| Obbard, M. E., & Brooks, R. J. (1981). A radio-telemetry and mark-recapture study of activity in the common snapping turtle, chelydra serpentina. Copeia, 1981, 630–637. |
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| Added by: Admin 24 Aug 2008 19:37:43 UTC |
Pop. 1.75%
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| Obbard, M. E., & Brooks, R. J. (1980). Nesting migrations of the snapping turtle (chelydra serpentina). Herpetologica, 36(2), 158–162. |
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| Last edited by: Beate Pfau 03 Jun 2010 11:24:04 UTC |
Pop. 1.75%
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| Obbard, M. E., & Brooks, R. J. (1987). Prediction of the onset of the annual nesting season of the common snapping turtle, chelydra serpentina. Herpetologica, 43 (3), 324–328. |
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| Added by: Sarina Wunderlich 13 Oct 2008 21:32:59 UTC |
Pop. 1.75%
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| Obbard, M. E., & Brooks, R. J. (1981). Fate of overwintered clutches of the common snapping turtle (chelydra serpentina) in algonquin park, ontario. Canadian Field Naturalist, 95, 350–352. |
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| Added by: Admin 22 Feb 2009 11:56:28 UTC |
Pop. 2%
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| Obbard, M. E., & Brooks, R. J. (1979). Factors affecting basking in a northern population of the common snapping turtle, chelydra serpentina. Canadian Journal of Zoology, 57(2), 435–440. |
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| Last edited by: Beate Pfau 15 Aug 2009 16:29:36 UTC |
Pop. 1.75%
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| Okada, Y., Yabe, T., & Oda, S.-I. (2011). Embryonic development of the japanese pond turtle, mauremys japonica (testudines: geoemydidae). Current Herpetology, 30(2), 89–102. |
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| Added by: Admin 29 Jan 2012 12:39:01 UTC |
Pop. 3%
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| Opitz, H., & Mayr, C. , Was macht der halsbandsittich in der thujahecke? Paper presented at NABU Naturschutzfachtagung, Braunschweig. |
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| Added by: Sarina Wunderlich 30 Jun 2012 22:01:41 UTC |
Pop. 5%
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| Packard, G. C., & Packard, M. J. (1988). Water relations of embryonic snapping turtles (chelydra serpentina) exposed to wet or dry environments at different times in incubation. Physiological zoology, 61, 95–106. |
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| Added by: Sarina Wunderlich 13 Oct 2008 21:33:01 UTC |
Pop. 2.25%
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| Packard, G. C., & Packard, M. J. (1984). Coupling of physiology of embryonic turtles to the hydric environment. In R. S. Seymour (Ed.), Respiration and metabolism of embryonic vertebrates (pp. 99–119).Dordrecht. |
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| Added by: Admin 24 Aug 2008 19:37:47 UTC |
Pop. 2.25%
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| Packard, M. J., & Packard, G. C. (1984). Comparative aspects of calcium metabolism in embryonic reptiles and birds. In R. S. Seymour (Ed.), Respiration and metabolism of embryonic vertebrates (pp. 155–179).Dordrecht. |
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| Added by: Admin 24 Aug 2008 19:37:48 UTC |
Pop. 2.25%
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| Packard, M. J., & Packard, G. C. (1989). Environmental modulation of calcium and phosphorus metabolism in embryonic snapping turtles (chelydra serpentina). Journal of Comparative Physiology B. Biochemical, Systems, and Environmental Physiology, 159, 501–508. |
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| Added by: Sarina Wunderlich 13 Oct 2008 21:33:02 UTC |
Pop. 2.25%
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| Packard, G. C., & Packard, M. J. (2002). Wetness of the nest environment influences cardiac development in pre- and post-natal snapping turtles (chelydra serpentina). Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 132(4), 905–912. |
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| Added by: Admin 14 Aug 2008 20:36:26 UTC |
Pop. 2%
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| Packard, G. C., Miller, K., Packard, M. J., & Birchard, G. F. (1999). Environmentally induced variation in body size and condition in hatchling snapping turtles (chelydra serpentina). Canadian Journal of Zoology, 77(2), 278–289. |
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| Added by: Admin 17 Aug 2008 18:17:24 UTC |
Pop. 2%
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| Packard, G. C., Packard, M. J., & Boardman, T. J. (1980). Water relations of pliable-shelled eggs of common snapping turtles (chelydra serpentina). Canadian Journal of Zoology, 58, 1404–1411. |
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| Added by: Admin 24 Aug 2008 19:37:46 UTC |
Pop. 2%
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| Packard, G. C., Packard, M. J., & Boardman, T. J. (1984). Effects of the hydric environment on metabolism of embryonic snapping turtles do not result from altered patterns of sexual differentiation. Copeia, 1984, 547–550. |
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| Added by: Admin 24 Aug 2008 19:37:47 UTC |
Pop. 2%
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| Packard, M. J., Short, T. M., Packard, G. C., & Gorell, T. A. (1984). Sources of calcium for embryonic development in eggs of the snapping turtle chelydra serpentina. Journal of Experimental Zoology, 230, 81–87. |
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| Added by: Admin 24 Aug 2008 19:37:48 UTC |
Pop. 2%
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| Packard, G. C., & Packard, M. J. (1990). Patterns of survival at subzero temperatures by hatchling painted turtles and snapping turtles. Journal of Experimental Zoology, 254, 233–236. |
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| Added by: Sarina Wunderlich 13 Oct 2008 21:33:02 UTC |
Pop. 2%
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| Packard, G. C., Packard, M. J., Miller, K., & Boardman, T. J. (1987). Influence of moisture, temperature, and substrate on snapping turtle eggs and embryos. Ecology, 68, 983–993. |
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| Added by: Sarina Wunderlich 13 Oct 2008 21:33:00 UTC |
Pop. 2.25%
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| Packard, M. J. (1980). Ultrastructural morphology of the shell and shell membranes of eggs of common snapping turtles (chelydra serpentina). Journal of Morphology, 165, 187–204. |
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| Added by: Admin 24 Aug 2008 19:37:46 UTC |
Pop. 2%
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| Packard, G. C., Packard, M. J., & Boardman, T. J. (1984). Influence of hydration of the environment on the pattern of nitrogen excretion by embryonic snapping turtles (chelydra serpentina). Journal of Experimental Biology, 108, 195–204. |
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| Added by: Admin 24 Aug 2008 19:37:48 UTC |
Pop. 2.5%
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