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Journal articles on the topic 'LC90'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Hossen, Md Shohag, Shariful Islam, Md Ismail, et al. "Larvicidal activities of 215 medicinal plants extracts against Aedes Aegypti from Bangladesh." Bangladesh Journal of Botany 54, no. 1 (2025): 54–60. https://doi.org/10.3329/bjb.v54i1.80737.

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This study examined the effects of fresh crude extract from 215 plants on the mortality rate of third-instar larvae of Aedes aegypti after a 24-hour exposure. Twenty five plants demonstrated a high mortality rate (up to 80%) at five different concentrations. The LC50, LC90, and LC95 values of the tested plants showed that 15 plants were with 100% larvicidal potential. Stemona tuberosa showed the highest efficacy against Aedes larvae having LC50 = 3.78, LC90 = 7.51, and LC95 = 7.97, while Jatropha gossypifolia showed the lowest efficacy i.e., LC50 = 6.58, LC90 =11.23, and LC95 = 11.31. The extr

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2

Singh, Gavendra, and Soam Prakash. "Studies on Fungal Cultural Filtrates against AdultCulex quinquefasciatus(Diptera: Culicidae) a Vector of Filariasis." Journal of Parasitology Research 2011 (2011): 1–5. http://dx.doi.org/10.1155/2011/147373.

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Entomopathogenic fungi have significant potential to control mosquito population. The culture filtrates ofFusarium oxysporum, Lagenidium giganteum, Trichophyton ajelloi,andCulicinomyces clavisporuswere evaluated against adults ofCx. quinquefasciatus. The culture filtrates were obtained by filtering the broth through Whatman-1 filter paper. These culture filtrates ofC. clavisporushave been found significantly pathogenic with LC50-2.5, LC90-7.24, and LC99-8.7 ML, respectively, after exposure of 24 h. However, the culture filtrates when were combined, in ratios 1 : 1 : 1 ofFusarium oxysporum, Lag

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3

Sharower, MG, and MA Latif. "Larvicidal Impact of Some Local Medicinal Plant Extracts Against Aedes Aegypti (L.)." Journal of the Asiatic Society of Bangladesh, Science 44, no. 1 (2018): 61–67. http://dx.doi.org/10.3329/jasbs.v44i1.46546.

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The larvicidal potential of different solvent (hexane, chloroform, ethyl acetate, acetone and methanol) crude leaf extracts of five plants (Blepharis maderaspatensis, Elaeagnus indica, Maesa indica, Phyllanthus wightianus and Memecylon edule) were tested against the fourth-instar larvae of Aedes aegypti. All the tested extracts showed moderate to good larvicidal activities. However, the maximum larval mortality was detected in acetone extract of E. indica (LC50 90.89, LC90 217.21 and LC99 441.88 ppm) followed by M. indica acetone extract (LC50 173.21, LC90 289.86 and LC99 441.04 ppm). The resu

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4

Ileke, Kayode David. "Entomocidal properties of Monodora myristica (Dunal, 1831) and Conyza sumatrensis (Retzius, 1742-1821) extracts: Studies on two dipterous insect pests Anopheles gambiae (Giles, 1902) and Culex quinquefasciatus (Say, 1823)." Brazilian Journal of Biological Sciences 5, no. 10 (2018): 347–58. http://dx.doi.org/10.21472/bjbs.051014.

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Anopheles gambiae (Giles, 1902) and Culex quinquefasciatus (Say, 1832) mosquitoes are the main vectors of human malaria and lymphatic filariasis, respectively. This study aims to analyze the larvicidal, pupicidal and adulticidal properties of Monodora myristica (Dunal, 1831) and Conyza sumatrensis (Retzius, 1742-1821) extracts against An. gambiae and Cx. quinquefasciatus. The experiment was conducted in the laboratory at ambient temperature of 28 oC +/- 2 oC and 75% +/- 5% relative humidity. The results showed that M. myristica and C. sumatrensis extracts significantly affect all stages of An.

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Kaushik, Shweta, Neeta Raj Sharma, Shashank Garg, Anu Bansal, and T. G. Thomas. "Larvicidal effects of Calotropis procera leaf extracts against Aedes aegypti (L), vector of dengue fever." ENTOMON 47, no. 4 (2022): 415–20. http://dx.doi.org/10.33307/entomon.v47i4.794.

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Leaf extracts of Calotropis procera were tested against late third instar larvae of Aedes aegypti mosquito. Soxhlet extraction of the dried leaves powder with polar and non-polar solvents (water, ethanol, hexane and acetone) was carried out. Larvicidal effects of plant extracts were observed after 24h of exposure. The control group showed no mortality. Ethanolic extract was found more toxic with LC50 1.923 ppm and LC90 8.83 ppm followed by aqueous extract (LC50 2.607 ppm and LC90 11.903 ppm), acetone extract (LC50 4.1 ppm and LC90 16.471 ppm) and hexane extract (LC50 5.364 ppm and LC90 31.759

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6

Adaikala Raj, G., M. Jayaraman, S. Krishnamoorthy, M. Chandrasekaran, and V. Venkatesalu. "Screening of Different Extracts of Marine Macro Green Algae for Larvicidal Activity against Dengue Fever Mosquito, Aedes aegypti (Diptera: Culiadae)." International Letters of Natural Sciences 62 (March 2017): 44–51. http://dx.doi.org/10.18052/www.scipress.com/ilns.62.44.

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The present study larvicidal activities of hexane, chloroform, ethyl acetate, acetone and methanol extracts of Halimeda macroloba, Decsne, Caulerpa racemosa (Frosk) Weber-Van-Bosses and Ulva lactuca Lin, (Chlorophyceae) against Aedes aegypti. The marine macro green algae extracts were tested against early 4th instar larvae of A. aegypti using WHO protocol and concentrations of 200, 400, 600, 800 and 1000 ppm. The observed mortality was made 24 and 48 h after treatment, data was subjected to probit analysis to determine the lethal concentration (LC50 and LC90) of the treated larvae of the teste

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7

Adaikala Raj, G., M. Jayaraman, S. Krishnamoorthy, M. Chandrasekaran, and V. Venkatesalu. "Screening of Different Extracts of Marine Macro Green Algae for Larvicidal Activity against Dengue Fever Mosquito, <i>Aedes aegypti</i> (Diptera: Culiadae)." International Letters of Natural Sciences 62 (March 10, 2017): 44–51. http://dx.doi.org/10.56431/p-za9vhz.

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The present study larvicidal activities of hexane, chloroform, ethyl acetate, acetone and methanol extracts of Halimeda macroloba, Decsne, Caulerpa racemosa (Frosk) Weber-Van-Bosses and Ulva lactuca Lin, (Chlorophyceae) against Aedes aegypti. The marine macro green algae extracts were tested against early 4th instar larvae of A. aegypti using WHO protocol and concentrations of 200, 400, 600, 800 and 1000 ppm. The observed mortality was made 24 and 48 h after treatment, data was subjected to probit analysis to determine the lethal concentration (LC50 and LC90) of the treated larvae of the teste

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8

Marc Koffi, Kouadio Jean. "Effects of Essential Oils of Eucalyptus citriodora (Myrtaceae) and Lippia multiflora (Verbenaceae) on the Survival of Coconut Palm Bug, Pseudotheraptus devastans in Côte d'Ivoire." International Journal of Agriculture and Biology 33, no. 05 (2025): 330504. https://doi.org/10.17957/ijab/15.2309.

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Pseudotheraptus devastans (Heteroptera: Coreidae) is a coconut pest in Côte d'Ivoire. Various larval stages and adults cause deformation of young nuts, sometimes leading to them falling off. The search for a strategy to protect these nuts involved evaluating the efficacy of essential oils of Eucalyptus citriodora and Lippia multiflora on P. devastans. Present study was carried out at the coconut research station of the Centre Nationale de Recherche Agronomique of Côte d'Ivoire. The tests were carried out by spraying EOs at different concentrations on P. devastans larvae and adults. Lethal conc

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9

D, Ingle H., and Pardeshi A. B. "Biotermiticidal Activity of Jatropha gossypifolia Linn. plant extract against Odontotermes obesus (Isoptera: Termitidae)." International Journal for Research in Applied Science and Engineering Technology 12, no. 5 (2024): 3880–85. http://dx.doi.org/10.22214/ijraset.2024.62452.

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Abstract: Termiticidal potential of methanol and aqueous leaves extract of Jatropha gossypifolia Linn. were studied against Odontotermes obesus. The plant leaves were dried, powdered and extracted with methanol and aqueous solvent in soxhlet apparatus for 24 hrs. The 20 termites were exposed to various concentrations from 9.0 to 14.5 mg/ml) of methanol and of aqueous plant extract of Jatropha gossypifolia and percent mortality were recorded after 24 hrs. The termiticidal activity of leaves extract of Jatropha gossypifolia were (LC10 = 9.8220 mg/ml, LD50 = 10.093, LC90 =12.667 mg/ml) in methano

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10

Saeed, Usman, Nannim Nanvyat, Likita Mamot, et al. "Larvicidal Effects of Ethanol Leaf Extracts of Artemisia annua, Cymbopogon citratus and Mentha piperita Against Anopheles and Culex Mosquito Larvae." Tropical Journal of Natural Product Research 9, no. 4 (2025): 1711. https://doi.org/10.26538/tjnpr/v9i4.47.

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Mosquitoes are one of the deadliest insects in the world as they serve as important vectors of diseases including yellow fever, malaria, West Nile virus fever, lymphatic filariasis, etc., causing millions of deaths globally. The urgent need for novel and effective insecticides that are affordable and target-specific is highlighted by the problem of insecticide resistance and its consequences on non-target organisms. Plants possess many bioactive compounds, making them suitable alternatives as mosquito control agents. This study investigated the larvicidal activity of Artemesia annua, Cymbopogo

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11

Pillai, K. S., K. Kobayashi, A. T. Mathai, and M. Michael. "Use of LC50 in aquatic regulatory toxicology-Disharmony in global harmonization of hazard classification of chemicals." ECOTOXICOLOGY AND ENVIRONMENTAL CONTAMINATION 16, no. 1 (2021): 91–96. http://dx.doi.org/10.5132/eec.2021.01.12.

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In regulatory aquatic toxicology, acute toxicity studies with chemicals are conducted with a species of fish, crustacea, and or alga. The LC50/EC50 obtained from these studies is used for the hazard classification and labeling of the chemicals. The methods like probit or logit analysis and Litchfield and Wilcoxon method are prescribed in the OECD guidelines to determine the LC50. In the present study, LC50s were calculated using probit analysis, Litchfield & Wilcoxon method, and also using the method by Trevan (the inventor of median lethal dose) using three sets of concentration-mortality

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12

Alouani, Abdelouaheb. "Laboratory evaluation of Aster 20SP against Culex pipiens (Diptera: Culicidae) immature stages." Journal of Progressive Research in Biology 2, no. 2 (2016): 88–98. https://doi.org/10.5281/zenodo.3970486.

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The purpose of this research work was to investigate the larvicidal activities of Aster 20SP against Culex pipiens and biological effect of this compound. The larvicidal activities of Aster 20SP were tested against the third and fourth instar larvae of Culex pipiens, the mortality was observed after 24h post the treatment. The data were subjected to probit analysis to determine the lethal concentration (LC50 and LC90). The obtained results show a high mortality with the increase in the concentration, at third stage, larval mortality increased from 18.23 % at 0.7 mg /L to 45.16 % at 3mg /L in d

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13

Widiastuti, Ani, Reza Fredo Simarmata, and Christanti Sumardiyono. "Potensi Ekstrak Lengkuas sebagai Fungisida Nabati untuk Mengendalikan Penyakit Karat Daun Anggur (Phakopsora euvitis)." Jurnal Fitopatologi Indonesia 16, no. 3 (2021): 135–43. http://dx.doi.org/10.14692/jfi.16.3.135-143.

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Penyakit karat daun anggur yang disebabkan oleh Phakopsora euvitis merupakan salah satu penyakit penting tanaman anggur. Pengendalian dengan pestisida nabati untuk penyakit ini penting dikembangkan karena pemanfaatannya dapat menekan penggunaan pestisida kimia sintetik yang selama ini diaplikasikan. Penelitian ini bertujuan untuk mengetahui potensi ekstrak lengkuas sebagai fungisida nabati terhadap perkembangan P. euvitis, dan dibandingkan dengan fungisida mankozeb. Metode meliputi persiapan ekstrak lengkuas dalam metanol yang diuapkan, uji daya racun ekstrak lengkuas dan pestisida secara in v

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14

Arruda, Eduardo José de, Ana Paula Leão Rossi, Karla Rejane de Andrade Porto, et al. "Evaluation of toxic effects with transition metal ions, EDTA, SBTI and acrylic polymers on Aedes aegypti (L., 1762) (Diptera: Culicidae) and Artemia salina (artemidae)." Brazilian Archives of Biology and Technology 53, no. 2 (2010): 335–41. http://dx.doi.org/10.1590/s1516-89132010000200012.

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This work aimed to evaluate the toxicity of some insecticides compounds on Aedes aegypti and Artemia salina larvae. Bioassays were carried out to evaluate the toxic effect after of 24 and 72 h using the compounds or associations. The LC10, LC50 and LC90 values were obtained and utilized for toxicity comparations. For Ae. aegypti, LC50 were 32.65 mg L-1 in 24 h for Na2[EDTA-Cu(II)] and total mortality in 72 h for SAP-Na2[EDTA-Cu(II)].

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15

Hernández-Espíndola, Edson, Laura D. Ortega-Arenas, Esteban Rodríguez-Leyva, J. Refugio Lomeli-Flores, Lauro Soto-Rojas, and Alfredo López-Jiménez. "Toxicity of four commercial insecticides on Dactylopius opuntiae (Hemiptera: Dactylopiidae)." Journal of the Professional Association for Cactus Development 25 (October 19, 2023): 153–66. http://dx.doi.org/10.56890/jpacd.v25i.481.

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Dactylopius opuntiae (Cockerell) (Hemiptera: Dactylopiidae) is a pest of Opuntia ficus-indica (L.) Miller (Caryophyllales: Cactaceae) in many regions around the world, and there are no formal insecticide toxicity assays. This study aimed to evaluate the lethal toxicity of malathion, lambda-cyhalothrin, spirotetramat, and potassium salts on D. opuntiae in laboratory and greenhouse assays. In the laboratory, using a potter tower, lethal concentrations (LC50 and LC90) were determined on adult females. Under greenhouse conditions, on O. ficus-indica infested plants, the LC90 of those three convent

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16

Bello, A. M., E. Karu, S. Abubakar, and R. Atiko. "LARVICIDAL ACTIVITY OF AMARANTHUS HYBRIDUS EXTRACT AND BIO-SYNTHESIZED COPPER NANOPARTICLES AGAINST MOSQUITO VECTORS." Journal of Science and Technology 30, no. 5 (2025): 91–100. https://doi.org/10.20428/jst.v30i5.2829.

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This research covers the synthesis and characterization of Cu nanoparticles using leaf extract of Amaranthus hybridus and the larvicidal evaluation of Amaranthus hybridus and Cu nanoparticles. Nanoparticles are an important area in biotechnology that has been attracting interest recently. The bottom-up method of synthesizing nanoparticles using plant extract (green synthesis) was adopted for this study. In this study, copper nanoparticles were successfully synthesized using the leaf extract of African spinach and characterized using various instruments. The FTIR analysis reveals the presence o

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17

Sioutas, Georgios, Alexandros Tsouknidas, Athanasios I. Gelasakis, et al. "In Vitro Acaricidal Activity of Silver Nanoparticles (AgNPs) against the Poultry Red Mite (Dermanyssus gallinae)." Pharmaceutics 15, no. 2 (2023): 659. http://dx.doi.org/10.3390/pharmaceutics15020659.

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Dermanyssus gallinae (PRM) is the most common blood-sucking ectoparasite in laying hens and is resistant against numerous acaricides. Silver nanoparticles (AgNPs) represent an innovative solution against PRM. The current study aimed to assess the in vitro acaricidal activity of AgNPs against PRM and describe their potential mechanism of action. Nanoparticles were produced using a wet chemistry approach. Mites were collected using AviVet traps from 18 poultry farms in Greece. Contact toxicity bioassays were carried out for 24 h with negative controls, 20, 40, 60, or 80 ppm AgNPs. Analysis of va

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18

Amirmohammadi, Fereshteh, Jalal Sendi, and Arash Zibaee. "Toxicity and Physiological Effect of Essential Oil of Artemisia Annua (Labiatae) on Agriolimax Agrestis L. (Stylommatophora: Limacidae)." Journal of Plant Protection Research 52, no. 2 (2012): 185–89. http://dx.doi.org/10.2478/v10045-012-0028-1.

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Toxicity and Physiological Effect of Essential Oil of Artemisia Annua (Labiatae) on Agriolimax Agrestis L. (Stylommatophora: Limacidae) Essential oil of Artemisia annua L. was investigated to find out its toxicity and physiological aspects on the slug Agriolimax agrestis, in controlled conditions (8±1°C, 75±5 RH and 14:10 LD). The slugs received different concentrations of essential oil treated radish leaves in methanol, while the control received methanol alone. LC10, LC30, LC50 and LC90 values were estimated at 4.67, 5.3, 5.81, 7.25%, respectively. The effect of the essential oil on some imp

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19

Rahman, Khondoker Md Zulfiker, and Mohammad Abdur Razzak. "Larvicidal efficacy of selected medicinal plants against the filarial vector mosquito Culex quinquefasciatus Say (Diptera: Culicidae)." Asian Journal of Medical and Biological Research 8, no. 4 (2022): 187–93. http://dx.doi.org/10.3329/ajmbr.v8i4.62232.

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The present research was conducted to assess the mosquito larvicidal potential of selected medicinal plants using an effective but simple method. Aqueous extracts of roots of three selected medicinal plants viz. Derris scandens, Rubia cordifolia and Saussurea lappa were evaluated for their mosquito larvicidal potential against the 3rd instar larvae of C. quinquefasciatus Say (1823) under laboratory settings. Aqueous extracts of these plants at seven different concentrations (1, 25, 50, 100, 150, 200 and 300 ppm) exhibited considerable mortality of the 3rd instar larvae after 24 and 48 h exposu

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20

Nkechi Catherine Nzekwe, Uzoma Ozurumba Ferdinand Osuala, and Oluchukwu Michael Nwachukwu. "Acaricidal activity of Cola nitida aqueous and ethanolic stem bark extracts against Otobuis megnini (Acari: Argasidae)." World Journal of Advanced Research and Reviews 23, no. 2 (2024): 1162–69. http://dx.doi.org/10.30574/wjarr.2024.23.2.2388.

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The present study was designed to evaluate, Acaricidal activity of Cola nitida aqueous and ethanolic stem bark extracts against Otobuis megnini Stem bark extracts of C. nitida were used for In-vitro adult immersion test of soft ticks. Three graded concentrations of the extracts, 15%, 30%, and 45% were tested at different time intervals and tick mortality was recorded for 48 hours. Dieldrin was synthetic acaricide used while distilled water was used as control. Standard procedures were applied to screen the phytochemical constituents of the tested plant part. The phytochemical screening of C.ni

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21

KAYAHAN, Ali. "Bazı bitkisel yağların şeftali yeşil yaprak biti Myzus persicae (Sulzer, 1776) (Hemiptera: Aphididae)’nin yaşam çizelgesi parameterleri üzerindeki etkileri." Turkish Journal of Entomology 47, no. 4 (2023): 373–86. http://dx.doi.org/10.16970/entoted.1291685.

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In this study, essential oils (EOs) of Citrus limon (L.), Citrus sinensis (L.) (Sapindales: Rutaceae), Allium sativum (L.) (Asparagales: Amaryllidaceae) and Brassica nigra (L.) (Brassicales: Brassicaceae) were evaluated for their insecticidal effects on the green peach aphid Myzus persicae (Sulzer, 1776) (Hemiptera: Aphididae). The lethal and sublethal effects of these EOs on M. persicae were studied under laboratory conditions. This study was conducted at Yozgat Bozok University, Faculty of Agriculture, Department of Plant Protection in 2023. The experiments were evaluated at different concen

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22

Handayani, Sri Wahyuni, Dhian Prastowo, Hasan Boesri, et al. "Uji Efikasi Nanoinsektisida Komposisi Perak Tembakau (Nicotiana tabacum) terhadap Aedes aegypti." Media Penelitian dan Pengembangan Kesehatan 30, no. 1 (2020): 55–64. http://dx.doi.org/10.22435/mpk.v30i1.1925.

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Abstract Vector control that used insecticides need to be substituted, because it has a negative impact for the environment and have been resistance for some areas, so it was necessary to find alternative insecticides. One of the natural insecticides was tobacco (Nicotiana tabacum). The chemical content of tobacco leaves included alkaloids, saponins, and flavonoids. Nicotine was an alkaloid group compound in tobacco, thatwas a nerve poison that reacts quickly and can act as a contact poison in insects, to add the effectiveness it’s necessary change to nano particle with silver. Besides,

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23

Nkechi, Catherine Nzekwe, Ozurumba Ferdinand Osuala Uzoma, and Michael Nwachukwu Oluchukwu. "Acaricidal activity of Cola nitida aqueous and ethanolic stem bark extracts against Otobuis megnini (Acari: Argasidae)." World Journal of Advanced Research and Reviews 23, no. 2 (2024): 1162–69. https://doi.org/10.5281/zenodo.14851060.

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The present study was designed to evaluate, Acaricidal activity of <em>Cola nitida</em> aqueous and ethanolic stem bark extracts against <em>Otobuis megnini </em>Stem bark extracts of <em>C. nitida</em> were used for In-vitro adult immersion test of soft ticks. Three graded concentrations of the extracts, 15%, 30%, and 45% were tested at different time intervals and tick mortality was recorded for 48 hours. Dieldrin was synthetic acaricide used while distilled water was used as control. Standard procedures were applied to screen the phytochemical constituents of t

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24

Mahmoud, M. F., M. A. M. Osman, M. Bahgat, and G. A. El Kady. "EFFICIENCY OF SPINETORAM AS A BIOPESTICIDE TO ONION THRIPS (THRIPS TABACI LINDEMAN) AND GREEN PEACH APHID (MYZUS PERSICAE SULZER) UNDER LABORATORY AND FIELD CONDITIONS." Journal of Biopesticides 02, no. 02 (2009): 223–27. http://dx.doi.org/10.57182/jbiopestic.2.2.223-227.

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ABSTRACT Spinetoram toxicity was evaluated under laboratory conditions against primary stages and adult of onion thrips, Thrips tabaci Lindeman and green peach aphid, Myzus persicae Sulzer. Seventy two hours after treatment, lethal concentrations LC10, LC20,LC50 and LC90 for onion thrips adults were 3.171, 5.439, 15.370 and 74.490 µg/ml, respectively, while they were 18.043, 26.782, 57.304 and 181.991 µg/ml for larvae. Under the same conditions, they were 2.993, 4.882, 12.520 and 52.368 µg/ml for peach aphid adults and 5.431, 8.371, 19.264 and 68.335 µg/ml for nymphs, respectively. Thus, the a

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Hirose, Norikazu, Yoshinori Kagaya, and Masaaki Tsuruike. "The task dependent differences in electromyography activity of hamstring muscles during leg curls and hip extensions." PLOS ONE 16, no. 2 (2021): e0245838. http://dx.doi.org/10.1371/journal.pone.0245838.

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This study aimed to investigate the influence of the task type on the relative electromyography (EMG) activity of biceps femoris long head (BFlh) to semitendinosus (ST) muscles, and of proximal to distal regions during isometric leg-curl (LC) and hip-extension (HE). Twenty male volunteers performed isometric LC with the knee flexed to 30° (LC30) and 90° (LC90), as well as isometric HE with the knee extended (HE0) and flexed to 90° (HE90), at 40% and 100% maximal voluntary contraction (MVIC). Hip position was neutral in all conditions. EMG activity was recorded from the proximal and distal regi

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SILVA, TACIANA LOPES DA, CARLOS ROMERO FERREIRA DE OLIVEIRA, CLÁUDIA HELENA CYSNEIROS MATOS, CÉSAR AUGUSTE BADJI, and RENILSON PESSOA MORATO. "LEAF ESSENTIAL OIL FROM Croton pulegiodorus Baill SHOWS INSECTICIDAL ACTIVITY AGAINST Sitophilus zeamais Motschulsky." Revista Caatinga 32, no. 2 (2019): 354–63. http://dx.doi.org/10.1590/1983-21252019v32n208rc.

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ABSTRACT The present study aimed to assess the effects of the essential oil of Croton pulegiodorus Baill on eight populations of Sitophilus zeamais Motschulsky with different patterns of susceptibility to synthetic insecticides. Populations of S. zeamais were obtained from Sete Lagoas-MG, Jacarezinho-PR, Bom Conselho-PE, Garanhuns-PE, Jupi-PE, Lajedo-PE, São João-PE and Serra Talhada-PE. To estimate the lethal concentrations (LC50 and LC90) of oil for each population, fumigation tests were performed. The susceptibility of S. zeamais to the essential oil varied among populations. Garanhuns and

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Lia, Faridah, Salsabila Sofia, and Fauziah Nisa. "Comparation of Local Commercial Bacillus thuringiensis Against Aedes aegypti Larvae." Journal of Health and Medical Sciences 1, no. 1 (2018): 21–26. https://doi.org/10.31014/aior.1994.01.01.4.

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DHF as vector-borne disease become a problem in the world. The most effective way for suppressing the incidence is killing the vector, Aedes aegypti. One of the ways is using a natural insecticide, local Bacillus thuringiensis (Bt). The study aimed to determine the efficacy of local Bt against Aedes aegypti larvae. The study was conducted by using an experimental design with 1.250 3rd and 4th instar larvae Aedes aegypti as a sample. The study consist of 19 groups, 6 groups of local Bt from Curugdago, 6 groups of local Bt from Setiabudi, 6 groups of Bactivec® (commersial Bt), and a group wi

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Ismail Mosleh, Yahia Youssef. "ASSESSMENT OF TWO NATURAL TOXIN MICROCYSTIN AND NODULARIN FOR THE CONTROL OF ANOPHELES MULTICOLOR (DIPTERA: ANOPHELIDAE)." Journal of Biopesticides 04, no. 01 (2011): 61–64. http://dx.doi.org/10.57182/jbiopestic.4.1.61-64.

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ABSTRACT Laboratory experiments were conducted to determine the efficacy of two cyanobacterial toxins (microcystin and nodularin) against the different larval instars, pupal and adult stages of Anopheles multicolor. Experiments were carried out in plastic cups, and the two toxins were tested at four concentrations, where the LC10, LC25, LC50 and LC90 for the first instar larvae under laboratory conditions were 2.95, 3.80, 4.95 and 7.45 µg /ml and 4.37, 6.40, 8.85 and 14.39 µg/ml for microsystin and nodularin respectively. While the LC50 for the first, second, third and fourth larval instars we

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Sharma, Akshu, Manisha Dikshit, AC Pandey, Raj Kumar Singh, and Praful Dikshit. "Larvicidal activity of essential oils of Haridra and Tulsi against Aedes aegypti and Anopheles larvae." Journal of Ayurveda and Integrated Medical Sciences 8, no. 5 (2023): 13–20. http://dx.doi.org/10.21760/jaims.8.5.3.

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An attempt is made in the present study to analyse the larvicidal activity of Haridra and Tulsi against Aedes and Anopheles larvae. Larval bioassays were carried out at different concentrations 50-500ppm. The larval mortality of fourth instar larvae of A. aegypti and Anopheles after 24h of treatment was observed separately in control, 50, 62.5, 100, 150, 250, 300 and 500 ppm concentrations. Based on the Probit analysis, Significant effect (Estimate adh_conc = 3.069, 95% C.I. [2.082, 4.057], z = 6.093, p<.05) of Haridra oil extract concentration for Aedes (adh_conc) on the Probit response or

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Akbar, Rasheed, Brekhna Faheem, Tariq Aziz, et al. "Evaluating the Efficacy of Plant Extracts in Managing the Bruchid Beetle, Callosobruchus maculatus (Coleoptera: Bruchidae)." Insects 15, no. 9 (2024): 691. http://dx.doi.org/10.3390/insects15090691.

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An estimated 2000 plant species have been employed for pest control worldwide. The use of these botanical derivatives is thought to be one of the most cost-effective and sustainable options for pest management in stored grain. The present study was designed to assess the efficacy of five plant extracts viz; Nicotiana tabacum L., Nicotiana rustica L., Azadirachta indica A. Juss., Thuja orientalis L., and Melia azedarach L. against Callosobruchus maculatus L. Plant species extracts were applied at six different concentrations, i.e., 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0% in four replications. The phy

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K., Prabakaran. "PHYTOCHEMICAL PROFILE AND LARVICIDAL ACTIVITY OF PHYLLANTHUS NIRURI LEAVES EXTRACT AGAINST MOSQUITO LARVAE." International Journal of Zoology and Applied Biosciences 3, no. 2 (2018): 168–73. https://doi.org/10.5281/zenodo.1314026.

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Phytochemical analysis and mosquito larvicidal effect of leaf extracts of Phyllanthus niruri was studied against malaria, filaria and dengue vectors of Anopheles stephensi, Culex quinquefasciatus and Aedes aegypti. The phytochemical analysis was assessed by phytochemical screening tests. The larvicidal activity of Phyllanthus niruri leaves extract was tested against mosquito larvae following the WHO protocol. The mortality was observed at 24h after treatment and the data were subjected to probit analysis to determine the lethal concentration (LC50 and LC90) to kill 50 and 90 percent of the tre

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Arango-De la Pava, Luis David, Manasés González-Cortázar, Alejandro Zamilpa, et al. "Bio-guided isolation of a new sesquiterpene from Artemisia cina with anthelmintic activity against Haemonchus contortus L3 infective larvae." PLOS ONE 19, no. 6 (2024): e0305155. http://dx.doi.org/10.1371/journal.pone.0305155.

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Haemonchus contortus is a blood-feeding gastrointestinal parasite that impacts grazing sheep, causing economic losses in animal production. Due to its anthelmintic resistance, alternative antiparasitic treatments like plant-based anthelmintics are necessary to explore. Artemisia cina (Asteraceae) is a plant whose n-hexane extract and ethyl acetate extract exhibit anthelmintic activity against H. contortus, the n-hexane more active. To discover additional bioactive metabolites, a chemical analysis was performed on ethyl acetate extract, which presented an LC90 of 3.30 mg/mL and allowed the isol

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El Serite, Farg S., Khaled A. Abdelshafeek, and Hatel El-Kamali. "Toxicity Effects of N. oleander and E. terracina on M. tuberculata and B. alexandrina Snails." مجلة علوم البحار والتقنيات البيئية 3, no. 1 (2017): 18–27. http://dx.doi.org/10.59743/jmset.v3i1.98.

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The molluscicidal activity of different extracts of two species belonging to many families (Nerium oleader and Euphorbia terracina) was evaluated against two types of snails (Melonides tuberculata and Biomphalaria alexandrina) in the agricultural area of Taourghaa region, Libya. The results clearly showed that (The Lc50 – Lc90 for two snails and two plants of ethanol extract between (1.26 and 2143.2 ppm) interference to ethanol extract, also the Lc50and Lc90 for two snails and two plants of acetone extract between (100 and 924.6) ppm.

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Vinayaga Moorthi, P., C. Balasubramanian, Pasco B. Avery, A. Najitha Banu, and T. Kubendran. "EFFICACY OF FUNGAL ENTOMOPATHOGENS AGAINST RED COTTON STAINER, DYSDERCUS CINGULATUS FABRICIUS (HEMIPTERA: PYRRHOCORIDAE)." Journal of Biopesticides 05, no. 02 (2011): 140–43. http://dx.doi.org/10.57182/jbiopestic.5.2.140-143.

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ABSTRACT The efficacy of entomopathogenic fungi [Beavueria bassiana (Bb08, Bb10) and Isaria fumosorosea (Ifr)] isolated from different regions of Southern Tamil Nadu, India was assessed against red cotton stainer, Dysdercus cingulatus. All the tested isolates showed 100% mortality. The B. bassiana isolates such as Bb08, Bb10 and an I. fumosorosea isolates exemplified the significant mortality among the isolates tested. LC50, LC90 and correlation coefficient were calculated for mortality. Bb08, Bb10 and Ifr isolates unveiled the lowest LC50 (5.9 x 105 , 6.6 x 105 and 2.6 x 105) and LC90 (1 x 10

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Salih Mahdi Ali. "Labaratory Study For The Effect of Neem Oil (Azadirachta indica) Against Mosquito Larvae of (Culiseta longiareolata) in Wasit Governorate/Iraq." Journal of Wasit for Science and Medicine 11, no. 2 (2023): 41–53. http://dx.doi.org/10.31185/jwsm.462.

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The study was undertaken to investigate the effect of neem oil that extracted from Azadirachta indica tree against the larvae of Culiseta longiareolata (Macquarrt) mosquito in all larval instars.The larvae were exposed to different concentrations of neem oil (0.001%,0.01%,0.1%,0.5% and 1%) for 24h and 48h under laboratory conditions.Neem oil was more toxic against 1st.larval instar and reached 90% mortality at concentration of 1% for 48h while the responds of 2nd.,3rd. and 4th. Larval instars were(86.66%,46.66% and 43.33%), respectively. The statistical results of LC50% value have been shown o

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Ramkumar, Govindaraju, Muthugoundar Subramanian Shivakumar, Mohammed Ali Alshehri, Chellasamy Panneerselvam, and Samy Sayed. "Larvicidal potential of Cipadessa baccifera leaf extract-synthesized zinc nanoparticles against three major mosquito vectors." Green Processing and Synthesis 11, no. 1 (2022): 757–65. http://dx.doi.org/10.1515/gps-2022-0071.

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Abstract Mosquitoes are important vectors, which transmit many communicable diseases throughout the world. Synthetic insecticides, such as organophosphate and pyrethroids, are commonly used for their control in the vector control program. Insecticidal compounds from natural sources, notably from plants and synthesized nanoparticles (NPs) are promising tools for managing such vectors. Hence, the study aimed to analyze the insecticidal potentiality of leaf extract of Cipadessa baccifera and synthesized ZnNPs against three major mosquito vectors. The results recorded from UV-Vis spectroscopy show

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Karthi, Sengodan, Karthic Uthirarajan, Vinothkumar Manohar, et al. "Larvicidal Enzyme Inhibition and Repellent Activity of Red Mangrove Rhizophora mucronata (Lam.) Leaf Extracts and Their Biomolecules against Three Medically Challenging Arthropod Vectors." Molecules 25, no. 17 (2020): 3844. http://dx.doi.org/10.3390/molecules25173844.

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The larvicidal potential of crude leaf extracts of Rhizophora mucronata, the red mangrove, using diverse solvent extracts of the plant against the early fourth instar larvae of Anopheles stephensi, Culex quinquefasciatus and Aedes aegypti mosquito vectors was analyzed. The acetone extract of R. mucronata showed the greatest efficacy: for Cx. quinquefasciatus (LC50 = 0.13 mg/mL; LC90 = 2.84 mg/mL), An. stephensi (LC50 = 0.34 mg/mL; LC90 = 6.03 mg/mL), and Ae. aegypti (LC50 = 0.11 mg/mL; LC90 = 1.35 mg/mL). The acetone extract was further fractionated into four fractions and tested for its larvi

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NAINE, S. JEMIMAH, and C. SUBATHRA DEVI. "Larvicidal and Repellent Properties of Streptomyces sp. VITJS4 Crude Extract against Anopheles stephensi, Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae)." Polish Journal of Microbiology 63, no. 3 (2014): 341–48. http://dx.doi.org/10.33073/pjm-2014-045.

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The aim of the present study was to assess the larvicidal and repellent properties of marine Streptomyces sp. VITJS4 crude extracts. The marine soil samples were collected from the Puducherry coast, Tamil Nadu, India. The isolate Streptomyces sp. VITJS4 was taxonomically characterized and identified. The ethyl acetate crude extract tested for larvicidal property showed 100% mortality for all the 3 species after 24 h exposure against the early fourth instar larvae of malarial vector--Anopheles stephensi at 50% and 90% lethal concentration (LC50 = 132.86, LC90 396.14 ppm); dengue vector--Aedes a

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Duniya, Sheneni Victor, Bala Christiana Joseph, and Momoh Isaac Sokoato. "Insecticidal and mosquito repellency property of essential oil from hyptis suaveolens leaves." Open Access Journal of Science 5, no. 1 (2022): 77–83. http://dx.doi.org/10.15406/oajs.2022.05.00179.

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Essential oil was extracted from the leaves of Hyptis suaveolens by hydro-distillation by placing 1kg of the washed fresh leaves in round bottom flasks set up with 1liter distilled water. The Mosquitocidal activity, mosquito larvae (larvicidal) and mosquito repellency effect were carried-out using standard modified methods. Percentage yield of the essential oils was gotten as 0.05%. The essential oil showed very strong larvicidal properties against mosquito larvae. There was low mortality rate at lower dose, at a concentration of 6.25ppm the mortality rate was 4% over a period of 6 hours, same

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Kovaříková, Kateřina, and Roman Pavela. "United Forces of Botanical Oils: Efficacy of Neem and Karanja Oil against Colorado Potato Beetle under Laboratory Conditions." Plants 8, no. 12 (2019): 608. http://dx.doi.org/10.3390/plants8120608.

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Neem and karanja oil are the most promising botanical insecticides in crop protection nowadays. Given that information about the insecticidal abilities of these oils is lacking, the aim was to explore the effects of neem and karanja oil binary mixtures. The insecticidal activity of NeemAzal T/S (Trifolio-M GmbH, Lahnau, Germany) (neem oil), Rock Effect (Agro CS a.s., Česká Skalice, Czech Republic) (karanja oil), and their binary mixes (at 1:1, 1:2, and 2:1 volume ratios) against the larvae of the Colorado potato beetle (CPB; Leptinotarsa decemlineata) was studied. In our bioassays, a synergist

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Abdulwahab, Yousef, Ahyar Ahmad, Isra Wahid, and Paulina Taba. "Coffee arabica-derived copper nanoparticles: A potent larvicidal agent against Aedes aegypti mosquitoes." Journal of Advanced Biotechnology and Experimental Therapeutics 7, no. 2 (2024): 314. http://dx.doi.org/10.5455/jabet.2024.d26.

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Mosquito-borne diseases, such as those transmitted by Aedes aegypti mosquitoes, are a major public health concern. This study examined the larvicidal activity of Coffee arabica-mediated copper nanoparticles (CuNPs) against Aedes aegypti mosquito larvae. CuNPs were synthesized from Coffee arabica extract and characterized using advanced techniques such as UV spectroscopy, FTIR, and X-ray diffraction. The extract contained bioactive compounds with antioxidant properties. Green coffee had higher total phenolic content (TPC) and total flavonoid capacity (TFC) than roasted coffee. Green coffee extr

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Everton, Gustavo Oliveira, Paulo Sérgio Santos Júnior, Everton Holanda Sales, et al. "Essential oils of the leaves of Syzygium cumini (L.) Skeels and fruit peels of Hymenaea courbaril (L.) var. courbaril as molluscides against Biomphalaria glabrata." Research, Society and Development 9, no. 10 (2020): e1239108215. http://dx.doi.org/10.33448/rsd-v9i10.8215.

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This study evaluated the molluscicidal activity of essential oils (EOs) of Syzygium cumini L. and Hymenaea courbaril L. Hydrodistillation was used to extract the EOs. The chemical characterization was performed by Gas Chromatography coupled to mass spectrometry. The bioassay of Artemia salina Leach was used for the toxicity test. The molluscicidal assay tested concentrations of 10-80 mg L-1 of the EOs against Biomphalaria glabrata. The major constituent of The EO of S. cumini was isokaryophyllene and H. courbaril the Germacreno-D. The toxicity assay classified The EOs as nontoxic with LC50 412

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Kobenan, Koffi Christophe, Vama Etienne Tia, Germain Elisabeth Cynthia Ochou, et al. "Comparaison du potentiel insecticide des huiles essentielles de Ocimum gratissimum L. et de Ocimum canum Sims sur Pectinophora gossypiella Saunders (Lepidoptera : Gelechiidae), insecte ravageur du cotonnier en Côte d’Ivoire." European Scientific Journal, ESJ 14, no. 21 (2018): 286. http://dx.doi.org/10.19044/esj.2018.v14n21p286.

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The abusive use of synthetic pesticides in the phytosanitary protection of cotton in Côte d'Ivoire threatens the viability of the production system. The search for alternative control methods is therefore necessary. Phytosanitary strategies involving plant-based biopesticides have been explored. The insecticidal activity of essential oils of plant species of the genus Ocimum has been the subject of numerous investigations. The objective of this study is to compare the insecticidal potential of two species of the same genus Ocimum gratissimum and O. canum on a major cotton pest, the pink worm P

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Ocampo-Gutiérrez, Ana Yuridia, Víctor Manuel Hernández-Velázquez, Alejandro Zamilpa, et al. "Oxalis tetraphylla (Class: Magnoliopsidae) Possess Flavonoid Phytoconstituents with Nematocidal Activity against Haemonchus contortus." Pathogens 11, no. 9 (2022): 1024. http://dx.doi.org/10.3390/pathogens11091024.

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The nematocidal activity of an Oxalis tetraphylla hydroalcoholic extract against the nematode Haemonchus contortus (Hc) was assessed in vitro and the major compounds associated with nematocidal activity were identified. One hydroalcoholic extract was obtained from O. tetraphylla stems and leaves (Ot HE-SLE). The in vitro lethal concentrations (LC50 and LC90) against both eggs and exsheathed Hc infective larvae (L3) were assessed. Ot HE-SLE showed a potent ovicidal activity (LC50 = 0.213 mg/mL; LC90 = 0.71 mg/mL) and larvicidal effect (LC50 = 28.01 mg/mL; LC90 = 69.3 mg/mL). Later on, the extra

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Raghavendra, H. L., T. R. Prashith Kekuda, Chaithra R. Shetty, and Manjula Shantaram. "Insecticidal efficacy of Rubus steudneri and Rubus apetalus against Aedes (Diptera: Culicidae) and Culex (Diptera: Culicidae) mosquitoes." Biomedicine 41, no. 2 (2021): 427–30. http://dx.doi.org/10.51248/.v41i2.1052.

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Introduction and Aim: Rubus steudneri Schweinf. and Rubus apetalus Poir. belonging to the family Rosaceae is one of the ethnomedicinal plants used widely in Ethiopia as food, for construction and as medicine. To the best of our knowledge, insecticidal activity of R. steudneri and R. apetalus has not been investigated so far. In this study, we report insecticidal efficacy of R. steudneri and R. apetalus in terms of larvicidal effect against II and III instar larvae of Aedes and Culex mosquitoes. Materials and Methods: The shade-dried and powdered leaves were extracted using methanol by ma

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Mahardika, Mesia Margi, Sri Agus Sudjarwo, and Setiawan Koesdarto. "Anthelmintic Activity of Ocimum sanctum Linn. Leaves Ethanol Extract Against Fasciola gigantica in vitro." KnE Life Sciences 3, no. 6 (2017): 266. http://dx.doi.org/10.18502/kls.v3i6.1135.

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The aims of this research are to know the concentration, exposure time and interaction between concentration and exposure time of Ocimum sanctum Linn. leaves ethanol extract which cause the most mortality toward Fasciola gigantica. Also to know its value of LC50 and LC90. The research was completely randomized design. There were five treatments. Each treatment was done in four replications and used 10 Fasciola gigantica. The observation and recording of dead Fasciola gigantica were done at 0, 2, 4, 6, 8 and 10 hours. Fasciola gigantica were declared dead if there was no movement when disturbed

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Paventi, Gianluca, Laura de Acutis, Antonio De Cristofaro, Marco Pistillo, Giacinto S. Germinara, and Giuseppe Rotundo. "Biological Activity of Humulus lupulus (L.) Essential Oil and Its Main Components against Sitophilus granarius (L.)." Biomolecules 10, no. 8 (2020): 1108. http://dx.doi.org/10.3390/biom10081108.

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Besides its use in the brewing industry, hop cones appear as a powerful source of biologically active compounds, already checked for their putative anticancer, antimicrobial, and other bioactivities. Conversely, hop use in pest control remains to date under-investigated. Therefore, the biological activity of hop essential oil (EO) and its main constituents was investigated here against Sitophilus granarius. Adult contact toxicity was found 24 h after treatment with hop EO (LD50/LD90 13.30/40.23 µg/adult), and its three most abundant components, α-humulene, β-myrcene, and β-caryophyllene (LD50/

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Silva, Francisco Sérgio Neres da, Geraldo Mariano Soares da Silva, Joice Kely Souza Santos, Mateus Ribeiro de Campos, Katiuchia Pereira Takeuchi, and Adriano Cirino Tomaz. "Toxicity of botanical insecticides on the stingless bee Tetragonisca angustula." OBSERVATÓRIO DE LA ECONOMÍA LATINOAMERICANA 22, no. 9 (2024): e6916. http://dx.doi.org/10.55905/oelv22n9-200.

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This study aimed to investigate the toxicity of botanical insecticides on the stingless bee Tetragonisca angustula (Apidae: Meliponini). Bioassays evaluated the effects of essential oils (EO) of Allium sativum (Amaryllidaceae), Eucalyptus citriodora (Myrtaceae), and commercial oil (CO) of Azadirachta indica (Meliaceae), in addition to ethanolic extracts (EE) of Piper nigrum (Piperaceae), and Eugenia caryophyllata (Myrtaceae). It was also assessed the effect of Surfactant addition to essential oils. The probit analysis was used to determine LC50 and LC90. Results showed essential oil of E. citr

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Aribi, Lamia, Mustapha Bounechada, Abdelhalim Khenchouche, Ismahane Nabti, Fethi Bensebaa, and Amel Boudechicha. "PHYTOCHEMICAL COMPOSITION AND LARVICIDAL ACTIVITY OF SACCOCALYX SATUREIOIDES COSS. ET DURIEU ESSENTIAL OIL AGAINST CULEX PIPIENS S.L. AND CULISETA LONGIAREOLATA (DIPTERA: CULICIDAE)." Natural Resources and Sustainable Development 14, no. 1 (2024): 39–50. http://dx.doi.org/10.31924/nrsd.v14i1.148.

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The aim of this study was to test the potential insecticidal properties of Saccocalyx satureioides (Lamiaceae) essential oil against the 4th instar larvae of Culex pipiens s.l. and Culiseta longiareolata, which constitute the most abundant mosquito species in Setif region (Northeast of Algeria). The essential oil was extracted from the plant through hydrodistillation of dried aerial parts in a yield of 2 % and analyzed by gas chromatography-mass spectrometry. The larvicidal effect of the obtained essential oil was thereafter tested according to the World Health Organization standard protocol.

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SANTOS, PATRYCK ÉRMERSON MONTEIRO DOS, ANTONIELSON BEZERRA DA SILVA, CILENE REJANE INÁCIO DE MAGALHÃES LIRA, CLÁUDIA HELENA CYSNEIROS MATOS, and CARLOS ROMERO FERREIRA DE OLIVEIRA. "CONTACT TOXICITY OF ESSENTIAL OIL OF Croton pulegiodorus BAILL ON Sitophilus zeamais MOTSCHULSKY." Revista Caatinga 32, no. 2 (2019): 329–35. http://dx.doi.org/10.1590/1983-21252019v32n205rc.

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ABSTRACT The objective of this work was to evaluate the contact toxicity of essential oil of Croton pulegiodorus Baill on six populations of Sitophilus zeamais Motschulsky. The S. zeamais populations used were from Crixás-GO, Espírito Santo do Pinhal-SP, Juiz de Fora-MG, Picos-PI, Serra Talhada-PE, and Vicentina-MS, Brazil, and present different susceptibility to synthetic insecticides. The essential oil of C. pulegiodorus used was obtained from plants collected in Triunfo-PE, Brazil. The lethal concentrations (LC50 and LC90), toxicity ratio of the essential oil, and the resistance ratio of th

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