Life Sciences Commons^™

The Effects Of Dieldrin On Chickens, Sondra Severson

Journal of the Minnesota Academy of Science

In this study, insecticide residues in chicken eggs, livers, and fats were monitored in a flock of chickens for seventy-nine days. The test group was fed dieldrin in their drinking water for eighteen days and then was returned to normal water for forty-two more days. The sacrificed birds of the test group showed a 0.39 ppm average increase in dieldrin residue in the eggs, 0 .14 ppm in the livers and 9.54ppm in the fats when compared with the control eggs. livers and fats respectively. The I-test calculations showed these results to be significant.

Observations of the embryos from the …

Vasectomization & Colloidal Particle Uptake By Cells Of The Caput Epididymis, Gaylan Smith, Wayne A. Becker

Journal of the Minnesota Academy of Science

India ink was injected into the rete testes of 15 male mice and 15 male rats. The progress of the particulate matter through the epididymis was examined by histological methods at intervals from 4 to 24 hours. Preliminary observations suggest that vasectomization does not alter the ability of the proximal caput epididymis to absorb particulate matter.

Fish Species, Some Uncommon, Collected From The Lower Minnesota River, Daniel B. Wilcox, Bruce D. Lorenz, Vincent Kranz

Journal of the Minnesota Academy of Science

Fish collections were made in the lower Minnesota River in the vicinity of the Black Dog Generating Plant and at the intake structure of the plant from April, 1976, to April, 1977 as part of a section 316(b) demonstration study. Composition of the fish community of the area is reported along with notes on several species whose occurrence was considered unusual . New information on the occurrence of river carpsucker (Carpiodes carpio Rafinesque) and river darter (Percina shumardi, Girard) to the Minnesota River is also presented.