Literaturdatenbank
Literaturdatenbank |
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Carroll, T. E., & Ehrenfeld, D. W. (1978). Intermediate-range homing in the wood turtle, clemmys insculpta. Copeia, 1978(1), 117–126.
Added by: Admin (25 Aug 2008 20:36:53 UTC) Last edited by: Beate Pfau (03 Jun 2010 11:15:10 UTC) |
| Resource type: Journal Article BibTeX citation key: Carroll1978 View all bibliographic details  |
Categories: General Keywords: Clemmys, Emydidae, Glyptemys, Glyptemys insculpta, Habitat = habitat, Nordamerika = North America, Schildkröten = turtles + tortoises, Verhalten = ethology Creators: Carroll, Ehrenfeld Collection: Copeia |
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| Abstract |
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From 1970-1974, 189 subadult and adult wood turtles, Clemmys insculpta, were brought from 52 home sites near Accord, New York, to a common release point. Displacements ranged from 0.35 to 50 km. The turtles were tagged and released; if recaptured, they were brought back to the release point. The turtles were able to return home in a high percentage of cases after displacement to unfamiliar territory. Homing was frequently to the exact site of first capture. This ability was independent of displacement direction, but homing success fell off sharply when displacement distances exceeded 2.0 km. Homing ability was independent of sex or age. There was no evidence of learning (homing score improvement after successive displacements) among turtles that were recaptured three or more times. We characterize this orientation as "intermediate-range homing": the animals were displaced far enough so that the terrain was unfamiliar in most cases, but too close to enable them to use celestial navigation methods. The orientation is probably based on olfactory cues, or on a combination of olfactory and magnetic inputs.
Added by: Admin Last edited by: Beate Pfau |