Literaturdatenbank
Literaturdatenbank |
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Budhabhatti, J. (1987). Diet and activity patterns of the common snapping turtle, chelydra serpentina, (lineaus), at chain o'lakes state park, lake county, illinois. Unpublished thesis , Eastern Illinois University.
Added by: Sarina Wunderlich (06 Jul 2014 16:10:33 UTC) |
| Resource type: Thesis/Dissertation BibTeX citation key: anon1987b View all bibliographic details  |
Categories: General Keywords: Emydidae, Ernährung - nutrition, Habitat - habitat, Nordamerika - North America, Schildkröten - turtles + tortoises, Terrapene carolina Creators: Budhabhatti Publisher: Eastern Illinois University |
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| URLs http://thekeep.eiu.edu/theses/712 |
| Abstract |
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Chelydra serpentina An ecological study was conducted on snapping turtles (Chelydra serpentina) at Chain 0' Lakes State Park, Lake County, Illinois. -The study was conducted from March to August 1986. Activity and diet of two populations of snapping turtles at the Fox River site and pentaponds area were studied. Forty-one individuals were marked and released at the study site, nine were radio-tagged and 21 were stomach flushed for diet samples. Home ranges were shared by other snappers of the same and opposite sexes. Aggressive encounters were observed on several occasions but there was no definite evidence of territoriality. Shifts of activity ranges were observed throughout the study. Four turtles had a communal winter dormancy area. Winter dormancy has not previously been reported in Chelydra. Daily feeding activity followed a bimodal pattern with rising temperatures probably accounting for the major cause of a lull during mid afternoon. Snapping turtles appear to be primarily diurnal but occasional nocturnal movements were recorded. Snapping turtle diet consisted of equal amounts of vegetation and animal matter. The most important food items (by volume) were lower plants and fish. There was no apparent difference between the diets of males and females. Feeding was done at the surface (neustophagia) , mid pelagic, and benthic levels.
Added by: Sarina Wunderlich |