Thesis (M.S.)--Oregon State University, 2000. / Typescript (photocopy). Includes bibliographical references (leaves 62-63). Also available on the World Wide Web.

"A thesis submitted to the Graduate Faculty of Georgia Southern University in partial fulfillment of the requirements for the degree Master of Science." Title from PDF of title page (Georgia Southern University, viewed on May 1, 2010). David Rostal, major professor; Lance McBrayer, Ann Pratt, John Harrison, committee members. Electronic version approved: December 2009. Includes bibliographical references (p. 37-40).

Thesis (M.S.)--Auburn University, 2008. / Abstract. Includes bibliographical references.

Thesis (M.S.)--Georgia Southern University, 2006. / "A dissertation submitted to the Graduate Faculty of Georgia Southern University in partial fulfillment of the requirements for the degree Master of Science" ETD. Includes bibliographical references (p. 78-81) and appendices.

Thesis (M.S.)--University of Nevada, Reno, 2008. / "August, 2008." Includes bibliographical references (leaves 37-42). Online version available on the World Wide Web.

Desert tortoises (Gopherus agassizii) occurring east and south of the Colorado River form the "Sonoran population," a regulatory designation of the U.S. Fish and Wildlife Service, whereas tortoises west and north of the river constitute the "Mojave population." This distinction is based on significant genetic, morphometric and ecological differences. However, mitochondrial DNA, morphometric, and ecological data from the eastern bajada of the Black Mountains (about 40 km east of the Colorado River) identify the evolutionary affinities of those tortoises as Mojavean: ten of eleven Black Mountain tortoises possessed the Mojave genotype, twenty-four of thirty-seven tortoises predominantly expressed the Mojave phenotype, and all tortoises were similar to Mojave populations in macrohabitat selection. Some ecological and behavioral attributes such as home range size and hibernaculum selection did not differ among Mojave, Sonoran, and Black Mountain tortoises. Several hypotheses on how the Mojave trait became established in the Black Mountains are discussed.

No description available.

Wolbachia are bacteria that infect and induce reproductive alterations in a large number of arthropods. The present study was undertaken to improve our understanding of the effects that Wolbachia have on the reproductive biology of the leaf beetle Chelymorpha alternans Boh, in Panama. Two strains of Wolbachia occur in C. alternans, both of which induce some degree of cytoplasmic incompatibility (CI), a reproductive problem occurring when individuals bearing different infection status are mated together resulting in lowered levels of egg fertility. I attempted to localize where Wolbachia occurs in highest density in male reproductive tissues and to see if variation in Wolbachia density was associated with levels of CI in crossing experiments involving males (1) differing in age, (2) carrying different strains and (3) belonging to different populations previously known to vary in their levels of CI. Wolbachia were found to occur only in the somatic cells surrounding the testis, rather than in the germ cells, and yet were capable of inducing strong CI. Male age, infection status and provenance all were factors affecting the level of CI induced.

No description available.

No description available.