Objective: To determine the contributions of main chemical compositions of extracts of Eucalyptus camaldulensis represented by GC/MS elute peaks to the molluscicidal activities, and explore a shortcut of looking for the effective components from natural products.
Methods: E. camaldulensis leaves were collected consecutively in 12 months at the same place, extracted with dichloromethane, analyzed by GC/MS, and their LC50(s) of molluscicidal activities were tested according to the method recommended by WHO. The correlation of the main components in 12 extracts and their molluscicidal activities were analyzed by the grey relative correlation analysis model with software GTMS 3.0.
Result: All the dichloromethane extracts of eucalyptus leaves showed excellent molluscicidal activities with the highest LC50 of 0.257mg/L and 0.242mg/L for the samples in June and July and the lowest LC50 of 6.802 mg/L and 5.406 mg/L in December and January respectively. The structures of 16 main chemical components were elucidated by GC/MS and NIST Mass Spectral Library, most of which were monoterpenes and sesquiterpenoids. The gray correlation coefficients with activity were all over 0.5, the first five over 0.9 were 4,4, 8-Trimethyltricyclo [6.3.1.0 (1,5) ]dodecane-2,9-diol, (-)-Spathulenol, a structural isomer of (-)-Spathulenol, Eucalyptol and Ledol.
Conclusion: The most main ingredients in the dichloromethane extracts of E. camaldulensis leaves show good correlations with the molluscicidal activity, which suggests that the molluscicidal role is synergistically played by the multiple components together.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Symbiotic bacteria associated with entomopathogenic nematodes showed molluscicidal activity against Biomphalaria glabrata, an intermediate host of Schistosoma mansoni.
Parasit Vectors
December 2024
Department of Microbiology and Parasitology, Faculty of Medical Science, Naresuan University, Phitsanulok, 65000, Thailand.
Background: Biomphalaria glabrata acts as the intermediate host of schistosomes that causes human schistosomiasis. Symbiotic bacteria, Xenorhabdus and Photorhabdus associated with Steinernema and Heterorhabditis, produce secondary metabolites with several biological activities. Controlling B.
View Article and Find Full Text PDFMolluscicidal assessment of certain toxicants: Impact on biochemical alterations and electrophoretic protein patterns in Massylaea vermiculata (O. F. Müller, 1774) snails.
Environ Toxicol Pharmacol
December 2024
Department of Agricultural Zoology and Nematology, Faculty of Agriculture, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt. Electronic address:
Massylaea vermiculata snails are a significant gastropod pest in Egypt, threatening agriculture. Due to increasing concerns about conventional pesticides, it is imperative to find effective alternatives that are less harmful. We assessed the molluscicidal activity of abamectin, methoxyfenozide, and spinosad using the leaf-dipping method in vitro and the effect of LC of these compounds on biochemical aspects and protein electrophoresis.
View Article and Find Full Text PDFAssessment of molluscicidal activity of Syzygium aromaticum essential oil against Eobania vermiculata under laboratory and field conditions.
Toxicon
December 2024
Cell Biology, Histology and Genetics Division, Department of Zoology, Faculty of Science, Beni-Suef University, P.O. Box 62521, Beni-Suef, Egypt. Electronic address:
The present study focused on assessing the impact of clove oil on adult snails, specifically Eobania vermiculata, due to their detrimental effects on plants and crops. Our investigation aimed to explore both the lethal and sub-lethal toxicity of clove oil under laboratory and field conditions, with the goal of elucidating the mechanisms underlying its toxic effects on E. vermiculata.
View Article and Find Full Text PDFMolluscicidal Activity of Extracts and Fractions From , , and Against and Snails.
J Parasitol Res
November 2024
Department of Microbial, Cellular and Molecular Biology, College of Natural and Computational Sciences, Addis Ababa University, PO Box 1176, Addis Ababa, Ethiopia.
: Schistosomiasis continues to be a major public health concern in Ethiopia. Eliminating the intermediate host snails is an effective and cost-efficient strategy for preventing and controlling schistosomiasis transmission. However, chemical molluscicides have limitations due to their toxicity to nontarget aquatic organisms, environmental concerns, and the development of resistance.
View Article and Find Full Text PDF[Molluscicidal effect of spraying different formulations of niclosamide ethanolamine salt with drones against in ditches].
Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi
September 2024
National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), National Health Commission Key Laboratory of Parasite and Vector Biology, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai 200025, China.
Article Synopsis
- The study aimed to test the effectiveness of different formulations of niclosamide ethanolamine salt on controlling snails in ditches using drone spraying.
- Four experimental groups were set up with varying conditions and treatments, where two groups received cleaning and different concentrations of niclosamide were used.
- Results showed that both formulations significantly reduced snail populations, achieving high mortality rates, with no significant differences in effectiveness between the two types of treatments used.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!