol, dimilin and malathion were 60%, 36% 20, and 10% respectively form the treated insects, through HPLC. Comparatively lower recovery of malathion confirms earlier report of the resistance to the chemical(Akhtar, 1989). Recovery of malathion by GLC(only 10%) further supports the phenomenon.

Item Type:Thesis (PhD)
Uncontrolled Keywords:allelochemicals, musca domestics l. (malir strain), malathion, of n f b, nimocinol, dimilin, hplc
Subjects:Biological & Medical Sciences (c) > Biological Sciences(c1) > Paleo-zoology(c1.10)
ID Code:1119
Deposited By:Mr. Muhammad Asif
Deposited On:03 Jan 2007
Last Modified:04 Oct 2007 21:04

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