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Characterising Ontogenetic Niche Shifts In Nile Crocodile

Characterising-ontogenetic-niche-shifts-in-Nile-crocodile

Nile crocodiles undergo a three to five order of magnitude increase in body size during their lifespan. This shift coincides with a change in resource and habitat use which influences the strength, type and symmetry of interactions with other species. Identifying size-specific crocodile groups displaying similar traits is important for conservation planning. Here, we illustrate how stable carbon (δ13C) and …

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

Diet Of The Nile Crocodile in Okavango Botswana

Although difficult to compare statistically (because of seasons, size classes, and types of analyses used), the ontogenetic trends of crocodilian diet are similar for the different species. Young crocodilians primarily consume insects and arachnids (Platt et al., 2002); these decrease in importance as crocodilians increase in size (Tucker et al., 1996). The intermediate size classes of crocodilians have the most …

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Normal Intestinal Flora Of Wild Nile Crocodiles In The Okavango Delta, Botswana

Normal-Intestinal-Flora-Of-Wild-Nile-Crocodiles-In-The-Okavango-Delta-Botswana

Normal Intestinal Flora Of Wild Nile Crocodiles (Crocodylus niloticus) In The Okavango Delta, Botswana Owing to the difficulty in obtaining biological specimens from wild crocodilians, very little is known about their normal intestinal flora. The intestinal tract flora isolated from wild-caught African dwarf crocodiles (Osteolaemus tetraspis) has been reported. Salmonellae isolated from wild Nile crocodiles from Lake Kariba, and from …

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Gastric Nematodes Of Nile Crocodiles In The Okavango River Botswana

Gastic-nematodes-of-Nile-crocociles

Gastric Nematodes Of Nile Crocodiles, Crocodylus niloticus Laurenti, 1768, In The Okavango River, Botswana A number of gastrointestinal nematodes from crocodilian hosts have been reported in the literature (Baker 1983). Amongst these the ascaridoid nematodes belonging to the subfamily Heterocheilinae and Anisakinae are some of the most prominent species (Sprent 1977, 1978, 1979a, b). Eight of the 11 genera are …

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Estimating Demographics Of The Nile Crocodile In The Panhandle Region Of The Okavango Delta, Botswana

Estimating-demographics-of-the-Nile-crocodile-in-the-panhandle-region-of-the-Okavango-Delta-Botswana

Estimating Demographics Of The Nile Crocodile (Crocodylus niloticus Laurenti) In The Panhandle Region Of The Okavango Delta, Botswana The effective conservation and management of world crocodilians often involves a range of management interventions (for example, strict protection to harvesting), depending on the status of the species, their habitats and the national context within which crocodilians and people interact. The ability …

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Reduced Effective Population Size In An Overexploited Population Of The Nile Crocodile

Reduced-effective-population-size-in-an-overexploited-population-of-the-Nile-crocodile

Reduced Effective Population Size In An Overexploited Population Of The Nile Crocodile (Crocodylus niloticus) Changes in the genetic properties of a population over time is determined by the effective size of the population, Ne, rather than the actual number of living individuals, N (Wright, 1931; Crow and Kimura, 1970). Ne describes the size of an ideal population that has the …

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