Life Sciences Commons^™

Comparing Population Density Estimation Techniques For Columbia Black-Tailed Deer (Odocoileus Hemionus Columbianus): Fecal Standing Crop And Distance Sampling Methods, Jubilee D. Brenneman

Honors Projects

I estimated deer density and population size on Blakely Island, WA, using the fecal standing crop (FSC) method described by Martin et al. (2011). I compared the FSC method with a well established and broadly applicable estimation method, distance sampling. Additionally, architecture of a commonly browsed shrub, Ocean Spray (Holodiscus discolor), was measured as an indicator of browsing pressure. Fecal standing crop was estimated by counting pellet groups along 26, 100 x 2m line transects. Deer density was estimated using these data and the equation derived by Martin et al. (2011). Distance sampling consisted of recording perpendicular distance …

Relationships Between Equine Management Practices And Intestinal Parasite Infection, Abigail Pagel

Honors Projects

Parasitology is an important area of veterinary medicine, but the risk factors for high parasite loads are not well-understood. Equine intestinal parasites can cause extensive disease and death. In the current study, the relationship between equine intestinal parasite loads and adherence to veterinary guidelines for equine management practices was studied. Satisfactory adherence to guidelines regarding food, pasture, and flooding management was related to lower parasite loads. Adherence to guidelines regarding deworming, quarantine, bedding, and water did not appear to lower parasite loads. Still, adhering to these guidelines has been shown to improve equine welfare, even if they are not related …

Pcb Effects On Development Of Behavior In Rats, Robert Witte

Honors Projects

Abstract

PCBs were originally used as industrial chemicals in many devices and applications, including electrical capacitors and transformers, lubricants, and sealants in buildings. PCBs have been investigated and their use has been slowly phased out starting in the U.S. in the 1970s. A worldwide ban was put on the use and manufacturing of PCB in 2001, however they remain in the food chain because of their lipophilic properties and their long half-life. Major sources of PCB include wild-life, fish, and other seafood. Individuals exposed to PCB during development can experience negative effects on neurobiological, cognitive, and behavior functioning in both …