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Dispersal of Hatchling Crocodiles (Crocodylus porosus) (Reptilia, Crocodilidae)

William E. Magnusson
Journal of Herpetology
Vol. 13, No. 3 (Jul. 30, 1979), pp. 227-231
DOI: 10.2307/1563313
Stable URL: http://www.jstor.org/stable/1563313
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Dispersal of Hatchling Crocodiles (Crocodylus porosus) (Reptilia, Crocodilidae)
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Abstract

Dispersal of hatchling crocodiles was investigated by mark-recapture. The rate of movement of crocodiles less than 6 months old was unaffected by their age or the salinity of the water in which they were living. Movement was not random and patterns of movement differed between the lower and middle reaches of rivers. Most animals in the middle reaches moved less than one kilometre during the first month though a few moved much larger distances. Approximately equal numbers moved upstream as downstream. In downstream sections most animals moved more than one kilometre in the first month and almost all of these move upstream.

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