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Developing Commercial-Scale Low-Salinity Culture Protocols For Gulf Killifish, Fundulus Grandis, Brittany Morgan Chesser
Developing Commercial-Scale Low-Salinity Culture Protocols For Gulf Killifish, Fundulus Grandis, Brittany Morgan Chesser
Theses and Dissertations
Gulf Killifish Fundulus grandis is an estuarine species used as a live bait for marine sport fishes, native from Veracruz, Mexico, along the Northern Gulf of Mexico coast, to the eastern coast of Florida. Culture protocols are established, but Gulf Killifish have not been fully adopted as a commercially produced species by producers, possibly due to economic efficiency and needs for advances related to inland production. Therefore, production methods from spawning in recirculating aquaculture systems (RAS) to grow-out to market size in earthen ponds were examined. Increasing broodstock density or spawning substrate surface area did not increase egg production in …
Geologic Analysis Of The Upper Jurassic Cotton Valley Formation In Jefferson County, Mississippi, James Michael Brooke
Geologic Analysis Of The Upper Jurassic Cotton Valley Formation In Jefferson County, Mississippi, James Michael Brooke
Theses and Dissertations
Though the Cotton Valley Group is productive in Mississippi, Louisiana, and Texas, little is known about production potential of the Bossier Formation (Lower Cotton Valley Shale) in southwest Mississippi. The Bossier Formation in Jefferson County, Mississippi is an organic-poor, carbonate-rich mudrock with siliciclastic intervals. Examination of cuttings by petrographic and scanning electron microscopy revealed fractures that have been filled by calcite and poreilling pyrite. Porosity exists within and around pyrite framboids, in unfilled fractures, and within peloid grains. Organic matter is rare in Lower Cotton Valley samples suggesting it is not self-sourcing. Total Organic Carbon (TOC) values are low (0.86-1.1% …
Economic Impact Of On-Board Module-Building Cotton Harvesters On Replacement Schedule And Harvest Costs, Matthew Alan Farrell
Economic Impact Of On-Board Module-Building Cotton Harvesters On Replacement Schedule And Harvest Costs, Matthew Alan Farrell
Theses and Dissertations
The purpose of this study is to further understand the economic impact of the new on-board module-building cotton harvesters that both John Deere and Case IH have introduced to the market. This study will examine two different areas, the optimal asset replacement schedule and a machine’s performance rate’s effect on harvest costs due to rainfall loss. Using data collected from Willcut (2008), USDA crop progress reports, and a USDA weather station, models will be used to study the areas in question. The findings are that, the age of the associated assets begin replaced with the conventional harvester and the number …