Experimental Malaria Infections in Two Races of A. Stephensi *The experiments reported in this paper were done under the auspices and the support of the International Health Division of The Rockefeller Foundation, co-operating with the King Institute of Preventive Medicine, Guindy, Madras. The authors wish to acknowledge gratefully the assistance of Dr. B. Ananthaswamy Rao, B.Sc., M.B., B.S., M.P.H., Superintendent, Bureau of Epidemiology and Communicable Diseases, Mysore State, who collected A. stephensi mysorensis larvæ which were brought by the authors from Bangalore to Madras for use in the experiments.

An Insectary Colony of A. Stephensi Mysorensis *The observations on which this note is based were carried out as a part of the programme of Malaria Investigations, under the auspices and with the support of the International Health Division of the Rockefeller Foundation co-operating with the Health Department of Madras Presidency, the King Institute of Preventive Medicine in Guindy, Madras, and the Pasteur Institute of Southern India in Coonoor.

Effect of Oral and Intramuscular Administration of Ivermectin in Guinea Pigs on Survival of Blood-feeding Anopheles stephensi under Insectary Conditions

Background and purpose: Insecticide resistance in mosquitoes particularly malaia may lead to reemergence of malaria epidemics. This study aimed to investigate the effect of oral and intramuscular administration of ivermectin on guinea pigs exposed to Anopheles stephensi mosquitoes, the main malaria vector. Materials and methods: The effect of ivermectin was studied in oral and intramuscular ad...

Races of A. Stephensi Liston, 1901 *The work here reported was done with the support and under the auspices of the Department of Health, Government of Mysore, and the International Health Division of the Rockefeller Foundation.

possibilities. During a study of village malaria in Mysore State (Sweet, 1937), several anophelines were studied, including A. stephensi, from various parts of the State, but no evidence of races of Indian anophelines based on egg patterns could be found and it was concluded that other methods to distinguish possible differences would have to be used. Such a new approach to the subject was sugg...

A Malario-Economic Survey in Rural South India *This paper is based on observations made as a part of the programme of Malaria Investigations, a project under the auspices and having the support of the International Health Division of the Rockefeller Foundation, co-operating with the Health Department of Madras Presidency and the Pasteur Institute of Southern India, in Coonoor. The authors are grateful to Dr. V. P. Jacob and Mr. T. Ramachandra Rao, of the staff of Malaria Investigations, for their assistance.

This paper reports a malario-economic survey made by a house-to-house canvass in three malarious and two non-malarious villages in south-eastern Madras between March 1939 and March 1940. The survey was undertaken in order to obtain some understanding of economic and social conditions with particular reference to malaria and its control. The malarious villages included were Kasangadu, Tuvarangur...

Determination of Glutathione S-Transferase e2 Region (GSTe2) in DDT Susceptible and Resistant Anopheles stephensi Populations: Significance and Application of Nucleotide and Amino Acid Comparison

Glutathione S-transferases (GSTs) are a major family of detoxification enzymes which possess a wide range of substrate specificities. Interest in insect GSTs has primarily focused on their role in insecticide resistance. In this study, following World Health Organization (WHO) routine susceptibility test, DNA was extracted from specimens of Anopheles stephensi collected from the Kazeroon distri...