| Birchard, G. F., & Packard, G. C. (1997). Cardiac activity in supercooled hatchlings of the painted turtle (chrysemys picta). Journal of Herpetology, 31(1), 166–169. |
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| Added by: Admin 17 Aug 2008 18:54:41 UTC |
Pop. 2.25%
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| Birchard, G. F., & Marcellini, D. (1996). Incubation time in reptilian eggs. Journal of Zoology, London, 240, 621–625. |
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| Added by: Admin 23 Aug 2008 15:32:51 UTC |
Pop. 1.75%
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| Birchard, G. F., Packard, M. J., & Packard, G. C. (1990). Effect of temperature and hydric conditions on blood ph in embryonic snapping turtles (chelydra serpentina). Canadian Journal of Zoology, 68, 190–193. |
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| Added by: Admin 23 Aug 2008 19:57:41 UTC |
Pop. 2.5%
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| Miller, K., & Birchard, G. F. (2005). Influence of body size on shell mass in the ornate box turtle, terrapene ornata. Journal of Herpetology, 39(1), 158–161. |
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| Added by: Admin 14 Aug 2008 20:32:47 UTC |
Pop. 2%
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| Miller, K., Birchard, G. F., Packard, M. J., & Packard, G. C. (1989). Trionyx spiniferus (spiny softshell turtle). fecundity. Herpetological Review, 20, 56. |
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| Last edited by: Beate Pfau 02 Aug 2009 11:17:56 UTC |
Pop. 2.25%
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| Packard, G. C., Packard, M. J., & Birchard, G. F. (2000). Availability of water affects organ growth in prenatal and neonatal snapping turtles (chelydra serpentina). Journal of Comparative Physiology B. Biochemical, Systems, and Environmental Physiology, 170(1), 69–74. |
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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., & Birchard, G. F. (1989). Sexual differentiation and hatching success by painted turtles incubating in different thermal and hydric environments. Herpetologica, 45, 385–392. |
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| Added by: Sarina Wunderlich 13 Oct 2008 21:33:01 UTC |
Pop. 1.75%
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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. 1.75%
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