Author
References by this author
Linklater, W.L.; MacDonald, E.A.; Flamand, J.R.B.; Czekala, N.M. 2011. Translocation of rhinoceros associated with distress and poor reproductive functioning. Connect (AZA) March: 7-8, 1 image.
PDF download available
Linklater, W.L.; MacDonald, E.A.; Flamand, J.R.B.; Czekala, N.M. 2010. Declining and low fecal corticoids are associated with distress, not acclimation to stress, during the translocation of African rhinoceros. Animal Conservation 13 (1): 104-111. doi.org/10.1111/j.1469-1795.2009.00308.x
PDF download available
Linklater, W.L.; MacDonald-Madden, E.; Flamand, J.R.B.; Czekala, N.M. 2009. Corticoid concentrations are a misleading metric of animal welfare during management: tests during the translocation of African rhinoceros. Proceedings of the AWMS Annual Conference 2009 (Napier): 89.
PDF download available
MacDonald, E.A.; Linklater, W.L.; Steinman, K.J.; Czekala, N.M. 2008. Rapid colour-change pregnancy test for rhinoceros using faeces. Endangered Species Research 4: 277-281, figs. 1-2, tab. 1.
PDF download available
White, A.; Swaisgood, R.R.; Czekala, N.M. 2007. Differential investment in sons and daughters: do white rhinoceros mothers favor sons?. Journal of Mammalogy 88 (3): 632-638, figs. 1-3.
PDF download available
White, A.M.; Swaisgood, R.R.; Czekala, N.M. 2007. Ranging patterns in white rhinoceros, Ceratotherium simum simum: implications for mating strategies. Animal Behaviour 74 (2): 349-356, fig. 1, tabs. 1-4.
PDF download available
Steinetz, B.G.; Brown, J.L.; Roth, T.L.; Czekala, N.M. 2005. Relaxin concentrations in serum and urine of endangered species: Correlations with physiologice events and use as a marker of pregnancy. Annals of the New York Academy of Sciences 1041: 367-378.
PDF download available
Swaisgood, R.R.; Czekala, N.M.; Patton, M.L. 2002. Reproductive failure in southern white rhinoceros: testing hypotheses with behavioral and hormonal data from captivity and the field. In: Aubery, L.; Kennedy, J.; Gaffney, M.; Patton, L.; Slobig, C.; Mehrdadfar, F.; Rhino Keeper Workshop 2002. Proceedings of the [second] Rhino Keepers’ Workshop 2001, Zoological Society of San Diego May 7-10, 2001. San Diego, Zoological Society. pp. 74-75.
PDF download available
Czekala, N.M. 2002. San Diego Center for Reproduction of Endangered Species (CRES), California, USA. International Zoo News 49 (1): 53-54.
PDF download available
Owen-Smith, R.N.; Czekala, N.M. 2001. Understanding reproductive success: Southern White rhino field study. CRES Report Winter 2001: 1-2, 5 images.
PDF download available
Radcliffe, R.W.; Eyres, A.; Patton, M.L.; Czekala, N.M.; Emslie, R.H. 2001. Ultrasonographic characterization of ovarian events and fetal gestational parameters in two southern black rhinoceros (Diceros bicornis minor) and correlation to fecal progesterone. Theriogenology 55: 1033-1049, figs. 1-6.
PDF download available
Patton, M.L.; Swaisgood, R.R.; Czekala, N.M.; White, A.M.; Fetter, G.A.; Montagne, J.P.; Rieches, R.; Lance, V.A. 1999. Reproductive cycle length and pregnancy in the southern white rhinoceros (Ceratotherium simum simum) as determined by fecal pregnane analysis and observations of mating behavior. Zoo Biology 18 (2): 111-127, figs. 1-4, tables 1-2.
PDF download available
Patton, L.; Czekala, N.M.; Lance, V.A. 1998. Proceedings of a workshop on problems associated with the low rate of reproduction among captive-born female southern white rhinoceros (Ceratotherium simum simum). San Diego, Zoological Society. pp. 1, 1-51.
PDF download available
Roth, T.L.; Patton, L.; Brown, Janine; Czekala, N.M.; Swaisgood, R.R.; Lance, V.A. 1998. The North American experience: female hormonal cycles in southern white rhinoceros. In: Patton, L.; Czekala, N.M.; Lance, V.A. 1998. Proceedings of a workshop on problems associated with the low rate of reproduction among captive-born female southern white rhinoceros (Ceratotherium simum simum). San Diego, Zoological Society. pp. 6-8.
PDF download available
Patton, M.L.; Czekala, N.M.; Schaffer, N.E.; Lance, V.A. 1998. Hormonal manipulations of rhinoceros. In: Patton, L.; Czekala, N.M.; Lance, V.A. 1998. Proceedings of a workshop on problems associated with the low rate of reproduction among captive-born female southern white rhinoceros (Ceratotherium simum simum). San Diego, Zoological Society. pp. 16-21.
PDF download available
PDF download available
Radcliffe, R.W.; Czekala, N.M.; Osofsky, S.A. 1997. Combined serial ultrasonography and fecal progestin analysis for reproductive evaluation of the female white rhinoceros (Ceratotherium simum simum): preliminary results. Zoo Biology 16 (5): 445-456, figs. 1-5.
PDF download available
PDF download available
Czekala, N.M.; Callison, L. 1996. Pregnancy diagnosis in the black rhinoceros ( Diceros bicornis) by salivary hormone analysis. Zoo Biology 15 (1): 33-44, figs. 1-4.
PDF download available
Hagey, L.; Czekala, N.M. 1992. Reproductive research in Sumatran rhinoceros. CRES Report Winter 1992-93: 4, 2 images.
PDF download available
