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The Effect of Intermediate Doses of Roundup® on the Larval Development, Survival, Oviposition and Fitness of Culex quinquefasciatus
No full textThe southern house mosquito, Culex quinquefasciatus, is a vector to many pathogens in Southern California, including West Nile Virus and St. Louis Encephalitis Virus. Immature stages of mosquitoes may be exposed to Roundup®, a frequently used herbicide worldwide, due to surface runoffs or overspraying and subsequent drifting. Previous studies have shown some negative impacts of sublethal doses of Roundup® during the developmental stage of Culex quinquefasciatus, such as physiologic changes and prolonged larval stage or the high mortality of larvae due to exposure to the high doses of glyphosate. This study investigated the effect of intermediate doses of Roundup® (10 mg/l and 100 mg/l) on Culex quinquefasciatus when immature stages are exposed to this herbicide. Experiments were conducted in the Environmental Chambers at CSU San Bernardino at 27 ± 2°C, RH 70 ± 5%, and 12:12 hour Photoperiod.
Results indicated prolongation of the larval period and delays in pupation upon exposure to the above concentrations of Roundup®. The results also indicated that as the dose of glyphosate increased, the yield of adult emergence decreased. Oviposition experiments have shown fewer egg rafts oviposited as Roundup® concentration increased. Another interesting observation was a significant increase in the adult wingspan when the exposure dose at the larval stage was increased from 10 mg/l to 100 mg/l
Roger Sargeant
No full textPortrait of Roger Sargeant (black-and-white photograph).https://scholarworks.lib.csusb.edu/bridges-photographs/1102/thumbnail.jp
Rosemary Jones and child
No full textPortrait of Rosemary Jones and a child by Marine Corps Base Camp Pendleton housing (black-and-white photograph).https://scholarworks.lib.csusb.edu/bridges-photographs/1310/thumbnail.jp
Shared Governance and Professional Equity for Lecturers in the California State University System
No full textHigher education’s overreliance on contingent faculty has resulted in several concerning issues for the professoriate. Much of the research on contingent faculty has centered on the exploitative working conditions and marginalization of adjunct faculty, but little research has been conducted on how the bifurcation of faculty into a two-tier system manifests itself within two core practices in the academy: shared governance and the professionalization of faculty. This study examined the shared governance documents (SGDs) of twenty-three campuses in the California State University system for the levels of inclusion in consultation afforded to each campus’s non-tenure-track (NTT) lecturer faculty, as well as the ways in which the policies of these campus senates reflect professionally equitable language and practices. It was determined that there were large variances between campuses in terms of Lecturer inclusion and professional equity, but the campuses with the highest shared governance inclusion were largely also at the top in terms of professionally equitable language and practice. Recommendations for how to ensure inclusion and professional equity for NTT faculty are offered
Mrs. Butler and teenagers
No full textGroup portrait of Merlene, Wilamea, Claude Duckett, and Mrs. Butler around a couch (black-and-white photograph).https://scholarworks.lib.csusb.edu/bridges-photographs/1325/thumbnail.jp
Frankie and Jack Pruitt
No full textPortrait of Frankie Pruitt and grandfather Jack Pruitt in front of a house (black-and-white photograph).https://scholarworks.lib.csusb.edu/bridges-photographs/1336/thumbnail.jp
Leroy Butler at the Second Baptist Church
No full textView of Leroy Butler at a table with others in the Second Baptist Church dining room (black-and-white photograph).https://scholarworks.lib.csusb.edu/bridges-photographs/1339/thumbnail.jp
Kenny and Dean Pruitt and Boyd Epps
No full textGroup portrait of Kenny Pruitt, Boyd Epps, and Dean Pruitt posing with smoking pipes (black-and-white photograph).https://scholarworks.lib.csusb.edu/bridges-photographs/1338/thumbnail.jp
Susie Pruitt and Claude Duckett
No full textPortrait of Susie Pruitt and Claude Duckett across from the Second Baptist Church (black-and-white photograph).https://scholarworks.lib.csusb.edu/bridges-photographs/1341/thumbnail.jp
