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Some Aspects Of Amino Acid Regulation In The Tobacco Hornworm, Manduca Sexta, J. Michael Henry

Masters Theses

The nature and roles of the high free amino acid levels found in the haemolymph of insects is poorly understood. In order to elicit aspects of the regulation and metabolism of haemolymph free amino acids, we have measured the concentrations, half-lives, turnover rates and rate of incorporation into haemolymph proteins for eight amino acids in the tobacco hornworm Manduca sexta immediately prior to and throughout the larval-pupal transformation. Throughout this period the concentrations of alanine, arginine, glutamate, histidine, leucine, lysine, proline and valine each exhibited stage specific variations seemingly independent of blood volumes and levels of other amino acids. Half-lives …

Reproductive Biology Of Black Bears In The Smoky Mountains Of Tennessee, John Heinrich Eiler

Masters Theses

Information related to the reproductive biology of female black bears (Ursus americanus) was collected in the Smoky Mountains of Tennessee. Denning and weight information were also collected.

The majority of females utilized tree dens. The denning period averaged 114 days, with most females entering dens during the first 3 weeks of December and emerging from dens between the first and last week of April. Females with newborn cubs denned longer and emerged from dens later than females without offspring. The date of den emergence for females for females was used to effectively predict reproductive condition (with newborn cubs or without …