Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 5 of 5
Full-Text Articles in Entire DC Network
Plasma Levels Of Vitamins A And E In Marine Turtles (Chelonia Mydas And Caretta Caretta), Karen Patricia Frutchey
Plasma Levels Of Vitamins A And E In Marine Turtles (Chelonia Mydas And Caretta Caretta), Karen Patricia Frutchey
Retrospective Theses and Dissertations
Insight into blood values for free-ranging populations of chelonians is very incomplete. A better understanding of marine turtle ecological physiology is necessary for population health assessments and conservation management plans. Vitamins A and E are fat-soluble compounds required by vertebrates. Vitamin A is required for growth, differentiation and integrity of epithelial tissue, bone remodeling, reproduction and vision. Vitamin E is a constituent of cell membranes where it is an antioxidant and free radical scavenger. Both nutrients are required for reproduction and immune system function. I determined concentrations of vitamins A and E in plasma of blood samples from Caretta caretta …
The Effect Of Beach Nourishment On Loggerhead (Caretta Caretta) Nesting And Reproductive Success At Sebastian Inlet, Florida, Richard Michael Herren
The Effect Of Beach Nourishment On Loggerhead (Caretta Caretta) Nesting And Reproductive Success At Sebastian Inlet, Florida, Richard Michael Herren
Retrospective Theses and Dissertations
Beach nourishment has become common in Florida and it occurs on beaches that are major loggerhead (Caretta caretta) nesting grounds. Despite efforts to use beach-quality sand, nourishment sand may be different in grain size, moisture content, shear resistance and temperature when compared to native sand. Two main aspects of loggerhead nesting may be affected by nourishment. First, nourishment may reduce nesting success [(female nesting emergences/ female total emergences) X 100] due to physical barriers (i.e., scarps or steep cliffs) that can impede gravid females. Second, nourishment may reduce reproductive success {i.e., hatching success) by altering the nestsand environment. The objective …
The Effects Of Beach Restoration On Marine Turtles' Nesting In South Brevard County, Florida, Paul W. Raymond
The Effects Of Beach Restoration On Marine Turtles' Nesting In South Brevard County, Florida, Paul W. Raymond
Retrospective Theses and Dissertations
The south Brevard coast of Florida is a major nesting ground for the Atlantic loggerhead turtle (Caretta caretta). A beach restoration project was completed in the winter of 1980-81 at Indialantic and Melbourne Beach. A study was conducted to investigate the effects of beach restoration on marine turtle nesting during the summer months of 1981 and 1982. A 3.1 km restored beach study area and two control beach study areas, each 3.1 km in length and consisting of natural beach sands, were established. The entire study area (9.3 km) was monitored for nesting and non-nesting emergences (false crawls) and a …
Movements And Feeding Ecology Of Immature Green Turtles (Chelonia Mydas) In Mosquito Lagoon, Florida, Mary T. Mendonca
Movements And Feeding Ecology Of Immature Green Turtles (Chelonia Mydas) In Mosquito Lagoon, Florida, Mary T. Mendonca
Retrospective Theses and Dissertations
The seasonal and diel movements of fourteen immature green turtles (Chelonia mydas) in Mosquito, Lagoon, Florida were monitored using sonic telemetry. The feeding ecology of this turtle population was also studied using dissection and stomach flushing techniques. An attempt was made to relate the movement patterns of the turtles to their feeding habits. The immature green turtles were found to make seemingly random, long distance movements (X╠äkm moved/day=7.79) and to remain in deeper waters (X╠ädepth=1.63m), apparently not feeding, when water temperatures fell below 19┬░C. When average water temperatures ranged between 19-25┬░C, the turtles were found primarily in shallow waters (X╠ädepth=1.1m) …
Factors Affecting The Hatching Success Of Loggerhead Sea Turtle Eggs (Caretta Caretta Caretta), M. Angela Mcgehee
Factors Affecting The Hatching Success Of Loggerhead Sea Turtle Eggs (Caretta Caretta Caretta), M. Angela Mcgehee
Retrospective Theses and Dissertations
Clutches of eggs wore collected from nesting loggerhead sea turtles (Caretta caretta caretta) on Merritt Island, Florida, during June - August 1977. Of these, 46 clutches were selected for experimentation to determine the extent to which certain factors affect hatching success. Twelve clutches were divided into subsamples which were incubated in sand maintained at 0, 25, 50, 75, and 100% moisture. Another twelve clutches were divided into subsamples and incubated in sand kept moist with the following percentages of seawater: 0 (distilled water), 25, 50, 75, and 100%; subsamples from four other clutches were subjected to the effects of one …