Literaturdatenbank
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Kinneary, J. J. (1992). The effect of water salinity on growth and oxygen consumption of snapping turtle (chelydra serpentina) hatchlings from an estuarine habitat. Journal of Herpetology, 26(4), 461–467.
Added by: Admin (13 Sep 2009 10:11:16 UTC) |
| Resource type: Journal Article BibTeX citation key: Kinneary1992 View all bibliographic details  |
Categories: General Keywords: Chelydra, Chelydra serpentina, Chelydridae, Habitat = habitat, Nordamerika = North America, Physiologie = physiology, Schildkröten = turtles + tortoises, Zeitigung = incubation Creators: Kinneary Collection: Journal of Herpetology |
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| Abstract |
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Chelydra serpentina Snapping turtle eggs were collected from contiguous brackish and lower brackish/fresh water habitats within a Long Island, New York estuary. Eggs were also collected from a remote inland fresh water site. Hatchling snapping turtles were exposed to fresh water, 10, 20, 25 and 40% seawater (100% seawater = 35 ppt) for periods varying from 5 to 20 weeks. There were no significant differences in terms of salinity in growth optima between hatchling turtles obtained from contiguous habitats of differing osmotic stress. The estuarine group of turtles as a whole grew significantly better in brackish water (up to 25% seawater) as compared to fresh water. Comparison with hatchlings obtained from an inland fresh water site suggests that observed differences in growth in the estuarine group are due primarily to a marked inability to grow in fresh water rather than enhanced growth in saline water. Salinity did not affect the rate of oxygen consumption of the turtles.
Added by: Admin |