Biology Commons^™

Laboratory Comparisons Of Two Species Of Liquidambar, Lynn Wellman

Masters Theses & Specialist Projects

Laboratory germinated seedlings of Liquidambar styraciflua L., sweet gum, from Barren County, Kentucky, subjected to a flooding or inundation test were shown to respond in significantly different ways than did the controls. Plants with root systems standing in water showed a much shorter period of non-dormancy than plants that were not subjected to submergence when both were grown under long day, warm temperature conditions in growth chambers. There was no evidence of transfer of a growth retardant or dormin-like compound in water transferred from plants grown under short day (long night) conditions to plants with roots submerged under long day …

Seasonal Abundance & Diversity Of Fishes At Three Stations On The Middle Fork Of Drake's Creek, Warren & Allen Counties, Kentucky, David Bell

Masters Theses & Specialist Projects

A total of 7,485 fish, representing 49 species, 25 genera, and 11 families, were electroshocked from three stations on the Middle Fork of Drake's Creek during the period January, 1972 through January, 1973. Community structure was influenced by seasonal changes in both numbers of species and numbers of individuals. The number of species per collection was at its highest, at all stations, during the month of September. The total number of species and individuals collected at each station progressively increased toward the upstream areas. Eleven of the forty-nine species collected during the course of the study provided 91.8% of the …

The Effects Of Multiple Fin Amputations On Rates Of Fin Regeneration In Goldfish, Carassius Auratus (Linnaeus), Thomas Kozicki

Masters Theses & Specialist Projects

Goldfish, Carassius auratus (Linnaeus), were used in the study of rates of regeneration in all possible combinations of caudal, dorsal, left pectoral, and right pectoral fin amputations. The purpose of this study was to ascertain the effects of multiple injuries on rates of regeneration, to determine rates of regeneration in different fins, to test the hypothesis that rates of regeneration decrease from the proximal to the distal areas of a fin, and to determine the presence or absence of morphogenetic gradients in fin regeneration.

In almost all cases, no significant differences in total regeneration were found to occur when the …

A Study Of Photoperiodic Time Measurement Of Samples From A Michigan Population Of Orconectes Immuni (Hagen), E. Lynn Talton

Masters Theses & Specialist Projects

Experiments were conducted to determine if an hourglass model is the mechanism whereby photoperiodic time is measured by the crayfish, Orconectes immunis. Two experiments were conducted in which there were three series of treatments. Series I and II were T experiments in which T was the total length of the light-dark cycle. In Series I the light phase of the cycle was held at 16 hours with varied lengths of darkness (LD 16:2, T 18; LD 16:8, T 24; LD 16:20, T 36; LD 16:32, T 48). In Series II the dark phase was 8 hours in length and …

The Effect Of Cv-1 Cell Geometry On The Ultraviolet Radiation Sensitivity Of Mammalian Cells In Vitro, Daniel J. Knauer

Masters Theses & Specialist Projects

The effect of cell geometry on the radiosensitivity to ultraviolet (UV) light has been studied in the CV-1 host cell-capacity system. In this system the macromolecular damage incurred by monolayers of cells cultures as the result of exposure to UV radiation is monitored by testing the ability of irradiated cells to support the replication of Herpes simplex virus. The target molecule has been shown to be DNA and is centrally located

Mammalian cells have an absolute requirement for Mg⁺⁺ and Ca⁺⁺ in order to remain attached to artificial substrata. To test the effect of cell geometry on UV …

Ua68/1 Forum, Wku Potter College Of Arts & Letters

WKU Archives Records

WKU Potter College of Arts & Letters faculty newsletter regarding faculty research and publications. This issue includes:

• Mounce, Robert. As I See It - Fletcher Byrom
• Jackson, Carlton. History at Western Kentucky University: A Rationale
• Glaser, Joseph. Nature's Mystic Book: A Report from the New Biology