Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Life Sciences
Description And Alleviation Of The Stress Response In Atlantic Sharpnose Sharks (Rhizoprionodon Terraenovae), White-Spotted Bamboo Sharks (Chiloscyllium Plagiosum), And Golden Shiners (Notemigonus Crysoleucas), Lauren Nicole Fuller
Electronic Theses and Dissertations
Sharks are an essential component of many marine ecosystems; however they have experienced population declines mainly attributed to overfishing and capture of sharks as bycatch. Despite sharks often being released when captured as bycatch the act of capture can result in a stress response which may cause severe physiological perturbations. Studies have investigated the physiological impacts of capture stress on elasmobranchs but most have primarily focused on the secondary stress response. I conducted a series of studies to further describe the primary stress response through quantification of adrenocorticotropic hormone (ACTH) while also investigating methods such as sedation and limiting air …
Application And Refinement Of Molecular Ecology Techniques For Amphibian Conservation, Stephanie Marie Burgess
Application And Refinement Of Molecular Ecology Techniques For Amphibian Conservation, Stephanie Marie Burgess
Electronic Theses and Dissertations
Wildlife conservation has become increasingly difficult due to habitat loss habitat fragmentation and land use change. Thus conservationists have embraced advances in molecular ecology such as landscape genetics and microbial bioinformatics that employ genetic techniques to further understand the relationship between individuals and their environment. In landscape genetics model inferences can be used to identify features that facilitate or resist gene flow providing a framework for anticipating the impacts of land use changes on a species’ ability to disperse. However the factors that affect the transferability of landscape genetics inferences are poorly understood and little is known about the effect …
Phylogeography Of The Malagasy Ant Species Otontomachus Coquereli, Jason Jackson
Phylogeography Of The Malagasy Ant Species Otontomachus Coquereli, Jason Jackson
Electronic Theses and Dissertations
Madagascar is an extremely diverse and geographically complex area boasting levels of endemism that blatantly raise questions about their origins. There is evidence that these endemics arose via insitu diversification during Madagascar's ~88 million year isolation, even though it was essentially in the middle of Gondwana with ample opportunity to acquire inhabitants. Madagascar's high levels of diversity and endemism make it an ideal location to study speciation, especially considering the evidence that such high levels speciation occurred in Madagascar itself. Several hypotheses have been formulated to relate the complex geography to genetic divergence, and thereby speciation. I explore three hypotheses …