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- Thesis; University of North Florida; UNF; Dissertations (4)
- Academic -- UNF -- Master of Science in Biology; Dissertations (3)
- Academic -- UNF -- Biology (2)
- Academic -- UNF -- Master of Science in Biology (2)
- Dissertations (2)
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- Thesis (2)
- UNF (2)
- University of North Florida (2)
- Academic -- UNF -- Biology; Aquatic Acidification; Crustacean Physiology; Cell Transport Physiology; Calcium Uptake; Membrane Transport; Litopenaeus setiferus -- Calcium uptake; Calcium uptake -- Effect of water acidification on; White river shrimps -- Calcium uptake; Litopenaeus setiferus -- Effect of water acidification on (1)
- Academic -- UNF -- Biology; Tiger Shark; Reproduction; Ultrasonography; Hormones; Seasonality (1)
- Academic -- UNF -- Biology; animal behavior: elasmobranchs; animal welfare; human-animal interactions; zoo research; Jacksonville Zoo and Gardens (1)
- Academic -- UNF -- Biology; shark; nursery; habitat; survey; longline; gill net (1)
- Academic -- UNF -- Master of Science in Coastal Biology; Dissertations (1)
- Anthropogenic (1)
- Endocrinology (1)
- False crawl (1)
- Fisheries (1)
- Jekyll Island (1)
- Loggerhead (1)
- Morphology (1)
- Reproduction (1)
- Sea turtle (1)
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Articles 1 - 6 of 6
Full-Text Articles in Marine Biology
The Effect Of Visitor Density And Interaction On The Behavior Of Four Ray Species (Hypanus Sabina, Hypanus Say, Pseudobatos Lentiginosus, And Rhinoptera Bonasus) Housed In An Aquatic Touch Pool, Aimee Marie Little
UNF Graduate Theses and Dissertations
Human-Animal Interactions (HAI) in zoological institutions are thought to be important in helping visitors to establish a connection with animals and thus making them more likely to contribute to conservation efforts. However, animals can respond to visitor interaction in both negative and positive ways. The growing focus on animal welfare in zoological institutions emphasizes the need for assessing different environmental inputs, including visitor interaction, and how these inputs influence behavioral outputs associated with welfare. A touch pool exhibit presents a novel interactive experience that allows visitors to directly interact with various aquatic species, including elasmobranchs, whose conservation has important implications …
Effects Of Environmental And Anthropogenic Factors On Loggerhead Sea Turtle (Caretta Caretta) False Crawl Rates On Jekyll Island, Ga, Brittany Byrd
Effects Of Environmental And Anthropogenic Factors On Loggerhead Sea Turtle (Caretta Caretta) False Crawl Rates On Jekyll Island, Ga, Brittany Byrd
UNF Graduate Theses and Dissertations
Loggerhead sea turtles (Caretta caretta) are currently listed as “vulnerable” on the IUCN Red List and are experiencing population declines across many parts of their range. These declines are caused by environmental and anthropogenic stressors which impact sea turtle ecology and behavior, including nesting behavior. One nesting behavior sea turtles exhibit is known as “false crawling,” which is when a female sea turtle ascends the beach in an attempt to nest and either abandons the attempt altogether or while in the middle of digging an egg chamber. False crawling, a largely understudied sea turtle behavior, can not only …
Effects Of Aquatic Acidification On Calcium Uptake In White River Shrimp Litopenaeus Setiferus Gills, Maria-Flora Jacobs
Effects Of Aquatic Acidification On Calcium Uptake In White River Shrimp Litopenaeus Setiferus Gills, Maria-Flora Jacobs
UNF Graduate Theses and Dissertations
Previous research regarding aquatic acidification has examined the protonation of the carbonate and does not consider calcium to be a limiting factor. This is the first study to suggest that pH may affect the uptake of calcium in crustacean gills. This project describes ion transport mechanisms present in the cell membranes of white river shrimp Litopenaeus setiferus gill epithelium, and the effects of pH on the uptake of calcium by these means. Partially purified membrane vesicles (PPMV) of shrimp gills were prepared through a homogenization process that has been used previously to define ion transport in crab and lobster gill …
Reproductive Biology Of The Tiger Shark In The Western Atlantic Ocean, Chelsea Shields
Reproductive Biology Of The Tiger Shark In The Western Atlantic Ocean, Chelsea Shields
UNF Graduate Theses and Dissertations
Although tiger sharks are an important apex predator in many ecosystems, little is known about their reproduction. The goal of this study was to determine the size-at-maturity and the reproductive seasonality of tiger sharks in the western Atlantic Ocean. This was achieved using a combination of ultrasonography and measurements of plasma hormone concentrations; in particular, testosterone for males and estradiol and progesterone for females. Steroid hormone concentrations were measured using chemiluminescent assays (CLIA). Maturity was also examined through histology of reproductive organs in females and clasper calcification in males. Females were found to mature between 270 and 310 cm total …
Survey Gear Comparisons And Shark Nursery Habitat Use In Southeast Georgia Estuaries, Jeffrey Cohen Carpenter
Survey Gear Comparisons And Shark Nursery Habitat Use In Southeast Georgia Estuaries, Jeffrey Cohen Carpenter
UNF Graduate Theses and Dissertations
Gill nets and longlines were compared as shark nursery sampling methodologies in inshore waters of Georgia to (1) assess differences in gear selectivity, bias, and stress of capture and (2) determine potential relationships between habitat features and shark distribution and abundance. Gear selectivity varied between gears as a function of both species and life stage resulting in significantly different estimates of species and life stage compositions. Juvenile bonnetheads (Sphyrna tiburo) and young of the year blacktip sharks (Carcharhinus limbatus) experienced significantly higher stress from gill net capture than longline. Major sources of bias are thought to …
The Reproductive Biology Of The Finetooth Shark, Carcharhinus Isodon, In The Northwest Atlantic Ocean, Amanda N. Brown
The Reproductive Biology Of The Finetooth Shark, Carcharhinus Isodon, In The Northwest Atlantic Ocean, Amanda N. Brown
UNF Graduate Theses and Dissertations
Shark fisheries are a multimillion dollar industry in the United States and have significant contributions both recreationally and commercially. In order to maintain this industry, fisheries must be properly managed. An understanding of life history and reproduction is crucial in order to adequately manage shark fisheries. The finetooth shark, Carcharhinus isodon, is a member of the small coastal shark (SCS) fishery complex. It is found in Atlantic waters from South Carolina to Florida and throughout the Gulf of Mexico. This species has recently come under increased fishing pressure and has previously been overfished. New data is needed in order …