The crawfish enterprise of South Louisiana is shown to haveexpanded as much as 18-fold since the 1950's. It is estimated(1973) that there are about 44,000 acres of managed crawfish ponds.Of the 334 ponds identified and mapped in the thesis, 231 are classedas open ponds, 45 as rice field ponds, and...
Ninety-six hour acute toxicity bioassays were employed to
determine the tolerance of juvenile coho salmon to chlorinated
stabilized kraft mill effluent (SKME). In addition the effect of
chlorinated SKME on the growth of juvenile coho salmon in six and
ten day experiments was studied.
Results of the acute toxicity tests...
The detection and antigenic nature of the causative Corynebacterium
of bacterial kidney disease and chemotherapy of this disease
in juvenile coho salmon (Oncorhynchus kisutch) were examined.
Each of 207 yearling coho salmon collected from a population
undergoing a severe epizootic of bacterial kidney disease were examined
for the presence of...
Unfertilized ova from spring chinook salmon (Oncorhynchus
tshawytscha) were examined for the presence of classical salmonid
inmmunoglobulin. Immunodiffusion techniques in which rabbit anti-salmonid
immunoglobulin was reacted against an ova homogenate
and rabbit anti-ova homogenate was reacted against immune chinook
serum failed to detect classical-type antibodies within these eggs.
A lectin...
Inclusion of substantial levels of raw-frozen Pacific hake
(Merluccius productus) in diets of ranch-raised mink (Mustela vison)
causes a large percentage of animals to develop an abnormal condition
termed "cotton fur" (CF), characterized by depressed body
weight, microcytic-hypochromic anemia and a failure of under-fur
pigmentation. Observations by several groups of...
A Willamette sandy shot loam was treated with ZnC1₂, CdC1₂, or sewage sludge to determine the chemical fate of added Cd and Zn in the soil and their influence on the growth of corn and wheat seedlings. Cadmium was added as CdC1₂ at rates of 0, 5, 20, or 80...
The Purpose of the Study
The central purpose of this study was to determine if certain
personality characteristics differ between community college persisters
and those who drop out of school. The following 12 a priori
hypotheses involving six Adjective Check List personality scales were
tested:
1. Male persisters would have...