Larvicidal, ovicidal activities and histopathological alterations induced by Carum copticum (Apiaceae) extract against Culex pipiens (Diptera: Culicidae)

Journal Article

مستخلص المنشور

An experiment was carried out, firstly, to determine the possible toxicity of Carum copticum (Apiaceae)
extract against Culex pipiens (Diptera: Culicidae), and, secondly, to study the histopathological alterations
in the midgut of Cx. pipiens as a result of treatment with C. copticum extract. Larvicidal and ovicidal activities
of C. copticum extract against the larvae of Cx. pipiens was determined according to World health
organization (WHO). The inhibition effect of C. copticum was assessed by determining the mortality of
the treated larvae and eggs. The histopathological effect of the C. copticum extracts on midgut epithelium
of the larvae was examined under both light and transmission electron microscopy. The crude extract of
C. copticum exerted 100% mortality for Cx. pipiens after 24 h at 200 lm/ml, and zero hatchability (100%
mortality) at 150 lm/ml for Cx. pipiens. The histopathological study showed that larvae treated with C.
copticum extract had cytopathological alterations of the midgut epithelium. The study provided information
on various effects of C. copticum extract against Cx. pipiens.