Literaturdatenbank

WIKINDX Resources

Steen, D. A., Aresco, M. J., Beilke, S. G., Compton, B. W., Condon, E. P., & Dodd, C., et al. (2006). Relative vulnerability of female turtles to road mortality. Animal Conservation, 9(3), 269–273. 
Added by: Admin (14 Aug 2008 20:31:54 UTC)
Resource type: Journal Article
BibTeX citation key: Steen2006
View all bibliographic details
Categories: General
Keywords: Fortpflanzung = reproduction, Habitat = habitat, Nordamerika = North America, Schildkröten = turtles + tortoises
Creators: Aresco, Beilke, Compton, Condon, Dodd, Forrester, Gibbons, Gibbs, Greene, Johnson, Langen, Oldham, Oxier, Saumure, Schueler, Sleeman, Smith, Steen, Tucker
Collection: Animal Conservation
Views: 5/815
Views index: 11%
Popularity index: 2.75%
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 We evaluated this hypothesis by comparing sex ratios from published and unpublished population surveys of turtles conducted on- versus off-roads.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.
Added by: Admin  
wikindx 4.2.2 ©2014 | Total resources: 14930 | Database queries: 69 | Script execution: 0.63102 secs | Style: American Psychological Association (APA) | Bibliography: WIKINDX Master Bibliography