program includes research on ecology of the vectors of 

 certain zoonoses, especially in relation to their 

 dispersal by man's activities. Biological control; 

 mosquito, bird, and mammal bionomics; and ecology of 

 parasites are studied. 



1971 1972 1973 



$1.00 $1.00 $1.00 



Department of State.— Research is conducted in 

 several developing countries for the control of rats, 

 bats, and noxious birds. Studies include population 

 dynamics, control systems in relation to environmental 

 factors, and developing and testing alternative control 

 methods. Laboratory and field research is conducted on 

 mass rearing and releasing of sterile male tsetse flies to 

 determine the feasibility of control and eradication. 

 Research is designed to find simple, effective, and 

 nonpolluting methods of controlling weeds and 

 nuisance vegetation in developing countries, especially 

 in tropical regions. 



1971 1972 1973 



$2.37 $2.98 $2.98 



Atomic Energy Commission.— In pest control 

 research, irradiation or chemicals are used to produce 

 sterile organisms or organisms carrying lethal re- 

 productive factors. Studies of the genetic mechanisms 

 which sustain lethal factors for several generations 

 and of the mechanisms by which natural pest 

 populations may be controlled are being conducted in 

 Puerto Rico, and Latin America on such pests as the 

 South American fruit fly, the Mediterranean fruit fly, 

 and the sugar cane borer. 



1971 1972 1973 



$0.22 $0.23 $0.16 



Department of the Interior.— The Bureau of Sport 

 Fisheries and Wildlife is charged with the 

 responsibility of managing waterfowl and other 

 migratory birds, game fishes, endangered species, and 

 wildlife populations in general. The purpose of the 

 research is to gain information for the protection, 

 management, and possible enhancement of these 

 animal resources. 



1971 1972 1973 



$1.91 $1.97 $2.04 



61 



