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Biology

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University of Central Florida

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Reproductive success

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Determining The Impacts Of Beach Restoration On Loggerhead (Caretta Caretta) And Green Turtle (Chelonia Mydas) Nesting Patterns And Reproductive Success Along Florida's Atlantic Coast, Allison Whitney Hays Jan 2012

Determining The Impacts Of Beach Restoration On Loggerhead (Caretta Caretta) And Green Turtle (Chelonia Mydas) Nesting Patterns And Reproductive Success Along Florida's Atlantic Coast, Allison Whitney Hays

Electronic Theses and Dissertations

Artificial beach nourishment, the most common method to mitigate coastal erosion in the United States, is also considered the most ecologically friendly alternative for shoreline stabilization. However, this habitat alteration has the potential to impact nesting marine turtles and developing hatchlings. The first objective of this study was to determine how nourishing beaches with two different design templates affects loggerhead (Caretta caretta) and green turtle (Chelonia mydas) nesting success, the ratio of nests to the total number of nests and non-nesting emergences, and reproductive success, the ratio of hatched and emerged hatchlings to the total number of eggs deposited. Two …


Sex-Biased Parasitism And The Reproductive Costs Of Parasites In A Social African Ground Squirrel, Melissa Ann Hillegass Jan 2007

Sex-Biased Parasitism And The Reproductive Costs Of Parasites In A Social African Ground Squirrel, Melissa Ann Hillegass

Electronic Theses and Dissertations

Vertebrate males frequently carry higher numbers of parasites than females. This bias in parasite loads could be a consequence of sexual selection. Grouping species are also assumed to be afflicted with larger numbers of parasites than solitary animals and associated costs of this parasitism could vary with group size or structure. I examined sex-biased parasitism and the influence of group size on parasite loads in Cape ground squirrels (Xerus inauris), a highly social species that occurs in the arid regions of southern Africa. Males carried three times as many ectoparasites as females, but females harbored nearly three times more endoparasites …


Effects Of A Shore Protection Project On Loggerhead And Green Turtle Nesting Activity And Reproduction In Brevard County, Florida, Kelly Brock Jan 2005

Effects Of A Shore Protection Project On Loggerhead And Green Turtle Nesting Activity And Reproduction In Brevard County, Florida, Kelly Brock

Electronic Theses and Dissertations

Marine turtle reproductive success is strongly correlated with the stability and quality of the nesting environment. Because females show fidelity to key nesting beaches, the management and physical characteristics of these beaches directly affect future generations of marine turtles and may be essential for the recovery of these threatened and endangered species. The impacts of beach restoration on loggerhead turtles (Caretta caretta) and on green turtles (Chelonia mydas) were investigated. Previous studies concerning beach nourishment projects have focused on loggerhead turtles. I compared data between nourished and non-nourished areas and between loggerhead and green turtles. I found, at one season …