Literaturdatenbank
Literaturdatenbank |
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McNeil., J. A., Herman, T. B., & Standing, K. L. (2000). Movement of hatchling blanding’s turtles (emydoidea blandingii) in nova scotia in response to proximity to open water: a manipulative experiment. Chelonian Conservation & Biology, 3, 611–617.
Added by: Sarina Wunderlich (18 Nov 2012 17:43:44 UTC) |
| Resource type: Journal Article BibTeX citation key: McNeil2000 View all bibliographic details  |
Categories: General Keywords: Habitat = habitat, Nordamerika = North America, Schildkröten = turtles + tortoises Creators: Herman, McNeil., Standing Collection: Chelonian Conservation & Biology |
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| Abstract |
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Emydoidea blandingi We conducted a manipulative experiment to determine how the relative proximity of water and terrestrial vegetation at emergence influences the response and movements of neonate Blanding's turtles in Nova Scotia. Thirty-six newly emerged hatchlings from four natural nests were dusted with fluorescent powder and tracked for an average of 3 days after release along one of three parallel transects along the nesting beach: 0.25 m from water, 0.25 m from shrubs at the top of the beach, and average nest level, relative to the upper and lower limits of the beach (ca. 20 m from water, 2.3 m from shrubs). Trails varied considerably in length and tortuosity, with paths from turtles released at the water's edge tending to be less tortuous than those of the other two release groups. Only 8 of 36 turtles entered water over the study. First-day hatchling movements in all release groups showed no directionality, either toward water or in general. The likelihood of entering water was not affected by the proximity of the release location to water. However, the likelihood of entering shrubs significantly increased with increasing proximity of the release location to shrubs. Results from this study support the results of previous work with this population and indicate that hatchling Blanding's turtles in Nova Scotia do not seek open water upon emergence from the nest and water does not appear to serve as an immediate cue in post-emergence orientation.
Added by: Sarina Wunderlich |