Diet of the Nile Crocodile (Crocodylus niloticus) in the Okavango Delta, Botswana

@inproceedings{Wallace2008DietOT,
  title={Diet of the Nile Crocodile (Crocodylus niloticus) in the Okavango Delta, Botswana},
  author={Kevin M. Wallace and Alison J. Leslie},
  year={2008}
}
Abstract The analysis of stomach contents can shed light on patterns of prey availability and foraging habits of a predator; however, recent studies have shown the potential bias in dietary studies resulting from differential digestion rates of various prey items. The stomachs of 286 Nile Crocodiles (17–166 cm snout–vent length) were lavaged over a two-year period. Taking prey residence times into account, the contents were examined for prey eaten within 24 h. Crocodylus niloticus has a similar… 
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  • Environmental Science
  • 2014
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References

SHOWING 1-10 OF 26 REFERENCES
The feeding ecology of yearling, juvenile and sub-adult Nile crocodiles, Crocodylus niloticus, in the Okavango Delta, Botswana
TLDR
The stomachs of 286 crocodiles were lavaged over a two year period, and seven species of nematodes were found within the stomachs, four of which represent new geographic records.
The Foods and Feeding Habits of Subadult Crocodylus Porosus Schneider in Northern Australia.
TLDR
Main foods in both seasons were crustaceans, mainly crabs of subfamily Sesarminae and shrimps of genus Macrobrachium, and the only fish eaten regularly was Pseudogobius sp.
Ontogenetic Dietary Partitioning by Crocodylus johnstoni during the Dry Season
TLDR
The diet of C. johnstoni showed ontogenetic shifts as the cranium broadened and once body size exceeded 60 cm SVL, and there were overall increases in prey richness and significant declines in realized dietary niche, dietary breadth, and mean number of prey items per crocodile.
Diet, gastrolith acquisition and initiation of feeding among hatchling Morelet's crocodiles in Belize
TLDR
The diet of hatchling C. moreletii is characterized, the acquisition of gastroliths by neonate crocodilians is poorly documented, and nothing is known concerning the initiation of feeding by wild hatchlings.
FOOD HABITS, ONTOGENETIC DIETARY PARTITIONING AND OBSERVATIONS OF FORAGING BEHAVIOUR OF MORELET'S CROCODILE (CROCODYLUS MORELETII) IN NORTHERN BELIZE
TLDR
It is concluded that the smallest size classes feed largely on insects and arachnids, and large juveniles broadened their diet to include aquatic gastropods, crustaceans, fish and non-fish vertebrates, while hatchlings and small juveniles had the most specialized (least diverse) diet.
Diets of Amazonian Crocodilians
TLDR
There is an inverse relationship between the number of terrestrial invertebrates eaten and thenumber of fish eaten by different size classes of Caiman crocodilus, suggesting that mutually exclusive foraging modes are used for those prey categories.
Factors Affecting Retention Time of Turtle Scutes in Stomachs of American Alligators, Alligator mississippiensis
TLDR
Stomach contents of nine juvenile alligators, fed various percentages of their body mass, were used to compare retention intervals of turtle scutes, and it was found that as meal size increased, the stomach retention interval increased.
Growth Rates of Crocodylus Porosus (Reptilia: Crocodilia) From Arnhem Land, Northern Australia.
TLDR
In C. porosus 80cm SVL has been derived separately, and the two curves intersect in the vicinity of 70 cm SVL, thought to reflect an energetic advantage in feeding on large rather than small prey.
The feeding ecology of two Nile crocodile populations in the Zambezi Valley
A study to determine the impact of Nile Crocodile populations on the ecology of the Lake Kariba, particularly its fish population.
Flooding dynamics in a large low-gradient alluvial fan, the Okavango Delta, Botswana, from analysis and interpretation of a 30-year hydrometric record
Abstract. The Okavango Delta is a flood-pulsed wetland, which supports a large tourism industry and the subsistence of the local population through the provision of ecosystem services. In order to…
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