NEW MEXICO (Cont. ) 



3. The Life History of the Rio Grande Cutthroat Trout, Salmo clarki virginalis Girard. 



Biological studies undertaken include a generalized life-history study: general be- 

 haviour, habitat, reproductive requirements and habits, fecundity, food and 

 feeding habits. 



Northern New Mexico, primarily in the Rio la Junta, Tres Ritos, Taos County; 



began September 1939, continuing. 

 Address correspondence to: William J. Koster, Dept. of Biology, Univ. of N. M. , 



Albuquerque, N. M. 



4. The Fishes of New Mexico. 



This project is conducted as a survey to determine the fish fauna of the State and 



its distribution, and to determine the requirements and habits of the various species. 



Statewide; began September 1938, continuing. 



Address correspondence to: William J. Koster, Dept. of Biciogy, Univ. of N, M. , 

 Albuquerque, N. M. 



5. The Spawning Habits of the Rio Grande Mountain Sucker, Pantosteus plebeius (Baird 



and Birard). 



The objectives of this project are to determine the r -^productive habits and require- 

 ments, and the fecundity of this trout associate and to describe the eggs and 

 larval stages. 



Rio Mimbres in Grant County; and various streams in Sandoval and Valencia 



Counties; began June 1948, planned for 6 years. 

 Address correspondence to: William J. Koster, Dept. of Biology, Univ. of N. M. , 



Albuquerque, N. M. 



6. The Spawning Habits of the Rio Grande Chub, Gila nigrescens (Girard). 



Objectives and description of the project: To determine the reproductive habits and 

 requirements and the fecundity of this trout associate and to describe the eggs 

 and larval stages. 



Northern New Mexico, chiefly in Valencia and Sandoval Counties; began June 1948, 



planned for 6 years. 

 Address correspondence to: William J. Koster, Dept. of Biology, Univ. of N. M. , 



Albuquerque, N. M. 



NEW YORK 

 Conservation Department 



1. Studies in Nutrition and Disease Control on Hatchery Fish. 



In order to improve propagation methods continuous research on specific problems 

 including diets and disease control is carried on. Nutrition work is centered 

 mostly at Cortland and disease control is centered at the Rome hatchery laboratory. 



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