Literaturdatenbank
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Williams, T. A., & Christiansen, J. L. (1981). The niches of two sympatric softshell turtles, trionyx muticus and trionyx spiniferus, in iowa. Journal of Herpetology, 15, 303–308.
Added by: Admin (24 Aug 2008 20:04:49 UTC) Last edited by: Beate Pfau (02 Aug 2009 18:45:08 UTC) |
| Resource type: Journal Article BibTeX citation key: Williams1981a View all bibliographic details  |
Categories: General Keywords: Apalone, Apalone mutica, Apalone spinifera, Ernährung = nutrition, Habitat = habitat, Nordamerika = North America, Schildkröten = turtles + tortoises, Trionychidae Creators: Christiansen, Williams Collection: Journal of Herpetology |
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A study of Iowa softshells showed a diet about 25% insects, 36.5% fish (likely carrion), 5.8% small fish (likely caught) & 55% crayfish (Williams, T.A. and J.L. Christiansen. 1981. The niches of two sympatric softshell turtles, Trionyx muticus and Trionyx spiniferus, in Iowa. J. Herpetol. 15:303-308). Plant material was found in 61% of the turtles' stomachs. The percentage of varied foods by volume included 24.2% crayfish, 17.2% large fish, 2.2% small fish, 12.8% plant material, 6.7% Ephemeroptera, 1.9% Hemiptera, 0.6% Diptera, 3.0% Coleoptera, 19.5% unidentified animal material, 6.5% unidentified insect material, 2.0% sand &/or gravel, and minor percentages of other things. Evidently softshells will take advantage of what's available, but mainly animal-based foods.
Added by: Admin Last edited by: Beate Pfau |