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Interspecific size regularities in tropical felid assemblages.

R A Kiltie1

  • 1Department of Zoology, University of Florida, 32611, Gainesville, FL, USA.

Oecologia
|March 18, 2017
PubMed
Summary
This summary is machine-generated.

This study examined African and Asian felid assemblages, finding that size ratios between species tend to be larger than random, particularly in larger cats. This may indicate niche partitioning based on prey size or other factors.

Keywords:
FelidaeGuildsMammalsSize Ratios

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Area of Science:

  • Ecology
  • Zoology
  • Comparative Biology

Background:

  • Previous research analyzed size relationships in Neotropical cats.
  • Felid assemblages in tropical Africa and Asia present an opportunity for comparative analysis.

Purpose of the Study:

  • To extend the analysis of size relationships to felid assemblages in tropical Africa and Asia.
  • To investigate size ratios and potential niche partitioning among African and Asian cat species.

Main Methods:

  • Jaw length was used as the primary measure of body size, correlating with modal prey size.
  • Felid assemblages were analyzed for size ratios, treating "convergent" species (indistinguishable jaw length) separately and combined.

Main Results:

  • African and Asian felid assemblages show a tendency for larger average size ratios than expected by random assembly, especially among larger species.
  • Extreme evenness in size ratios, as seen in Neotropical cats, was not replicated in these assemblages.
  • Convergent species pairs often exhibit differences in coat coloration (dappled vs. plain), suggesting potential divergence in habitat use or predatory behavior.

Conclusions:

  • Size ratio patterns in African and Asian felids may reflect greater prey size variance or limited niche segregation alternatives for larger species.
  • The significance of size ratio regularity, particularly when merging convergent species, requires further investigation into their specific ecological habits.
  • Coat pattern differences hint at underlying niche differentiation within convergent felid pairs.