380 NATIONAL OCEANOGRAPHIC PROGRAM—1965 
15. The nature of cellular response in various Great Lakes 
organisms. 
a. Dr. Dominic L. Degiusti, Professor of Parasitology and 
Biology, Wayne State niversity. 
b. To study the ecology of parasitism in a small stable 
stream environment. 
2 ec. ‘the morphology and Jife cycle of a number of Great Lakes 
organisms are being studied on various lish coasts. 
16. The sexual hormones of achlya bisexualism. 
a. Alma W. Barksdale, Seniigr Research Associate, New York 
Botanical Garden, 
b, To study sexual reproduction in certain species of water 
mold in the Great Lakes area, 
ce. Reproduction is initiated and regulated by a series of 
substances secreted by the sexually reactive thalli. The nutritional and 
environmental conditions necessary for maximum production of hormones are 
determined; this hornon: is extracted, surified and studia® with resnect to 
sexual reproduction. 
#17. Chronic effects of stabie organic substances on sunfish. 
a. Dr. John Cairns, Associate Curator of Limnolory. New Yor. 
Academy of Natural Sciences, 
b. To study chronic effects of subweakened oncentxations of 
stable complex organic compounds upon the brue gill sunfish. 
c. Oxygen uptake, “ruising speed, fatigue, and tissue changes 
in the gills are examined relative to the effect of various compounds upon 
the glue gill sunfish.’ 
#18, Factors influencing free living nematodes in water supplies. 
a. Mr. R. S. Engelbrecht, Professor of Sanitary Engineering, 
University of Tllinois. 
b. To study the fundamental factors surrounding the presence 
of free living nematodes in water supplies. 
ec. The ecology of these worms is studied both in raw water 
and under laboratory conditions. Environmental control measures are evaliated 
as are present day water treatment methods for removal of these creatures 
from water supplies. Food and feeding habits of the worms are also investigaved. 
