English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

This study aimed to know the effect of different concentrations of cold water extract of Petroselinum crispum leaves on Culex pipiens instars and find the half lethal concentration (LC50). The results showed that the third instar of C. pipiens were more effective by cold water extract than first, second, and fourth instar after 24 hours from exposure to different concentrations (250, 300, 350, 400) mg/l. Results appeared that the percentage of mortalities after 24 hours from exposure to cold water extracts were (37, 44, 67, 85) %, (26, 41, 67, 78) %, (42, 65, 77, 92) % and (16, 32, 52, 89) % with LC50 (300), (319), (267) and (333) mg/l for first, second, third, and fourth instar of C. pipiens respectively. Also, the results didn’t show a significant differentiation in level of probability 0.05, but appeared positive correlation coefficient between the percentage of mortalities and the concentrations, and negative correlation coefficient between the percentage of survival and the concentrations. 1-Introduction Many studies try to find the natural compounds working as insecticides to many insects especially mosquitoes and didn’t cause death to many life forms and serve the economy. As well as they could be unharmed on environment and effective on target when they used on water environment and with lower rate of pollution and highly degradation with fewer non-target organisms [1]. For that many researchers were digging to find these compounds in plants and in few cases in animals. Parsely plant (Petroselinum crispum) is a member of the family of Umbelliferae (Apiaceae) which is the same family of celery, natively from Mediterranean region and cultivated in many various parts of the world [2]. It’s a herb that has compound leaves and clustered white flowers in groups with umbrella shape fruit compound. Parsley has aromatic odor and shining green leaves which have high chlorophyll and rich with vitamins such as vitamin C and minerals such as iodine, iron, and others [3]. Mosquitoes belong to the family Culicidae and the order Diptera. They are the most important arthropod vectors that caused human and animals’ diseases and can be found in all tropical and subtropical countries [4]. The Culex pipiens is a species which belongs to subfamily of Culicinae where the instars hanging down under the water surface by their siphon [1]. The study aimed to find the possibility of using cold water extract of leaves of parsely plant P. crispum to control instars of C. pipiens mosquitoes by using four stages of instar (first and fourth instar) that can be growth and development to adult in aquatic environment and find if possible LC50 for each instar after exposure to different concentrations of extract. 2-Materials and methods 1.2 Breeding of insect Similar method of [5] and way of [6] have been used. The egg rafts of C. pipiens mosquitoes have been collected from some pools of standing drainage water in the Province of Babylon and transformed to the laboratory in a plastic glass filled with water during the period from 1-7-2017 to 1-2-2018. The egg rafts transformed to the beaker that filled with water waiting to hatch. After that the diet which is composed of yeast and bran flour has been added. Journal of University of Babylon for Pure and Applied Sciences (JUBAS) by University of Babylon is licened under a Creative Commons Attribution 4.0 International License. 2018.

Study the Effect of Cold Water Extracts of Petroselinum crispum Leaves on Culex pipiens Instars