Abstract
Preferences of Chelodina expansa, Chelodina longicollis and Emydura macquarii (Testudines : Chelidae)
for different types of aquatic habitat on the Murray River flood plain in south-eastern Australia were
inferred from catch statistics. E. macquarii was the species most often caught in the river itself and river
backwaters, whereas C. longicollis formed the majority of captures from oxbow lakes, anabranches,
ponds, rain pools and a swamp. Relative abundance of E. macquarii was significantly positively
correlated with water body depth, transparency, persistence during dry conditions and flow speed, and
negatively correlated with remoteness from the river. C. longicollis demonstrated the opposite pattern,
and the proportional catch of C. expansa was weakly correlated with environmental variables. The
capacity of C. longicollis for colonising and surviving in small, remote and ephemeral ponds and pools
relates to its ability to aestivate and resist desiccation and its propensity for overland migration.
Subject
Management, Monitoring, Policy and Law,Ecology, Evolution, Behavior and Systematics
Cited by
35 articles.
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