Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16780
Effect of method of introducing well water on the growth, body chemistry, and incidence of eye abnormalities of juvenile brown and rainbow trout
No abstract available.
Authors
H. A. Poston, D.L. Livingston, D.G. Hedrick
Endrin uptake and release by fingerling channel catfish (Ictalurus punctatus)
No abstract available.
Authors
R.L. Argyle, G.C. Williams, H.K. Dupree
Effect of overhead cover on growth and survival of channel catfish in circular tanks
No abstract available.
Authors
K.O. Allen
Changes in the visual pigments of trout
The proportions of two visual pigments (rhodopsin and porphyropsin) were examined in four species of trout under experimental and natural conditions. Brook trout (Salvelinus fontinalis), rainbow trout (Salmo gairdneri), and brown trout (Salmo trutta) have different relative proportions of visual pigments in their retinae. The visual pigment balance in wild cutthroat trout (Salmo clarki) is related
Authors
D.M. Allen, W.N. McFarland, F.W. Munz, H. A. Poston
Myxosoma cerebralis: isolation and concentration from fish skeletal elements - trypsin digestion method
No abstract available.
Authors
M.L. Landolt
Effect of mercuric chloride feeding on sexual maturity, egg production and fertility in Japanese quail
Japanese quail (Coturnix c. japonica) were fed 0, 8, 16 or 32 p.p.m. of mercury as mercuric chloride from 3 days of age through 20 weeks of age. The onset of egg production generally occurred earlier for hens fed HgCl2. Average age in days at first oviposition for the control, 8 p.p.m., 16 p.p.m. and 32 p.p.m. was 48.4, 50.9, 46.9 and 44.0 respectively. The average rate of egg productivity from
Authors
E. F. Hill, C.S. Shaffner
Sea birds wintering off Maryland shores, 1972-73
During the winter of 1972-73, studies were conducted to determine the status and distribution of pelagic species of birds occurring at sea as far as 38 miles east of Ocean City, Md. The wintering off-shore avifauna was found to be impressively rich in variety of species and numbers of individuals. Sightings included Fulmar and Skua, both first sight records for Maryland. Large alcids, especiall
Authors
R.A. Rowlett
Two new diving duck hosts for Plasmodium circumflexum
No abstract available.
Authors
R. M. Kocan, J.O. Knisley
Effect of salt on the response of birds to sucrose
The preference of male red-winged blackbirds for solutions of sucrose and sucrose with 0.03 M sodium chloride was tested, using a two-bottle choice test. Preliminary experiments demonstrated that the birds were indifferent to 0.03 M NaCl in water. Both control and experimental animals exhibited indifference to the solutions at the lowest concentration and aversion at the highest. The data sugge
Authors
J.G. Rogers, O. Maller
Re-evaluation of some Montana bird records
No abstract available.
Authors
P.D. Skaar, R. B. Clapp, R.C. Banks
The seventy-third Christmas bird count. 327. Little Creek, Va
No abstract available.
Authors
P. Sykes
The seventy-third Christmas bird count. 314. Back Bay National Wildlife Refuge, Va
No abstract available.
Authors
P. Sykes