| Alberts, A. C., Rostal, D. C., & Lance, V. A. (1994). Studies on the chemistry and social significance of chin gland secretions in the desert tortoise, gopherus agassizii. Herpetological Monographs, 8, 116–124. |
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| Added by: Admin 23 Aug 2008 12:12:57 UTC |
Pop. 5%
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| Callard, I. P., Lance, V. A., Salhanick, A. R., & Barad, D. (1978). The annual ovarian cycle of chrysemys picta: correlated changes in plasma steroids and parameters of vitellogenesis. General and Comparative Endocrinology, 35, 245–257. |
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| Added by: Admin 25 Aug 2008 20:36:51 UTC |
Pop. 2.5%
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| Callard, I. P., Callard, G. V., Lance, V. A., & Eccles, S. (1976). Seasonal changes in testicular structure and function and the effects of gonadotropins in the freshwater turtle, chrysemys picta. General and Comparative Endocrinology, 30, 347–356. |
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| Added by: Admin 25 Aug 2008 21:58:00 UTC |
Pop. 2.25%
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| Jessop, T. S., Sumner, J., Lance, V. A., & Limpus, C. J. (2004). Reproduction in shark-attacked sea turtles is supported by stress-reduction mechanisms. Proceedings of the Royal Society B: Biological Sciences, 271(Suppl. 3), S91–S94. |
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| Added by: Admin 13 Sep 2009 10:11:14 UTC |
Pop. 2.5%
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| Kitana, N., Khonsue, W., Won, S. J., Lance, V. A., & Callard, I. P. (2006). Gonadotropin and estrogen responses in freshwater turtle (chrysemys picta) from cape cod, massachusetts. General and Comparative Endocrinology. |
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| Added by: Admin 14 Aug 2008 20:31:53 UTC |
Pop. 3.25%
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| Kohel, K. A., MacKenzie, D. S., Rostal, D. C., Grumbles, J. S., & Lance, V. A. (2001). Seasonality in plasma thyroxine in the desert tortoise, gopherus agassizii. General and Comparative Endocrinology, 121(2), 214–222. |
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| Added by: Admin 17 Aug 2008 17:23:52 UTC |
Pop. 2.25%
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| Lance, V. A., Rostal, D. C., & Grumbles, J. S. , Plasma corticosterone and androstenedione in male and female desert tortoises during the reproductive cycle. Paper presented at 23rd Annual Meeting and Symposium of the Desert Tortoise Council. |
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| Added by: Sarina Wunderlich 24 May 2009 21:32:29 UTC |
Pop. 3.5%
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| Lance, V. A., Grumbles, J. S., & Rostal, D. C. (2001). Sex differences in plasma corticosterone in desert tortoises, gopherus agassizii, during the reproductive cycle. Journal of Experimental Biology, 289(5), 285–289. |
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| Added by: Admin 17 Aug 2008 17:23:52 UTC |
Pop. 2.25%
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| Lance, V. A., & Rostal, D. C. (2001). Stress, corticosterone and testosterone in male desert tortoises. 26th Annual Meeting and Symposium of the Desert Tortoise Council. |
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| Added by: Sarina Wunderlich 24 May 2009 21:32:30 UTC |
Pop. 2.75%
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| Lance, V. A., Place, A. R., Grumbles, J. S., & Rostal, D. C. (2002). Variation in plasma lipids during the reproductive cycle of male and female desert tortoises, gopherus agassizii. Journal of Experimental Zoology, 293(7), 703–711. |
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| Added by: Admin 14 Aug 2008 20:35:29 UTC |
Pop. 2%
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| Lance, V. A. (1992). On the brink: the challenge of conservingthe world's endangered turtles (new technique for sexing juvenile turtles). Zoonoz, 65 (10), 14–15. |
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| Added by: Admin 23 Aug 2008 12:14:14 UTC |
Pop. 2.25%
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| Lance, V. A., & Rostal, D. C. (2002). Can we identify the sex of immature tortoises by fecal steroid assays? 26th Annual Meeting and Symposium of the Desert Tortoise Council. |
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| Added by: Sarina Wunderlich 24 May 2009 21:32:32 UTC |
Pop. 3%
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| Lance, V. A., & Morafka, D. J. (2001). Post natal lecithotroph: a new age class in the ontogeny of reptiles. Herpetological Monographs, 15, 124–134. |
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| Added by: Admin 21 Nov 2009 11:53:16 UTC |
Pop. 2%
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| Lance, V. A., & Rostal, D. C. (2002). The annual reproductive cycle of the male and female desert tortoise: physiology and endocrinology. Chelonian Conservation and Biology, 4(2), 302–312. |
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| Added by: Admin 14 Aug 2008 20:35:29 UTC |
Pop. 2%
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| Lance, V. A. (1997). Sex determination in reptiles: an update. American Zoologist, 37, 54–513. |
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| Added by: Admin 17 Aug 2008 18:54:51 UTC |
Pop. 2%
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| Lance, V. A., Valenzuela, N., & von Hildebrand, P. (1992). A hormonal method to determine the sex of hatchling giant river turtles, podocnemis expansa: application to endangered species research. American Zoologist, 32(16A). |
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| Added by: Admin 23 Aug 2008 12:14:14 UTC |
Pop. 2.5%
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| Lance, V. A., Cort, T., Maslona, J., Lawson, R., & Saltman, P. (1995). Unusually high zinc concentrations in snake plasma, with observations on plasma zinc concentrations in lizards, turtles and alligators. Journal of zoology, 235, 577–585. |
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| Added by: Admin 23 Aug 2008 15:33:03 UTC |
Pop. 2%
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| Morafka, D. J., Spangenberg, K. E., & Lance, V. A. (2001). Neonatology of reptiles. Herpetological Monographs, 14(1), 353–370. |
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| Added by: Admin 17 Aug 2008 18:17:22 UTC |
Pop. 2%
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| Piña, C. I., Lance, V. A., Ferronato, B. O., Guardia, I., Marques, T. S., & Verdade, L. M. (2009). Heavy metal contamination in phrynops geoffroanus (schweigger, 1812) (testudines: chelidae) in a river basin, são paulo, brazil. Bulletin of Environmental Contamination and Toxicology, (epub. ahead of print). |
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| Added by: Admin 21 Nov 2009 11:53:21 UTC |
Pop. 2.75%
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| Rostal, D. C., Wibbels, T., Grumbles, J. S., Lance, V. A., & Spotila, J. R. (2002). Chronology of sex determination in the desert tortoise (gopherus agassizii). Chelonian Conservation and Biology, 4(2), 398–405. |
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| Added by: Admin 14 Aug 2008 20:35:32 UTC |
Pop. 2.25%
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