Literaturdatenbank
Literaturdatenbank |
|
 |
|
Reinke, B. A., Burnside, A. W., Fitzpatrick, K., Lawing, M. A., & Polly, D. D. , Comparative analysis of body size, diet, and growth of the painted turtle, chrysemys picta, between eutrophic and oligotrophic waters - abstract. Unpublished paper presented at Program and Abstracts of the Tenth Annual Symposium on the Conservation and Biology of Tortoises and Freshwater Turtles.
Added by: Admin (06 Jan 2014 18:23:07 UTC) |
| Resource type: Conference Paper BibTeX citation key: Reinke2012 View all bibliographic details  |
Categories: General Keywords: Chrysemys picta, Emydidae, Ernährung - nutrition, Habitat - habitat, Nordamerika - North America, Schildkröten - turtles + tortoises Creators: Burnside, Fitzpatrick, Lawing, Polly, Reinke Collection: Program and Abstracts of the Tenth Annual Symposium on the Conservation and Biology of Tortoises and Freshwater Turtles |
Views: 2/451
Views index: 11% Popularity index: 2.75% |
| Abstract |
|
Bodies of water in the United States are increasingly being affected by the anthropogenic introduction of nutrients. Eutrophic waters have high levels of nutrients which spur plant and algal growth and can potentially affect the diets and growth rates of vertebrates. Freshwater turtles living in eutrophic waters may consume more protein due to the high productivity of the environment. Conversely, they may consume more plant matter because of the availability of plant resources and the difficulties of consuming mobile prey in dense macrophytic growth. We captured Chrysemys picta from eutrophic and oligotrophic bodies of water in Sawyer County, Wisconsin, to determine if water quality affects size, diet, and growth rates. We found that the body sizes of C. picta males and juveniles are significantly different by water quality (p=0.028 and p=0.013, respectively), and that the percent carnivory of the diet of females is significantly influenced by water quality (p=0.002). Additionally, we found that the growth rates of mature turtles do not vary significantly with water quality, but the growth rates of juveniles does vary by water quality (p=0.043). We suggest that water quality be assessed in future studies of freshwater turtles and other aquatic vertebrates, as it can have significant impacts on size, diet, and growth.
Added by: Admin |