NoYe 
(Cornell) 
N. Ce 
Oreg. 
Pa. 
Pa. 
Pa. 
— hon 
Ecological Study of the Regulation of Insect Numbers in 
a Community. (1) Study natural regulation of insect numbers in 
a community; (2) Learn effect of insecticides on this equilibrium 
in community; (3) Use knowledge of biotic communities to improve 
methods of insect control; (4) Utilize population fluctuations of 
pest species. 
Fnt. 102 
Studies on Heterozygosity, Heterosis, and Homeostasis in 
Drosophila. (1) To learn extent of degree of heterosis exhibited 
in crosses between and within a. homozygous genotypes; b. geographi- 
cal races, ce. sibling species, is a function of level of heterozy- 
gosity. (2) Learn extent that heterosis and developmental homeo- 
stasis are correlated in crosses. (3) Analyse consequences of selec- 
tion for increased developmental homeostasis. 
Ent. 72 
Toxicological Studies on the Gray Garden Slug. To (1) deter- 
mine effect of time, temperature, and moisture on residual life of 
metaldehyde; (2) improve formulation and application of metaldehyde; 
(3) investigate effects of metaldehyde and other chemicals on metabo- 
lism of the slug; (4) screen chemicals as slug toxicants, and (5) 
make ecological studies on the slug. 
Ent., Agr. Chem. 90-1 
The Effects of Sound and Radio Waves on Insects and Rodents. 
To (1) study factors influencing audiogenic seizures in rodents and 
to explore possible uses of these reactions for rodent control; (2) 
explore possible use of sound waves, in sonic and ultrasonic ranges 
for repelling and killing insects; (3) find, if possible, auditory 
end-organs of household insects and study their properties, and 
(4) explore possible use of radio waves for destruction of insects 
and study physiological backgrounds of effects of radio waves on 
insects and fruits. 
Zool.e, Ent. 1115 Coop. USAF-Hawaii 
An Analysis of the Correlations Between Polygene Combinations 
and the Result Expressions of Quantitative Characters. To deter- 
mine (1) effects of diverse modes of breeding selection on gene 
systems controlling single and correlated quantitative characters, 
and (2) relationship between derived gene combinations and expres- 
sions of the characters they control, using Drosphilia melanogaster. 
Bot., Par Path. 1249-A 
Effect of Temperature on Insect Flight Mechanisms. Learn how 
temperature affects the speed, duration, and efficiency of flight. 
Zool., Ent. 1293 
