Inhibited reproductive capacity of Egyptian cotton leaf worm Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) by the chitin synthesis inhibitor Novaluron.

Ghoneim, Karem; Tanani, M. A.; Hamadah, Kh.; Basiouny, A.; Waheeb, H

doi:10.21608/eajbsa.2014.13144

Egyptian Academic Journal of Biological Sciences. A, Entomology

2014

DOI: 10.21608/eajbsa.2014.13144

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Inhibited reproductive capacity of Egyptian cotton leaf worm Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) by the chitin synthesis inhibitor Novaluron.

Karem Ghoneim

M. A. Tanani

Kh. Hamadah

et al.

Abstract: www.eajbs.eg.net Inhibited reproductive capacity of Egyptian cotton leaf worm Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) by the chitin synthesis inhibitor Novaluron.

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Cited by 6 publications

References 60 publications

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Impairment of Development and Reproductivity of the Egyptian cotton leafworm Spodoptera littoralis Boisduval (Noctuidae: Lepidoptera) by Cycloheximide.

Basiouny

Ghoneim

2018

Egyptian Academic Journal of Biological Sciences. A, Entomology

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The Egyptian cotton leafworm, Spodoptera littoralis, is destructive pest of cotton and various crops in Egypt and some parts of the world. The present study was carried out aiming to assess the disruptive effects of cycloheximide on survival, growth, development, metamorphosis and reproductive potential of this pest. Four doses: 180, 120, 60 and 30 µg/larva had been topically applied (once) onto the newly moulted last instar larvae. cycloheximide exhibited toxic effect on larvae, pupae and adults. Unexpectedly, no mortality was observed at the highest dose. LD 50 was estimated at 0.013 µg/larva. The maximal weights of the treated larvae increased and the larval growth was remarkably enhanced. The larval and pupal durations were shortened. Some larvae appeared as 'giant larvae', only at the lower two doses. They enlarged in size and appeared heavier than other treated and control larvae. They survived 2-times longer period than of the control larvae and perished without pupation. Topical treatment of larvae only with the lower two doses induced a state of suspended development, 'permanent prepupae' which failed to pupate. Cycloheximide exerted an inhibitory action on the pupation rate after treatment only with the lower three doses. Some deformed pupae were produced. The adult emergence was considerably blocked at lower three doses. The oviposition was completely prevented, at the higher two doses, but partially inhibited at the lower two doses. No fecundity could be determined at the higher two doses because no oviposition was carried out. At the lower two doses, fecundity was dramatically reduced. All eggs failed to hatch indicating complete sterility of S. littoralis.

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Impairment of Development and Reproductivity of the Egyptian cotton leafworm Spodoptera littoralis Boisduval (Noctuidae: Lepidoptera) by Cycloheximide.

Basiouny

Ghoneim

2018

Egyptian Academic Journal of Biological Sciences. A, Entomology

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Disruptive Effects of Certain Chitin Synthesis Inhibitors on Adult Life Parameters and Reproductive Potential of the Pink Bollworm, Pectinophora gossypiella (Saunders)(Lepidoptera: Gelechidae).

Tanani

Ghoneim

2018

Egyptian Academic Journal of Biological Sciences. A, Entomology

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Deteriorated Adult Performance and Reproduction of the Greater Wax Moth, (Galleria mellonella (Lepidoptera: Pyralidae) by the Honey Bee Apitoxin

Ghoneim

Tanani

Hamadah

et al. 2019

Egyptian Academic Journal of Biological Sciences. A, Entomology

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The greater wax moth, Galleria mellonella is an important pest of wax combs of the honey bee in the world. The current investigation aimed to assess the effects of Apitoxin on the most important adult life parameters and reproduction of this pest. The freshly ecdysed 3 rd instar larvae were treated with a series of Apitoxin concentrations (4000, 2000, 1000, 500, 250, 125 ppm) via the artificial diet. The present results can be summarized as follows. The adult emergence was slightly blocked only at the higher three concentration levels. Apitoxin failed to affect both adult survival and morphogenesis. The total longevity was significantly shortened, in a dosedependent course. The ovarian maturation (pre-oviposition) period was prolonged, except the highest one at which this period was slightly shortened, as an odd datum. The reproductive lifetime (oviposition period) was remarkably shortened, in no certain trend. Also, the post-oviposition period was considerably shortened. Apitoxin exerted a diverse action on the reproductive efficiency of adult females since the oviposition rate was enhanced or inhibited, depending on the concentration, but in no certain trend. Both fecundity and fertility had been significantly reduced, in a dose-dependent course. The incubation period was considerably prolonged in a dose-dependent manner.

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Inhibited reproductive capacity of Egyptian cotton leaf worm Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) by the chitin synthesis inhibitor Novaluron.

Abstract: www.eajbs.eg.net Inhibited reproductive capacity of Egyptian cotton leaf worm Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae) by the chitin synthesis inhibitor Novaluron.

Cited by 6 publications

References 60 publications

Impairment of Development and Reproductivity of the Egyptian cotton leafworm Spodoptera littoralis Boisduval (Noctuidae: Lepidoptera) by Cycloheximide.

Impairment of Development and Reproductivity of the Egyptian cotton leafworm Spodoptera littoralis Boisduval (Noctuidae: Lepidoptera) by Cycloheximide.

Disruptive Effects of Certain Chitin Synthesis Inhibitors on Adult Life Parameters and Reproductive Potential of the Pink Bollworm, Pectinophora gossypiella (Saunders)(Lepidoptera: Gelechidae).

Deteriorated Adult Performance and Reproduction of the Greater Wax Moth, (Galleria mellonella (Lepidoptera: Pyralidae) by the Honey Bee Apitoxin

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