Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"steroid concentrations"”.
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Neonatal exposure to estradiol in female rats influences neuroactive steroid concentrations and behaviour in the adult rat
The gonadal steroids, in particular estradiol, exert an important action during perinatal period in the regulation of sexual dimorphism and neuronal plasticity, and in the growth and development of nervous system. Exposure of the developing female to estrogens during perinatal period may have …
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Occurrence, Fate and Transport of the Primary Metabolites of Trenbolone Acetate in CAFO Soils and Surface Water Runoff
… the primary metabolites of the synthetic steroid trenbolone acetate. Therefore, to measure steroid concentrations of these metabolites in feedlot runoff, a series of rainfall simulation experiments were conducted on research feedlots at the University of California, Davis, Animal Science …
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Female Reproductive Tract Fluids and Their Influence on Capacitation of Bovine Spermatozoa
… and follicular fluids were analyzed for protein, steroids and metabolic substrates based on stage of the cycle and follicular size respectively. Uterine fluids contained more protein than oviducal fluids and pyruvate and lactate concentrations in both fluids showed an inverse relationship based on …
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Reproductive Endocrinology of the Ozark Hellbender, Cryptobranchus Alleganiensis Bishopi
Seasonal changes in steroid concentrations in the serum of adult Ozark hellbenders, Cryptobranchus alleganiensis bishopi, were investigated from June 1993 to December, 1993. These dates included the periods before, during and after the breeding season. Radioimmunoassays were performed to measure …
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Benzo[a]pyrene effects on Fundulus heteroclitus reproductive endpoints
… Adult fish were exposed to waterborne BaP concentrations of (0, 1 or 10 μg/L) for 28 days. Males and females were combined for the second half of the exposure (days 14-28) in order to quantitate egg production and fertilization success. Egg fertilization and subsequent hatching success of …
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Female Social Rank and Steroid Production in Semi-Free Ranging Lemur Catta on St. Catherines Island, Georgia
… social status with the production of three steroid products: estradiol, progesterone, and testosterone. Biological samples (n=192) were taken in summer 2012 from a captive population (n=93) of semi free-ranging <em>L. catta </em>on St. Catherines Island, GA. Samples (n=15) were analyzed for …
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Reproductive Delay In The Female Cape Ground Squirrel (xerus Inauris)
… Hormonal data was analyzed through the use of steroid enzyme immunoassay analysis to quantify the concentration of gonadal hormone in fecal samples which indicate the onset of sexual maturity. Prior to the start of the field season, I conducted an initial experiment to determine the best …
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Lake Sturgeon (Acipenser fulvescens) Population Attributes, Reproductive Structure, and Distribution in Namakan Reservoir, Minnesota and Ontario
… 2009 using plasma testosterone and estradiol-17β concentrations. Age of lake sturgeon > 75 cm ranged from 9 to 86 years of age (n=533, mean=36 years). Using logistic regression analysis, I found that total annual precipitation was positively associated with lake sturgeon year class strength in …