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Relative vulnerability of female turtles to road mortality

Animal Conservation

By:
, , , , , , , , , , , , , , , , , ,
DOI: 10.1111/j.1469-1795.2006.00032.x

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Abstract

Recent studies suggest that freshwater turtle populations are becoming increasingly male-biased. A hypothesized cause is a greater vulnerability of female turtles to road mortality. We evaluated this hypothesis by comparing sex ratios from published and unpublished population surveys of turtles conducted on- versus off-roads. Among 38 166 turtles from 157 studies reporting sex ratios, we found a consistently larger female fraction in samples from on-roads (61%) than off-roads (41%). We conclude that female turtles are indeed more likely to cross roadways than are males, which may explain recently reported skewed sex ratios near roadways and signify eventual population declines as females are differentially eliminated. ?? 2006 The Zoological Society of London.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Relative vulnerability of female turtles to road mortality
Series title:
Animal Conservation
DOI:
10.1111/j.1469-1795.2006.00032.x
Volume
9
Issue:
3
Year Published:
2006
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Animal Conservation
First page:
269
Last page:
273
Number of Pages:
5