Malathion

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Related to Malathion: permethrin, diazinon

Malathion

(măl'əthī`ŏn): see insecticideinsecticides,
chemical, biological, or other agents used to destroy insect pests; the term commonly refers to chemical agents only. Chemical Insecticides

The modern history of chemical insecticides in the United States dates from 1867, when Paris green proved
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malathion

[‚mal·ə′thī‚än]

(organic chemistry)

C₁₀H₁₉O₆PS₂ A yellow liquid, slightly soluble in water; malathion is the generic name for S-1,2-bis(ethoxycarbonyl)ethyl O, O-dimethylphosphorodithioate; used as an insecticide.

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En la Tabla I se aprecia como efecto agudo (dia 1) de la administracion de malathion un aumento estadisticamente significativo en las celulas espermatogoniales del tipo B y en paquiteno, efecto que igualmente se observa en espermatidas redondas y alargadas por tubulos.

Effect of malathion insecticide on testicular germinal epithelium of CF1 mice/Efecto del insecticida malathion sobre el epitelio germinativo de testiculo de raton CF1/Efeito de inseticida malation sobre o epitelio germinativo de testiculo de rato CF1

It was not possible to calculate this rate for the aphids exposed to malathion because all the individuals died within 24 hours.

Lethal and sublethal effects of neem on Aphis gossypii and Cycloneda sanguinea in watermelon/ Efeito letal e subletal do nim em Aphis gossypii e Cycloneda sanguinea na cultura da melancia

Malathion, an organophosphorus pesticide for a large variety of pests, has been widely used in agriculture [1].

Removal of Malathion from Various Waters by Advanced Oxidation Processes

To malathion, it was resistant in 14 districts, verification required category in 10 districts and susceptible in eight districts.

A note on the insecticide susceptibility status of principal malaria vector Anopheles culicifacies in four states of India

For linearity study, bean samples were spiked with standard solutions of the analytes: diazinon (0.24-8.56 [micro]g [g.sup.-1]), ethion (0.86-13.67 [micro]g [g.sup.-1]), fenitrothion (0.56 [micro]g [g.sup.-1], internal standard), malathion (0.52-18.87 pg [g.sup.-1]), methyl parathion (0.23-8.14 [micro]g [g.sup.-1]) and methyl pirimiphos (0.28-10.25 [micro]g [g.sup.-1]).

Simultaneous determination of organophosphorous insecticides in bean samples by gas chromatography--flame photometric detection/Determinacao simultanea de pesticidas organofosforados em feijao por cromatografia gasosa com deteccao fotometrica de chama

Malathion and its cousins, which have been around for almost 60 years, are very hazardous to humans as well as insects.

Old practices and new chemicals kill bees

trichlorfon (98%) Jiangsu Anpon China malathion (95%) lambda-cyhalothrin (98%) Jiangsu Huangma Agrochemicals China bifenthrin (95%) methomyl (93%) Agro-Care Chemical China and spinosad (95%) Shenzhen Crop Star Chemical China were used in different concentration prepared in acetone (98%) Riedel -de HaAn Germany for present study.

ASSESSMENT OF INSECTICIDES RESISTANCE IN FIELD POPULATION OF BACTROCERA ZONATA (SAUNDERS) (DIPTERA: TEPHRITIDAE)

Malathion is used for agricultural purposes to kill and control insects on crops and in gardens.

Food Laced with Pesticide Sickens More than 350 in Japan

For the measurement of rate constants of inhibition ([k.sub.i]), esterases enzyme activity was inhibited with 2 mM malathion, parathion, or trichlorfon concentrations or 4 mM methomyl concentration resulting in an inhibition of 83-99% of control activity.

A method for fast assessment of OP/CB exposure in the Japanese quail (Coturnix coturnix japonica) using combined esterases enzyme activity as biomarkers

In a study on effects imparted to immune system function, decreases in hemocyte counts were recorded in cockroaches that were exposed to malathion (Saxena & Saxena 1985) and crickets that were treated with parathion (Patton 1961).

Pesticide and predation exposure effects on pond snail immune system function and reproductive output

rubrocinctus the concentration ranges of the second assay varied between 0.0001 and 1 [micro]g per mL for spinosad, and between 4.10 to 1,000 [micro]g per mL for malathion and [alpha]-cypermethrin.

Toxicity of different insecticides against two thrips (Thysanoptera: Thripidae) pests of concern in Central America

We used a bacterial consortium composed of Pseudomonas sp and Enterobacter sp isolated samples of cultivation plots in Los Mochis-Sinaloa (Mexico), the isolates showed metabolic activity and resistance against carbofuran, malathion and 2,4-D (9).