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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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| 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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| Packard, G. C., Packard, M. J., & Boardman, T. J. (1982). An experimental analysis of the water relations of eggs of blanding's turtle (emydoidea blandingii). Zoological Journal of the Linnean Society, 75, 23–34. |
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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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| Packard, G. C., Packard, M. J., & Gutzke, W. H. N. (1985). Influence of hydration of the environment on eggs and embryos of the terrestrial turtle terrapene ornata. Physiological zoology, 58, 564–575. |
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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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| 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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| Packard, M. J., Packard, G. C., & Boardman, T. J. (1982). Structure of eggshells and water relations of reptilian eggs. Herpetologica, 38, 136–155. |
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| Packard, G. C., & Packard, M. J. (1995). A review of the adaptive strategy used by hatchling painted turtles to survive in the cold. Herpetological Review, 26(8), 10–12. |
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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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| Packard, M. J., & Packard, G. C. (1986). Effect of water balance on growth and calcium mobilization of embryonic painted turtles (chrysemys picta). Physiological zoology, 59, 398–405. |
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| Packard, G. C. (1997). Temperature during winter in nests with hatchling painted turtles (chrysemys picta). Herpetologica, 53, 89–95. |
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| Packard, G. C., & Packard, M. J. (1988). The physiological ecology of reptilian eggs and embryos. In C. G. A. S. Gans & R. B. Huey (Eds.), Biology of the Reptilia 16 (pp. 523–605).New York. |
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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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| 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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| Ott, J. A., Mendonça, M. T., Guyer, C., & Michener, W. K. (2000). Seasonal changes in sex and adrenal steroid hormones of gopher tortoises (gopherus polyphemus). General and Comparative Endocrinology, 117(2), 299–312. |
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| de la Ossa Velasquez, J., Vogt, R. C., Schneider, L., & Ossa, A. D. L. (2009). Influencia de la temperatura en el comportamento alimentario de peltocephalus dumerilianus (testudines: podocnmididae). Revista MVZ Cordoba, 14(1), 1587–1593. |
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| Oomen, J. (2002). Sea turtle navigation and migration: a literature review and and an ecological study of the diamondback terrapin (malaclemys terrapin) population in jamaica bay, new york. a master’s thesis in two parts. Unpublished thesis , Stony Brook University, Stony Brook. |
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| Olsson, M., & Shine, R. (2002). Growth to death in lizards. Evolution, 56(9), 1867–1870. |
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| Last edited by: Beate Pfau 13 May 2010 11:38:30 UTC |
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