Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16780
Mass movement of black fly larvae on silken threads (Diptera: Simuliidae)
Stoppage of waterflow in a stream resulted in the migration of massive numbers of black fly larvae on silken threads. Larvae were found on single silken threads, but the heaviest concentrations were on “cables” composed of 25-50 individual silken threads. The larvae were attached in concentric rings around the silken threads and cables.
Authors
I.B. Tarshis, W. Neil
A note on the stomach contents of two whooping cranes
On 4 January 1968 an adult female Whooping Crane (Grus americana) was illegally shot by a hunter near the Aransas National Wildlife Refuge, Texas. The carcass was immediately frozen and subsequently shipped to the Patuxent Wildlife Research Center for autopsy.
Authors
Francis M. Uhler, Louis N. Locke
Measurements of brown pelican eggshells from Florida and South Carolina
No abstract available.
Authors
L. J. Blus
Records of the brambling in North America
A Brambling, Fringella montifringella, was seen regularly in Portland, Oregon, from 22 November 1967 to 3 April 1968 and photographed by many people. First discovered at a feeder in the northeast section of the city by Jeff Gilligan and Ron Klein, from January on it was a daily visitor to the feeder of the Albert H. Praels in the same part of Portland. The bird, judged by plumage to be a male, fed
Authors
Richard C. Banks
Organochlorine insecticide residues in soils and soil invertebrates from agricultural lands
Soils and earthworms and other soil invertebrates were collected from 67 agricultural fields in eight States. Samples were analyzed by gas chromatography for DDE, DDD, DDT, aldrin, dieldrin, endrin, heptachlor, heptachlor epoxide, and gamma-chlordane insecticides. Organochlorine insecticides in soils averaged 1.5 ppm, dry weight, and in earthworms, 13.8 ppm. Residues in earthworms averaged nine
Authors
C.D. Gish
Toxicity of DDT to Japanese quail as influenced by body weight, breeding condition, and sex
Controlled experiments were utilized to simulate the stresses on wild birds of breeding condition and of weight loss due to migration. Light conditions in the laboratory were manipulated to produce Japanese quail (Coturnix coturnix japonica) in breeding condition and not in breeding condition. Within each of these groups, some birds were partially starved before dosage and some were fully fed. Bir
Authors
C.D. Gish, N.J. Chura
Soil-food chain-pesticide wildlife relationships in aldrin-treated fields
Soil-food-chain-pesticide wildlife relationships were investigated to learn the concentration of pesticide residues present in soils, macro-invertebrates, vertebrates, and seeds as a result of annual applications of aldrin at recommended rates for pest control. Two central Missouri cornfields treated witb aldrin at 1 lb/acre, for 16 and 15 of the past 17 years, were selected for study during 1965
Authors
L.J. Korschgen