Results 121 to 130 of about 671 (171)
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Successive reversal learning in the bob-white quail (Colinus virginianus)
Animal Behaviour, 1967Four Bob-white quail (Colinus virginianus) were run on a series of twenty-five reversals of a discrimination involving simultaneous presentation of horizontal and vertical stripes. Analysis of five reversal blocks revealed a decrease in errors to criterion between the first and last block (t=2·50 ...
L J, Stettner, W J, Schultz, A, Levy
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Distribution and excretion of hexachlorobenzene in bobwhite (Colinus virginianus)
Journal of Toxicology and Environmental Health, 1983After a single dose of [14C]hexachlorobenzene (HCB) via gavage into the crop, the accumulation of [14C]HCB in female bobwhite (Colinus virginianus) tissues occurred to the greatest extent in adipose tissue followed by skin, liver, brain, heart and kidney, whole blood, and muscle.
W J, Breslin, M R, Bleavins, R K, Ringer
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DEVELOPMENTAL STAGES OF THE BOB-WHITE QUAIL EMBRYO (COLINUS VIRGINIANUS)
The Biological Bulletin, 1965Since the well-known work by Hamburger and Hamilton ( 195 1) on normal chick enlbyros appeared, a number of workers have “? staged― embryos of various species of birds. They clearly established morphological and structural characteris tics as more reliable criteria than chronological age in the staging of chick enibryos. Rempel and Eastlick ( 1957)
A G, Hendrickx, R, Hanzlik
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Thyroid hormone changes in the bobwhite (Colinus virginianus) after hatching
General and Comparative Endocrinology, 1984Total concentrations of thyroxine (T4) and triiodothyronine (T3) in plasma, and their biological half-lives were measured in adult and immature bobwhite. Concentrations of T4 and T3 decreased approximately 75% from Days 1 to 10 after hatching. After Day 10, the concentration of T4 did not significantly change as a function of age; however, the ...
D E, Spiers, R K, Ringer
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Oral Lead Bullet Fragment Exposure in Northern Bobwhite (Colinus virginianus)
Archives of Environmental Contamination and Toxicology, 2011Lead (Pb) is a worldwide environmental contaminant known to adversely affect multiple organ systems in both mammalian and avian species. In birds, a common route of exposure is via oral ingestion of lead particles. Data are currently lacking for the retention and clearance of Pb bullet fragments in gastrointestinal (GI) tract of birds while linking ...
Richard, Kerr +8 more
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Synchronization of Hatching in American Bobwhite Quail (Colinus virginianus)
Nature, 1964IT is known that chicken embryos show great variation in their rate of development. This is due to three main factors: variations in the latent period, variations in the environmental factors of incubation and the inherent variations of the embryos themselves1,2.
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Effects of DDT on bobwhite quail (Colinus virginianus) adrenal gland
Bulletin of Environmental Contamination and Toxicology, 1974A wide range of responses to sublethal levels of DDT exist, many of which are species specific and vary within each species depending upon age, sex, and physiological state. Sublethal levels of DDT do cause an increase in the adrenal cortical tissue of bobwhite quail, which may cause increased secretion of corticosteroids, and in turn affect ...
J W, Lehman, T J, Peterle, C M, Mills
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Adenovirus Isolation and Serology from Wild Bobwhite Quail (Colinus virginianus)
Avian Diseases, 1981SUMMARY Adenoviruses isolated from the ceca of two wild bobwhite quail (Colinus virginianus) with hepatic inclusion bodies were classified as avian adenoviruses, serotype TR-59. Serum samples from the same population of bobwhites were negative for serotype TR-59 neutralizing antibody, but 23%o were positive for quail bronchitis virus antibody.
D J, King, S R, Pursglove, W R, Davidson
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Pilot Study of Antimicrobial Resistance in Northern Bobwhites (Colinus virginianus)
Avian Diseases, 2017Antimicrobial resistance (AMR) is an important issue for both wildlife conservation and public health. The purpose of this study was to screen for AMR in fecal bacteria isolated from northern bobwhite (Colinus virginianus), a species that is an ecologically and economically important natural resource in the southern United States.
Michael, Zhang +4 more
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