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The Effect Of Photoperiod On The Regressive Phase Of The Ovarian Cycle Of The Lizard, Anolis Carolinensis., John Dickens Pinch
The Effect Of Photoperiod On The Regressive Phase Of The Ovarian Cycle Of The Lizard, Anolis Carolinensis., John Dickens Pinch
Master's Theses
The effects of constant photoperiod (14 hours of light) and decreasing photoperiod (13-8 hours of light) on the regressive phase of the ovarian cycle of the lizard Anolis carolinensis were investigated. Changes in body, liver, ovary and oviduct weights were measured and microscopic examinations of several ovarian parameters were made. In both light regimens body and liver weights decreased over the first four weeks of the experiment but both increased at the sixth week. In addition, ovary weight was highly variable but exhibited a decreasing trend and oviduct weight decreased. There were decreases in the number of previtellogonic follicles and …
Reproduction By Adfluvial Salmonids In Spawn Creek, Cache County, Utah, David R. Bernard
Reproduction By Adfluvial Salmonids In Spawn Creek, Cache County, Utah, David R. Bernard
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The migration and production of indigenous populations of brown, brook, and cutthroat trouts in Spawn Creek, Cache County, Utah, were studied in 1973 and 1974 to elucidate the role of this stream vis-a-vis the rest of the watershed. Spawn Creek and its watershed were described climatically, hydrologically, geologically, vegetatively, recreationally, and chemically. The prevalent, aquatic taxa of fauna and flora were also listed. The equipment and techniques used in the study to collect data, including a two-way fish trap and electro-fishing gear, were delineated. The collected data consisted of periodic estimates of mean weight and density stratified by year classes. …
Reproductive Parameters For Nine Avian Species At Moore Creek, Merritt Island National Wildlife Refuge, G. Tanner Girard
Reproductive Parameters For Nine Avian Species At Moore Creek, Merritt Island National Wildlife Refuge, G. Tanner Girard
Retrospective Theses and Dissertations
No abstract provided.