Abstract

Ethanol extracts of leaves and flowers from Algerian Borago officinalis L. (Polemoniales: Boraginaceae) were evaluated against fourth instar larvae (L4) of Culex pipiens L. (Diptera: Culicidae). The larvicidal bioassay revealed that leaves extracts (LC50 = 2.49%) exhibited higher activity than flowers extracts (LC50 = 2.55%) against L4. Moreover, females were found more sensitive compared to males (sex-ratio was skewed towards males). On the other hand, the flower extract caused marked delayed effects on growth (decrease of female weight) and development (increase in duration of larval and pupal stages). The biochemical analyses showed a decrease in carbohydrate and lipid contents and an increase in protein levels in all tested stages (L4, pupa and adults male and female), with more significance in females.

Information

Item Type:	Journal
Divisions:	» Laboratory sciences and technical water and environment » Faculty of Natural Sciences and Life
ePrint ID:	2800
Date Deposited:	2021-10-10
Further Information:	Google Scholar
URI:	https://www.univ-soukahras.dz/en/publication/article/2800

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