The Susceptibility of Aphids, Aphis gossypii Glover to Lauric Acid Based Natural Pesticide

The susceptibility of aphids to lauric acid, a type of middle-chain fatty acids, based pesticide formulation was investigated. The insecticidal properties of lauric acid based pesticide formulation against aphids were evaluated through the three main routes of exposure: topical application, leaf-dip...

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Main Authors:	Sharifah Fathiyah, Sy Mohamad, Shahril, Mohamad, Azila, Abdul Aziz
Format:	Article
Language:	English
Published:	Elsevier Ltd 2013
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/6299/ http://umpir.ump.edu.my/id/eprint/6299/ http://umpir.ump.edu.my/id/eprint/6299/ http://umpir.ump.edu.my/id/eprint/6299/1/fkksa-2013-fathiya-susceptibility_of_Aphids_abs_only.pdf

id	ump-6299
recordtype	eprints
spelling	ump-62992018-02-06T03:42:31Z http://umpir.ump.edu.my/id/eprint/6299/ The Susceptibility of Aphids, Aphis gossypii Glover to Lauric Acid Based Natural Pesticide Sharifah Fathiyah, Sy Mohamad Shahril, Mohamad Azila, Abdul Aziz TP Chemical technology The susceptibility of aphids to lauric acid, a type of middle-chain fatty acids, based pesticide formulation was investigated. The insecticidal properties of lauric acid based pesticide formulation against aphids were evaluated through the three main routes of exposure: topical application, leaf-dipping (ingestion) and inhalation. Surface tension dependent aphids toxicity was also investigated by measuring the surface tension value of each formulation prepared. The relationship of surface tension and formulation toxicity was then observed on aphid tested. The obtained results indicate that all tested formulations had insecticidal activity against tested aphids depending on exposure method and lauric acid concentration. The topical application method recorded 100% mortality rates compared to the other two methods. With topical application method, most of the aphids died soon after treatment. Toxicity symptoms from lauric acid to aphids included unusual abdominal contractions which caused quick loss of coordination and decreased activity, and finally dehydration and necrosis within 24 hours. Results from surface tension study revealed close connection between toxicity and surface tension. This might lead to the conclusion that toxicity was possibly related to aphid suffocation in the highly wettable solution. Results from this research also demonstrated that there were possibility that lauric acid do not only kill aphids by suffocation, but also through change of cuticle and cell permeability and desiccation that lead to speedy death due to the chemical nature of lauric acid. Overall, the results recommend that lauric acid based pesticide formulation has both physical and chemical mode of action on aphids. Elsevier Ltd 2013 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/6299/1/fkksa-2013-fathiya-susceptibility_of_Aphids_abs_only.pdf Sharifah Fathiyah, Sy Mohamad and Shahril, Mohamad and Azila, Abdul Aziz (2013) The Susceptibility of Aphids, Aphis gossypii Glover to Lauric Acid Based Natural Pesticide. Procedia Engineering, 53. pp. 20-28. ISSN 1877-7058 http://dx.doi.org/10.1016/j.proeng.2013.02.004 DOI: 10.1016/j.proeng.2013.02.004
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Sharifah Fathiyah, Sy Mohamad Shahril, Mohamad Azila, Abdul Aziz The Susceptibility of Aphids, Aphis gossypii Glover to Lauric Acid Based Natural Pesticide
description	The susceptibility of aphids to lauric acid, a type of middle-chain fatty acids, based pesticide formulation was investigated. The insecticidal properties of lauric acid based pesticide formulation against aphids were evaluated through the three main routes of exposure: topical application, leaf-dipping (ingestion) and inhalation. Surface tension dependent aphids toxicity was also investigated by measuring the surface tension value of each formulation prepared. The relationship of surface tension and formulation toxicity was then observed on aphid tested. The obtained results indicate that all tested formulations had insecticidal activity against tested aphids depending on exposure method and lauric acid concentration. The topical application method recorded 100% mortality rates compared to the other two methods. With topical application method, most of the aphids died soon after treatment. Toxicity symptoms from lauric acid to aphids included unusual abdominal contractions which caused quick loss of coordination and decreased activity, and finally dehydration and necrosis within 24 hours. Results from surface tension study revealed close connection between toxicity and surface tension. This might lead to the conclusion that toxicity was possibly related to aphid suffocation in the highly wettable solution. Results from this research also demonstrated that there were possibility that lauric acid do not only kill aphids by suffocation, but also through change of cuticle and cell permeability and desiccation that lead to speedy death due to the chemical nature of lauric acid. Overall, the results recommend that lauric acid based pesticide formulation has both physical and chemical mode of action on aphids.
format	Article
author	Sharifah Fathiyah, Sy Mohamad Shahril, Mohamad Azila, Abdul Aziz
author_facet	Sharifah Fathiyah, Sy Mohamad Shahril, Mohamad Azila, Abdul Aziz
author_sort	Sharifah Fathiyah, Sy Mohamad
title	The Susceptibility of Aphids, Aphis gossypii Glover to Lauric Acid Based Natural Pesticide
title_short	The Susceptibility of Aphids, Aphis gossypii Glover to Lauric Acid Based Natural Pesticide
title_full	The Susceptibility of Aphids, Aphis gossypii Glover to Lauric Acid Based Natural Pesticide
title_fullStr	The Susceptibility of Aphids, Aphis gossypii Glover to Lauric Acid Based Natural Pesticide
title_full_unstemmed	The Susceptibility of Aphids, Aphis gossypii Glover to Lauric Acid Based Natural Pesticide
title_sort	susceptibility of aphids, aphis gossypii glover to lauric acid based natural pesticide
publisher	Elsevier Ltd
publishDate	2013
url	http://umpir.ump.edu.my/id/eprint/6299/ http://umpir.ump.edu.my/id/eprint/6299/ http://umpir.ump.edu.my/id/eprint/6299/ http://umpir.ump.edu.my/id/eprint/6299/1/fkksa-2013-fathiya-susceptibility_of_Aphids_abs_only.pdf
first_indexed	2023-09-18T22:01:56Z
last_indexed	2023-09-18T22:01:56Z
_version_	1777414456611962880

The Susceptibility of Aphids, Aphis gossypii Glover to Lauric Acid Based Natural Pesticide

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