Literaturdatenbank
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DeRosa, C. T., & Taylor, D. H. (1982). A comparison of compass orientation mechanisms in three turtles (trionyx spinifer, chrysemys picta and terrapene carolina). Copeia, 1982(2), 394–399.
Added by: Admin (24 Aug 2008 18:46:20 UTC) |
| Resource type: Journal Article BibTeX citation key: DeRosa1982 View all bibliographic details  |
Categories: General Keywords: Apalone, Apalone spinifera, Chrysemys, Chrysemys picta, Emydidae, Schildkröten = turtles + tortoises, Terrapene, Terrapene carolina, Trionychidae, Trionyx, Verhalten = ethology Creators: DeRosa, Taylor Collection: Copeia |
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| Abstract |
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Trionyx Apalone spinifera Chrysemys picta Terrapene carolina Three species of adult turtles (Trionyx spinifer, Chrysemys picta and Terrapene carolina) were tested in various situations to establish their relative compass orientation abilities. The animals showed a significant orientation in a trained direction. Their responses were shown to be dependent upon an internal biological clock and time-dependent celestial cues. C. picta, T. carolina and T. spinifer possess Type II (compass orientation) ability. This ability is contingent upon time-dependent celestial cues and an internal biological clock synchronized with local time. The motivation to use these abilities as opposed to positive geotactic cues appears to be greater for C. picta and T. carolina than for T. spinifer.
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