The white shark, Carcharodon carcharias, is an apex predator with a circumglobal distribution with limited information available on the movements, environments, and distributions of the juvenile life stage. In an effort to quantify juvenile white shark (JWS) movements and understand their distribution in the Southern California Bight, JWS were captured and fitted with dorsal fin mounted satellite transmitters (SPOT tags: n=20). Nine individuals displayed movements south of the United States border into Baja California, Mexico. A generalized linear model, with a binomial distribution, was used to predict presence of individuals based on several environmental predictors. Individuals were found to select shallow habitats (< 2500 m) close to land (< 50 km) at temperatures between 13 and 26°C. The model predicts seasonal movement with sharks moving to Baja California during winter and inter-annual changes with sharks having a more northerly distribution during years with a higher PDO index.
|Advisor:||Lowe, Christopher G.|
|Commitee:||Clark, Christopher M., Johnson, Darren W., Papastamatiou, Yannis|
|School:||California State University, Long Beach|
|School Location:||United States -- California|
|Source:||MAI 56/02M(E), Masters Abstracts International|
|Subjects:||Biology, Biological oceanography|
|Keywords:||Carcharodon carcharias, Habitat selection, Species distribution, White shark|
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