VALVERDE, R.A.*; DENVER, R.J.: Molecular Evolution of the Corticotropin-Releasing Hormone Binding Protein Corticotropin-releasing hormone (CRH) is the primary neuroendocrine mediator of the stress response in vertebrates. CRH is known to regulate appetite, locomotion, reproductive processes, and development, either by acting within the central nervous system or by functioning as a hypophysiotropin, regulating the production of […]

SALVANTE, K.G.*; WILLIAMS, T.D.: Hormonal control of reproduction: Effects of corticosterone on timing of laying, egg size, clutch size, and yolk precursor levels Egg formation involves major adjustments in lipid metabolism, including an upregulation of total lipoprotein synthesis, and production of a specific yolk-targeted very-low density lipoprotein (VLDL), and vitellogenin (VTG). Corticosterone (B) is known […]

VAN ROO, B.L.: The Effects of Exogenous Testosterone on Male Incubation in Blue-headed Vireos (Vireo solitarius) Natural variation in circulating testosterone (T) is thought to play a proximate role in inter- and intra-specific variation in paternal care in birds. In previous studies, experimental manipulation of T in males has reduced rates of feeding young in […]

TRAINOR, B. C.; MARLER, C. A.: Testosterone promotes paternal behaviour in a monogamous mammal via conversion to estrogen Typically thought of as a hormone that inhibits paternal behavior, recent correlational and hormone manipulation studies have found that testosterone (T) could actually promote paternal behaviors in mammals. Here we show that in the California mouse, Peromyscus […]

SALTZMAN, W.; PICK, R.R.; SALPER, O.J.; LIEDL, K.J.; ABBOTT, D.H.: Reproductive suppression and reproductive competition in female common marmosets: Effects of an unrelated male Groups of cooperatively breeding common marmoset monkeys (Callithrix jacchus) often contain only a single dominant, breeding female; subordinate females typically undergo behavioral and physiological suppression of reproduction. However, recent findings indicate […]

SCHMAEMAN, C.N.*; MENDON�A, M.T.: Non random mating in big brown bats? Very little is known about the mating systems of temperate vespertilionid bats. Available data is usually anecdotal and only represents a snapshot of which males are successfully mating in the population. Furthermore, there has been no study monitoring male mating success over time. We […]

MENDON�A, , M.T.: Effects of temperature on mating discrimination in male big brown bats Previous experiments in our laboratory have explored the role of temperature in stimulating mating in male big brown bats. Changes in temperature have been found to modulate the frequency of mating behavior. Although males will continue to mate even when kept […]

STEELE, S.L.*; YANCEY, P.H.; WRIGHT, P.A; University of Guelph, Ontario; Whitman College, Walla Walla WA; University of Guelph, Ontario: Osmoregulation and Nitrogen Excretion in the Embryonic Little Skate (Raja erinacea) Marine elasmobranchs maintain high levels of organic osmolytes in their tissues to counteract the dehydrating force of seawater. Some adult elasmobranchs are able to adapt […]

WILLETT, C. S.*; BURTON, R. S.; Univ. of North Carolina, Chapel Hill; Scripps Institution of Oceanography: Molecular genetics of osmoregulation: Regulation of free amino acid accumulation in copepods under hyperosmotic stress The intracellular accumulation of free amino acids is a common response of diverse organisms to increasing salinities in the extracellular environment. In crustaceans, proline […]

RODELA, T.M.*; BALLANTYNE, J.S.; WRIGHT, P.A.; University of Guelph; University of Guelph; University of Guelph: Mitochondrial Urea Transporters: A Teleost versus Elasmobranch Comparison Urea is an important organic osmolyte in elasmobranches. In teleosts, urea synthesis may be a valuable strategy to detoxify ammonia or urea may be simply the end product of arginine catabolism. Urea […]