scholarly journals Leaf extracts of Melia azedarach Linnaeus (Sapindales: Meliaceae) act as larvicide against Aedes aegypti (Linnaeus, 1762) (Diptera: Culicidae)

2008 ◽  
Vol 41 (6) ◽  
pp. 560-564 ◽  
Author(s):  
Josiane Somariva Prophiro ◽  
Juliana Chedid Nogared Rossi ◽  
Murilo Fernandes Pedroso ◽  
Luiz Alberto Kanis ◽  
Onilda Santos Silva
Keyword(s):  
Aedes Aegypti ◽  
Present Report ◽  
Fourth Instar ◽  
Melia Azedarach ◽  
Leaf Extracts ◽  
Larvicidal Effect ◽  
The Third ◽  
Seeds And Fruits

The objective of this study was to compare the larvicidal effect of hydroethanolic extracts of fresh and dry leaves of Melia azedarach Linnaeus (Sapindales: Meliaceae) on Aedes aegypti (Linnaeus, 1762) (Diptera: Culicidae). All the extracts evaluated induced mortality among the third and fourth instar larvae of Aedes aegypti after 24 and 48 hours of exposure to the products. Although previous studies had demonstrated the action of seeds and fruits of Melia azedarach against the larvae of different Aedes aegypti populations, the present report is the first to show the larvicidal effect of the fresh and dry leaves of this plant.

scholarly journals Priprioca (Cyperus articulatus var. nodosus, Cyperaceae) Hydrolate as Larvicidal against Aedes aegypti

2020 ◽  
pp. 91-98
Author(s):  
Inês Ribeiro Machado ◽  
Keila Rêgo Mendes ◽  
Adriano Rodrigues De Paula ◽  
Michelly Rios Arévalo ◽  
Amanda Sousa Silva ◽  
...  
Keyword(s):  
Essential Oil ◽  
Aedes Aegypti ◽  
Plant Extracts ◽  
Chemical Characterization ◽  
Bioactive Substances ◽  
Commercial Products ◽  
Larvicidal Effect ◽  
The Third ◽  
Hydrolysis Of

Dengue cases have grown significantly in Brazil in recent years. Studies with plant extracts show the insecticidal potential of bioactive substances that become candidates for future commercial products. This work evaluated the larvicidal effect of essential oil, without hydrolysis of Cyperus articulatus var. nodosus against the third and fourth wide stage of Aedes aegypti, which reduces larvae survival by as much as the 3th and 4th instar of Ae. aegypti. A chemical characterization of the hydrogen skeletons was performed by the GC-MS, revealing verbenone (%), trans-sabinol (%) and mirtenol (%) as major compounds. 


scholarly journals Larvicidal Impact of Some Local Medicinal Plant Extracts Against Aedes Aegypti (L.)

2018 ◽  
Vol 44 (1) ◽  
pp. 61-67
Author(s):  
MG Sharower ◽  
MA Latif
Keyword(s):  
Medicinal Plant ◽  
Aedes Aegypti ◽  
Ethyl Acetate ◽  
Plant Extracts ◽  
Larval Mortality ◽  
Fourth Instar ◽  
Acetone Extract ◽  
Leaf Extracts ◽  
Medicinal Plant Extracts ◽  
Larvicidal Activities

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 results revealed that larvicidal properties of the four selected plants and encourages further investigation for the bioactive compounds that might possess good larvicidal properties in pure form. Asiat. Soc. Bangladesh, Sci. 44(1): 61-67, June 2018

Larvicide and oviposition deterrent effects of fruit and leaf extracts from Melia azedarach L. on Aedes aegypti (L.) (Diptera: Culicidae)

2008 ◽  
Vol 99 (8) ◽  
pp. 3066-3070 ◽  
Author(s):  
C. Coria ◽  
W. Almiron ◽  
G. Valladares ◽  
C. Carpinella ◽  
F. Ludueña ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Oviposition Deterrent ◽  
Melia Azedarach ◽  
Leaf Extracts

scholarly journals PRELIMINARY PHYTOCHEMICAL QUALITATIVE AND QUANTITATIVE ANALYSIS OF BRASSICA OLERACEA LEAF EXTRACTS ON FOURTH INSTAR LARVAE OF AEDES AEGYPTI (CULICIDEA: DIPTERA)

2017 ◽  
Vol 4 (3) ◽  
pp. 90-93
Author(s):  
Loganathan R ◽  
Vasugi S.R ◽  
Rajmohan D ◽  
Senthilkumar S ◽  
Karthikeyan A
Keyword(s):  
Aedes Aegypti ◽  
Brassica Oleracea ◽  
Ethanol Extract ◽  
Fourth Instar ◽  
Qualitative And Quantitative Analysis ◽  
Dengue Vector ◽  
Leaf Extracts ◽  
Qualitative And Quantitative ◽  
Ethanol Extracts ◽  
Brassica Oleracea Var.Botrytis

Aedes aegypti, dengue fever mosquito, is primarily associated with the transmission of dengue in tropical and subtropical regions of the world. The present investigations was carried out to assess the larvicidal efficacy of aqueous and ethanol leaf extract of Brassica oleracea var. botrytis L against 4th instar larvae of  Ae.aegypti. The concentration of extracts prepared from the leaf of plant Brassica oleracea var.botrytis L. were screened for their larvicidal activity against early fourth instars of dengue vector. The mortality rate of Ae.aegypti against aqueous and ethanol extracts of B.oleracea as follows 72% and 96%. Ethanol extract exposed to IVth larvae of Ae.aegypti is more efficiency than the aqueous extract. The present investigation suggest the possible use B. oleracea L. as an agent for the control of dengue vector, A. aegypti.

Near-Infrared Combination and Overtone Bands of CH in CHX3, CHX2—CHX2, and CHX2—CX2—CHX2

2005 ◽  
Vol 59 (11) ◽  
pp. 1393-1398 ◽  
Author(s):  
Reikichi Iwamoto ◽  
Akishi Nara ◽  
Toshihiko Matsuda
Keyword(s):  
Excited State ◽  
Near Infrared ◽  
Present Report ◽  
Spectral Characteristics ◽  
The Other ◽  
Coupled Modes ◽  
Third Order ◽  
The Third ◽  
Combination Bands ◽  
Deformation Modes

In the present report we studied spectral characteristics of the near-infrared combination and overtone bands of CH vibrations of a CH sequence. The near-infrared bands of the CH in CHX3 (X, halogen), which were interpreted in terms of the CH stretching and CH deformation fundamentals without any ambiguity, typically showed how the frequency and intensity of a combination or an overtone depend on the vibrational excited state. In the CH–C–CH of CHX2CX2CHX2, the vibrations of one CH are isolated from those of the other CH, and the combination and overtone bands were similarly interpreted as those of the CH, although each of the combination bands was split into two because of non-degeneracy of the CH deformation. In the CH–CH of CHX2CHX2, the CH deformations only have coupled modes. The first combination showed four narrowly separate bands, which were reasonably interpreted on the basis of the CH stretching and the coupled CH deformation modes. We demonstrated that the first combination of coupled modes as well as the combination of up to, at least, the third order of isolated modes have the nature of the characteristic bands.

ENCAPSULATION OF RHABDITOID NEMATODES IN MOSQUITOES

1962 ◽  
Vol 40 (7) ◽  
pp. 1269-1275 ◽  
Author(s):  
Joan F. Bronskill
Keyword(s):  
Aedes Aegypti ◽  
Endemic Species ◽  
Body Cavity ◽  
Fourth Instar ◽  
The Body ◽  
Histological Structure ◽  
Adult Tissue ◽  
Defence Reaction ◽  
Blood Sinus

In third and fourth instar larvae of Aedes aegypti (L.), juveniles of the rhabditoid, DD136, penetrate the blood sinus and cardial epithelium of the proventriculus to enter the body cavity of the host, where they complete their development. By 5 hours, a thick capsule developed about many of the ensheathed immature adults of DD136 within the body cavity of A. aegypti larvae. This rapid defence reaction of the mosquito to DD136, which has both a melanin and a cellular manifestation, occurs both in the exotic mosquito A. aegypti and in the two endemic species tested, Aedes stimulans (Walker) and Aedes trichurus (Dyar). The resistance of A. stimulans to an endemic rhabditoid, possibly of the Diplogasteridae, is also similar. The histological structure of the capsule is not affected during metamorphosis in A. aegypti; however, during histogenesis of adult tissue displacement and (or) distortion of some tissues and organs may be caused by the presence of the capsule within the host's body cavity. The activity of the adult A. aegypti is normal when this distortion or displacement is minor. Though usually encapsulated DD136 are retained within the body cavity of A. aegypti during metamorphosis, sometimes they are partially or completely expelled from the host's body cavity at the time of molting.

In vitro and in vivo activities of Melia azedarach L. aqueous leaf extracts on murine lymphocytes

Phytomedicine ◽  
1998 ◽  
Vol 5 (1) ◽  
pp. 47-53 ◽  
Author(s):  
M.C. Courrèges ◽  
F. Benencia ◽  
F.C. Coulombié ◽  
C.E. Coto
Keyword(s):  
Melia Azedarach ◽  
Leaf Extracts

scholarly journals Familial Microscopic Colitis

2001 ◽  
Vol 15 (5) ◽  
pp. 341-343 ◽  
Author(s):  
Ayman Assad Abdo ◽  
Peter Jeffrey Zetler ◽  
Lawrence S Halparin
Keyword(s):  
Chronic Diarrhea ◽  
Present Report ◽  
Disease Process ◽  
Collagenous Colitis ◽  
Microscopic Colitis ◽  
Familial Occurrence ◽  
Lymphocytic Colitis ◽  
The Third ◽  
Inflammatory Conditions ◽  
Colonic Biopsy

Collagenous and lymphocytic colitis are two inflammatory conditions of the colon that are often collectively referred to as microscopic colitis. The present report describes what is believed to be the third published case of familial microscopic colitis. A 55-year-old woman who suffered from chronic diarrhea was diagnosed with lymphocytic colitis on colonic biopsy. Subsequently, her 36-year-old daughter was diagnosed with collagenous colitis. The familial occurrence of these diseases may support an immunological hypothesis for their etiology. In addition, it supports the assumption that collagenous and lymphocytic colitis are two manifestations of the same disease process rather than two completely separate entities. The familial tendency of this disease may make a case for early colonoscopy and biopsy in relatives of patients diagnosed with microscopic colitis if they present with suggestive symptoms.

scholarly journals Mosquito Larvacidal Activity of Zingiber montanum Rhizome Extract Against Aedes aegypti larvae

2019 ◽  
pp. 33-40
Author(s):  
Dwi Sulistia Ningrum ◽  
Siwi Pramatama Mars Wijayanti ◽  
Kuswanto Kuswanto
Keyword(s):  
Aedes Aegypti ◽  
Negative Impact ◽  
Control Group ◽  
Control Group Design ◽  
Group Design ◽  
Larvicidal Effect ◽  
Natural Insecticide ◽  
Post Test ◽  
Quasi Experimental ◽  
Lc50 And Lc90

Aedes aegypti is the main vector which transmits Dengue virus as causing agent of Dengue Haemmorhagic Fever (DHF). Chemical control of Ae. aegypti have an impact on the environment and humans, also burden a high cost. One of the efforts to reduce the negative impact of synthetic insecticide, which is to find out alternative natural insecticide from plant-based insecticides. The purpose of this research is to determine the killing power of the rhizome bangle extract to Ae. aegypti larvae. This research was a quasi-experimental design with post test only control group design. The concentration of extract rhizome bangle used were 0%; 0.125%; 0.25%; 0.5%; 0.75% and 1%. The mosquito sample used in this study were instar III of Ae. aegypti larvae as many as 600 larvae. Data analysis used univariate and bivariate (probit and Kruskal Wallis test). The results showed that there was an effect of the concentration of extract rhizome bangle against the mortality of Ae. aegypti larvae with p=0,002 (p<0,05). Extract rhizome bangle effectively killed Ae. aegypti larvae with LC50 and LC90 were 0.148 % and 0.338 %, with the most effective concentration is 1%. Based on this research, extract rhizome bangle has a larvicidal effect on Ae. aegypti, so it can be used as an alternative method to minimize the usage of chemical larvicides that easily applied by the community.

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