E-ISSN 2090-0503 | ISSN 2090-0511
 

Original Research 


Evaluation of the insecticidal and antifeedant activities of some seaweed extracts against the Egyptian cotton leaf worm, Spodoptera littoralis, and the lesser grain borer Rhyzopertha dominica

hanaa elbrense, saley Gheda.

Abstract
Environmental safety and agricultural sustainability are important for survival on the Earth. Spedoptera littoralis and Rhyzopertha dominica are among the most destructive pests for economic crops in Egypt. Indiscriminate use of chemical pesticides called for safe alternatives. seaweeds are among these alternatives Hence, it is imperative to evaluate the efficacy of (Sargassum acinarium, Turbinaria turbinata, Petrocladia capillacea, and Cystoseira myrica ) extracts against S. littorlais third and fifth instar larvae and R. dominica adults. The seaweed extracts-insect contact method was used. Also the antifeediant activities of the tested sea weeds were recorded. All tested seaweeds exhibited insecticidal and antifeediant activities with S.littoralis third instar larvae being more susceptible. T. turbinata and P. capillacea exhibited the highest insecticidal and antifeddiant effects, respectively. C. myrica showed the lowest insecticidal and antifeediant activities at all. There was a direct relationship between the percent mortalities and seaweed concentrations. Sea weeds gas chromatogra¬phy-mass spectrometry analyses revealed different bioactive compounds, which might be responsible for their insecticidal properties.. finally the tested seaweeds can be used as ecofriendly and safe biopes¬ticides for control of S. littoralis and R. dominica and we recommend them to be involved in integrated pest management program.

Key words: Spedoptera littoralis, Rhyzopertha dominica, seaweeds, insecticidal activity, antifeediant activity , bioinsecticides


 
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Pubmed Style

elbrense h, Gheda s. Evaluation of the insecticidal and antifeedant activities of some seaweed extracts against the Egyptian cotton leaf worm, Spodoptera littoralis, and the lesser grain borer Rhyzopertha dominica. Egypt. J. Exp. Biol. (Zoo.). 2021; 17(1): 1-17. doi:10.5455/egysebz.20201218092110


Web Style

elbrense h, Gheda s. Evaluation of the insecticidal and antifeedant activities of some seaweed extracts against the Egyptian cotton leaf worm, Spodoptera littoralis, and the lesser grain borer Rhyzopertha dominica. http://www.egyseb.net/ejebz/?mno=32517 [Access: October 26, 2021]. doi:10.5455/egysebz.20201218092110


AMA (American Medical Association) Style

elbrense h, Gheda s. Evaluation of the insecticidal and antifeedant activities of some seaweed extracts against the Egyptian cotton leaf worm, Spodoptera littoralis, and the lesser grain borer Rhyzopertha dominica. Egypt. J. Exp. Biol. (Zoo.). 2021; 17(1): 1-17. doi:10.5455/egysebz.20201218092110



Vancouver/ICMJE Style

elbrense h, Gheda s. Evaluation of the insecticidal and antifeedant activities of some seaweed extracts against the Egyptian cotton leaf worm, Spodoptera littoralis, and the lesser grain borer Rhyzopertha dominica. Egypt. J. Exp. Biol. (Zoo.). (2021), [cited October 26, 2021]; 17(1): 1-17. doi:10.5455/egysebz.20201218092110



Harvard Style

elbrense, h. & Gheda, . s. (2021) Evaluation of the insecticidal and antifeedant activities of some seaweed extracts against the Egyptian cotton leaf worm, Spodoptera littoralis, and the lesser grain borer Rhyzopertha dominica. Egypt. J. Exp. Biol. (Zoo.), 17 (1), 1-17. doi:10.5455/egysebz.20201218092110



Turabian Style

elbrense, hanaa, and saley Gheda. 2021. Evaluation of the insecticidal and antifeedant activities of some seaweed extracts against the Egyptian cotton leaf worm, Spodoptera littoralis, and the lesser grain borer Rhyzopertha dominica. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology), 17 (1), 1-17. doi:10.5455/egysebz.20201218092110



Chicago Style

elbrense, hanaa, and saley Gheda. "Evaluation of the insecticidal and antifeedant activities of some seaweed extracts against the Egyptian cotton leaf worm, Spodoptera littoralis, and the lesser grain borer Rhyzopertha dominica." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) 17 (2021), 1-17. doi:10.5455/egysebz.20201218092110



MLA (The Modern Language Association) Style

elbrense, hanaa, and saley Gheda. "Evaluation of the insecticidal and antifeedant activities of some seaweed extracts against the Egyptian cotton leaf worm, Spodoptera littoralis, and the lesser grain borer Rhyzopertha dominica." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology) 17.1 (2021), 1-17. Print. doi:10.5455/egysebz.20201218092110



APA (American Psychological Association) Style

elbrense, h. & Gheda, . s. (2021) Evaluation of the insecticidal and antifeedant activities of some seaweed extracts against the Egyptian cotton leaf worm, Spodoptera littoralis, and the lesser grain borer Rhyzopertha dominica. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Zoology), 17 (1), 1-17. doi:10.5455/egysebz.20201218092110