The Biology of Tiger Sharks, Galeocerdo Cuvier, in Shark Bay, Western Australia: Sex Ratio, Size Distribution, Diet, and Seasonal Changes in Catch Rates

@article{Heithaus2004TheBO,
  title={The Biology of Tiger Sharks, Galeocerdo Cuvier, in Shark Bay, Western Australia: Sex Ratio, Size Distribution, Diet, and Seasonal Changes in Catch Rates},
  author={Michael R. Heithaus},
  journal={Environmental Biology of Fishes},
  year={2004},
  volume={61},
  pages={25-36}
}
  • M. Heithaus
  • Published 1 May 2001
  • Environmental Science
  • Environmental Biology of Fishes
Tiger sharks, Galeocerdo cuvier, are apex predators in a variety of nearshore ecosystems throughout the world. This study investigates the biology of tiger sharks in the shallow seagrass ecosystem of Shark Bay, Western Australia. Tiger sharks (n = 252) were the most commonly caught species (94%) compared to other large sharks. Tiger sharks ranged from 148–407 cm TL. The overall sex ratio was biased towards females (1.8 : 1), but the sex ratio of mature animals (> 300 cm TL) did not differ from… 

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References

SHOWING 1-10 OF 14 REFERENCES
Size, Sex And Geographic Variation in the Diet of the Tiger Shark, Galeocerdo Cuvier, From Western Australian Waters
TLDR
The high level of occurrence of dugongs and turtles in the diet of G. cuvier, relative to their abundance, suggests that shark predation may play an important role in regulating populations of these species.
Biology of Tiger Sharks (Galeocerdo cuvier) caught by the Queensland Shark Meshing Program off Townsville, Australia
TLDR
There was no apparent decrease in the population size of G. cuvier in the Townsville area as a result of the long-term catching of sharks by the protective meshing programme, and the sex ratio of juveniles and adults favoured females, with few adult males being caught.
Ontogenetic dietary shifts and feeding behavior of the tiger shark, Galeocerdo cuvier, in Hawaiian waters
TLDR
Comparisons between the diets of tiger sharks from Hawaii and other locations indicate that ontogenetic shifts are universal in this species and that tiger sharks may be opportunistic feeders that prey heavily on abundant, easy to capture prey.
Movements of tiger sharks (Galeocerdo cuvier) in coastal Hawaiian waters
TLDR
The data suggest that Hawaiian tiger sharks move within large home ranges and that they can efficiently navigate between distant parts of their range, even when this requires crossing open ocean waters.
Distribution and Abundance of Dugongs, Turtles, Dolphins and other Megafauna in Shark Bay, Ningaloo Reef and Exmouth Gulf, Western Australia
TLDR
Examination of strip-transect aerial surveys of Shark Bay, Ningaloo Reef and Exmouth Gulf during the winters of 1989 and 1994 found that expansion of the Shark Bay Marine Park would facilitate the appropriate management of these populations.
Biological observations on sharks caught by sport fishermen off New South Wales
TLDR
Between 1979 and 1982, 523 sharks representing four families and 13 species were examined from sport fishing catches off New South Wales, and, apart from C. falciformis, all of these appear to have restricted breeding seasons.
Impacts of dugong foraging on seagrass habitats: observational and experimental evidence for cultivation grazing
TLDR
The species composition of seagrass meadows can be altered by intensive grazing, which favours rapidly growing, early pioneer species, such as Halophila ovalis, at the expense of slower growing but dominant species such as Zostera capricorni.
Fishes of the Western North Atlantic
FROM the time of its appearance half a century ago, Jordan and Everyman's "Fishes of North and Middle America"has until to-day remained the only comprehensive descriptive account of the fishes of the
Food Web Complexity and Species Diversity
  • R. Paine
  • Environmental Science
    The American Naturalist
  • 1966
It is suggested that local animal species diversity is related to the number of predators in the system and their efficiency in preventing single species from monopolizing some important, limiting,
...
1
2
...