Reproductive Potential Factors of Pectinophora gossypiella (Saund.) (Lepidoptera: Gelechiidae) and Coccinella undecimpunctata (L.) Affected by Certain Compounds
Egyptian Academic Journal of Biological Sciences F Toxicology & Pest Control
The journal of Toxicology and pest control is one of the series issued twice by the Egyptian Academic Journal of Biological Sciences, and is devoted to publication of original papers related to the interaction between insects and their environment. The goal of the journal is to advance the scientific understanding of mechanisms of toxicity. Emphasis will be placed on toxic effects observed at relevant exposures, which have direct impact on safety evaluation and risk assessment. The journal
... t. The journal therefore welcomes papers on biology ranging from molecular and cell biology, biochemistry and physiology to ecology and environment, also systematics, microbiology, toxicology, hydrobiology, radiobiology and biotechnology. www.eajbs.eg.net Provided for non-commercial research and education use. Not for reproduction, distribution or commercial use. ABSTRACT Article History Experiments were conducted under laboratory conditions to study certain biological aspects of the pink bollworm, Pectinophora gossypiella (Saund.), and (predacious insect) eleven spotted ladybird, Coccinella undecimpunctata (L.), when adult stage treated by half recommended concentrations of Emamectin benzoate, Lufenuron, and Chlorpyrifos. The mean numbers of deposited eggs were 103.0, 142.7, and 70.0 eggs/female treated by three compounds, respectively compared with 234.0 eggs/females in control. All treatments caused increased in the time required for all developmental stages of P. gossypiella resulted from adults' treatment with the three insecticides; in addition, total immature stage, life cycle, and generation time were increased in all treatments than control. Also, data recorded that emamectin benzoate, lufenuron, and chlorpyrifos; reduced the predator eggs hatchability to 56.0, 61.0, and 48% compared with 98.0% in control. On the other hand, data recorded that effect of three compounds on C. undecimpunctata (predacious insect), mean numbers of deposited eggs (fecundity) were 126.0, 133.0 and 99.0 eggs/female when the predacious insect treated by the three compounds, respectively, compared with 190.0 eggs/female in control.