Contral of Arthropods ::
1.Environmental Control ::
The most effective and permanent method of arthropod control is to eliminate the places of their breeding If Dirty water collection refuge and excreta collection are removed mosquitoes and flies can be controlled The basic principle is that every house and its surroundings should be kept clean and everybody should have good personal hygiene
2.Chemical Control ::
Insecticides are available now a days for spraying in houses and cattle sheds Commonest is DDT in the concentration of 1-2 gms per square meter area alternately malathion lindane dimethoate fenthion etc belonging to organochlreorine organophosphorous and carboate group of compounds can also be used Benzyl benzoate is used for the treatment of scabies Larvae of mosquito can be killed by paris green in a concentration of 2% applied to the water surface or mineral oil like kerosine spread over the water surface can prevent the supply of air to the larvae and they are killed However resistance has started developing against these insecticides and they themselves pose a problem of pollution Therefore highly persistent compounds like DDT are replaced by biodegradable and less toxic compounds such as methoxychlor dursban etc
3.Biological Control ::
Some of the recent techniques are also used with varying success Some aquatic animals like Gambusia Lebister fishes and Coelomomyces (fungus) feed on mosquito larvae so if they are grown in water it causes reduction in mosquito larvae
4.Genetic Control ::
Some of the genetic control techniques are also tried as cytoplasmic incompatibility sterile male technique and chromosomal translocation with promising results
5.Newer Methods ::
Insect growth regulators chemosterilants and sex attraction are still newer areas of research in arthropod control
Screening of buildings offices and hospitals by fine gauge doors can keep the winged insects away Mosquito repellants of a variety are also available is in the market diethyl toluamide is the commonest No single approach likely to provide a solution thus adopt an integrated approach
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