Skip to main content

Insecticidal Activity of Four Essential Oils on the Survival and Oviposition of Two Sympatric Bruchid Species: Callosobruchus maculatus F. and Callosobruchus subinnotatus PIC. (Coleoptera: Chrysomelidea: Bruchinae) | Chapter 05 | Current Research in Agriculture and Horticulture Vol. 1

Callosobruchus maculatus F. and Callosobruchus subinnotatus Pic. are two pest species of stored cowpeas and bambara groundnuts. Methods of controlling their populations remain the use of chemical insecticides that have ecotoxicological effects. The aim of this work is to look for alternative methods using essential oils extracted from four aromatic plants (Bidens borianiana, Chromolaena odorata, Cymbopogon giganteus and Cymbopogon nardus) to control these pests. Essential oils GC/MS analysis revealed differences in their composition. The major components of the essential oils of the two congeneric Poaceae species C. giganteus and C. nardus are totally different. Limonene (23.03%), cis-p-mentha-2, 8-dien-1-ol (14.26%) and p-mentha-1(7), 8-dien-2-ol isomer (14.06%) were the main compounds in C. giganteus oil whereas citronellal (30.58%) and geraniol (23.93%) were identified in C. nardus oil. In the essential oils of the other two plants, the major components are respectively geyrene (19.44%), α-pinene (15.96%), and germacrene D (14.03%) for Chromolaena odorata essential oil and trans-β-ocimene (31.58%) for Bidens borianiana essential oil. Toxicity tests were performed by fumigation on adult survival and female oviposition in C. maculatus and C. subinnotatus by evaluating the LD10; LD50 and LD90 of the four essential oils. These tests showed that only essential oils extracted from Cymbopogon species are efficient. The essential oil of C. giganteus was the most toxic to adults of both bruchid species. The LD50 were 20.06 and 34.62 µL/L, respectively for C. maculatus and C. subinnotatus while C. nardus essential oil showed the best ovicidal activity with female oviposition reduction in both bruchid species of more than 80% at a lower concentration (10 µL/L). C. giganteus and C. nardus essential oils can thus be used in stocks of cowpea and bambara groundnuts for adult control and prevent female oviposition.

Author(s) Details

Dr. Seth W. Nyamador
Applied Entomology Laboratory, Faculty of Sciences, University of Lomé, Lomé, Togo

Dr. Abla D. Mondédji
Applied Entomology Laboratory, Faculty of Sciences, University of Lomé, Lomé, Togo.

Boris D. Kasseney
Applied Entomology Laboratory, Faculty of Sciences, University of Lomé, Lomé, Togo.

Guillaume K. Ketoh
Applied Entomology Laboratory, Faculty of Sciences, University of Lomé, Lomé, Togo.

Honoré K. Koumaglo
Plant Extracts and Natural Aromas Laboratory, Faculty of Sciences, University of Lomé, Lomé, Togo.

Isabelle A. Glitho
Applied Entomology Laboratory, Faculty of Sciences, University of Lomé, Lomé, Togo.

View Book: http://bp.bookpi.org/index.php/bpi/catalog/book/124
Labels:

Comments

Post a Comment

Popular posts from this blog

Greening Regional Airports: A Vision for Carbon Neutral Infrastructure | Chapter 12 | Contemporary Perspective on Science, Technology and Research Vol. 3

 This study provides an overview of the energy demand of a regional airport, divided into individual time horizons. The electrification of aircraft systems raises the question of whether airports will be among the largest electricity consumers in our infrastructure in the future. Sustainability and especially emission reductions are significant challenges for airports that are currently being addressed. The Clean Sky 2 project GENESIS addresses the environmental sustainability of hybrid-electric 50-passenger aircraft systems in a life cycle perspective to support the development of a technology roadmap for the transition to sustainable and competitive electric aircraft systems. This article originates from the GENESIS research and describes various options for ground power supply at a regional airport. Potential solutions for airport infrastructure with a short (2030), medium (2040), and long (2050) time horizon are proposed. In addition to the environmental and conservation benefi...
Post a Comment
Read more

Occipital Dermal Sinus Tract Causing Craniospinal Infection: A Review | Chapter 13 | New Visions in Medicine and Medical Science Vol. 4

  Dermal sinus is a rare congenital condition characterized by a pathological tract connecting the skin to deeper tissues of the central nervous system, potentially leading to severe infectious complications. It arises from a failure in the separation of ectodermal layers during early gestation. Diagnosing dermal sinus tract in newborns requires a careful physical examination, focusing on midline dimples in the occipital region associated with cutaneous abnormalities like hairy nevus or hyperpigmentation. The presence of drainage, abnormal hair distribution, or localized swelling may indicate a sinus tract. Regular examination for dimples or sinuses is recommended for infants and children with recurrent meningitis or infections. Early detection is crucial to prevent severe complications like meningitis, with Staphylococcus aureus being a common causative organism. Neuroradiological studies, including computed tomography (CT) scan and magnetic resonance imaging (MRI), with histopath...
Post a Comment
Read more

Alkali Element Modification of Glucose Molecules as a Method to Dissolve Cancer Cells | Chapter 12 | New Visions in Medicine and Medical Science Vol. 4

  The present study highlights about alkali element modification of glucose molecules as a method to dissolve cancer cells. The central regulation of the mechanisms governing cell proliferation has little effect on cancer cells. Cancer cells are entirely independent of the central command and divide and proliferate on their own, making it challenging to activate their response mechanism. Precisely, this is the reason why they are at risk to the health of humans and/or any biological entities. Instead of trying to reconnect the central command of the growth control mechanism to cancer cells that are already out of the range, we present a method of using the cancer cell’s own irresponsive and uncontrolled growth mechanism to their disadvantage and destroy the cancer cells. We found that this is achievable in an atomic/molecular level study of the glucose molecule, which is the primary food source used for growth and energy generation by all cells in the body, including the cancer cel...
Post a Comment
Read more