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Cabasso VJ, Schroeder CR, Stebbins MR. 1956. Isolation of distemper virus from the South American maned wolf (Chrysocyon jubatus). Veterinary Medicine 51(7):330-332. [PDF]

Callard IP, Callard GV, Lance V, Bolaffi JL, Rosset JS. 1978. Testicular regulation in nonmammalian vertebrates. Biology of Reproduction 18:16-43. [PDF]

Callard IP, Lance VA, Salhanick AR, Barad D. 1978. Annual ovarian cycle of Chrysemys picta: correlated changes in plasma steroids and parameters of vitellogenesis. General and Comparative Endocrinology 35(3):245-257.

Calle PP. 1986. Gastric pneumatosis in a red ruffed lemur. Journal of the American Veterinary Medical Association 189(9):1212-1214. [PDF]

Calle PP, Ensley PK . 1985. Abruptio placentae in a lion-tailed macaque. Journal of the American Veterinary Medical Association 187(11):1275-1276. [PDF]

Calle PP, Ensley PK . 1986. What is your diagnosis?: Case 2. Intraluminal filling defects in the proventriculus and ventriculus. Journal of the American Veterinary Medical Association 189(9):1229-1231.

Calle PP, Janssen DL, Kuehler CM, Oosterhuis J. 1989. Gentamicin injection of incubating avian eggs. In: Proceedings of the American Association of Zoo Veterinarians Annual Conference; 1989. p.83-89. [PDF]

Calle PP, Montali RJ, Janssen DL. 1982. Distal extremity necrosis in captive birds. Journal of Wildlife Diseases 18(4):473-479. [PDF]

Calle PP, Morris PJ. 1997. Anesthesia for nondomestic suids. In: Fowler ME, editor. Zoo and wild animal medicine. 4th edition. Philadelphia: W.B. Saunders. p. 639-646.

Calle PP, Robinson PT . 1985. Glucosuria associated with renal calculi in Asian small-clawed otters. Journal of the American Veterinary Medical Association 187(11):1149-1153. [PDF]

Calle PP, Robinson PT . 1985. Glucosuria associated with renal calculi in Asian small-clawed otters, Aonyx cinerea. In: American Association of Zoo Veterinarians Conference Proceedings; 1985 Oct; Scottsdale (AZ). p. 51-52. [PDF]

Campbell S. 1977. The doctors animals go to: saving rare patients who don't sue. San Diego Magazine 29:61-62. [PDF]

Campbell S. 1980. A maddening safari to the world's end: tracking the elusive giant eland in darkest Senegal is no Sunday picnic, even for Zoo's pros. San Diego Magazine :178-183. [PDF]

Campbell S. 1984. Of Condors... the California condor story. One Earth 4:10-11. [PDF]

Campbell S. 1984. Restocking the wilderness with captive-bred animals: the California condor story. In: Martin V, Inglis M, editors. Wilderness: the way ahead. The Park, Forres, Scotland: Findhorn Press; Middleton (WI): Lorian Press. p. 108-113. [PDF]

Campbell S. 1985. How the Golden Monkeys came to San Diego. In: Kruyfhooft C, eidtor. Zoom op Zoo: Antwerp Zoo Focusing on Arts & Science. Antwerp: Royal Zoolocial Society of Antwerp. p. 221-233. [PDF]

Campbell S. 1986. Before we pilot the ark. In: Benirschke K, Diamond J, editors. Primates: the road to self-sustaining populations. New York: Springer-Verlag. p. 981-983. [PDF]

Campbell S. 1986. The Komodo Seven. San Diego Magazine: 64-68. [PDF]

Capua I, Alexander DJ, Rideout BA, Vincent M. 2008. The changing epidemiology of avian influenza. In: Smith G, Kelly AM, editors. Food security in a global economy: veterinary medicine and public health. Philadelphia: University of Pennsylvania Press. p. 101-119.

Carbone L, Mootnick AR, Nadler T, Moisson P, Ryder OA, Roos C, de Jong PJ. 2009. A chromosomal inversion unique to the Northern white-cheeked gibbon. PLoS ONE 4(3):1-7. [PDF]

Carey C, Bruzgul JE, Livo LJ, Walling ML, Kuehl KA, Dixon BR, Pessier AP, Alford RA, Rogers KB. 2006. Experimental exposures of boreal toads (Bufo boreas) to a pathogenic chytrid fungus (Batrachochytrium dendrobatidis). EcoHealth 3:5-21. [PDF]

Carlson AA. 2004. Conserving the African painted dog. Zambian Wildlife 2004(2). [PDF]

Carlson AA, Carlson R, Bercovitch FB. 2003. African wild dog project in Kafue National Park Zambia. CRES 2003 Annual Report. [PDF]

Carlson AA, Isbell LA. 2001. Causes and consequences of single-male and multimale mating in free-ranging patas monkeys, Erythrocebus patas. Animal Behavior 62:1047-1058. doi:10.1006/anbe.2001.1849 [PDF]

Carlson AA, Nicol L, Young AJ, Parlow AF, McNeilly AS. 2003. Radioimmunoassay of prolactin for the meerkat (Suricata suricatta) a cooperatively breeding carnivore. General and Comparative Endocrinology 130:148-156. [PDF]

Carlson AA, Young AJ, Russell AF, Bennett NC, McNeilly AS, Clutton-Brock T. 2004. Hormonal correlates of dominance in meerkats (Suricata suricatta). Hormones and Behavior 46:141-150. doi:10.1016/j.yhbeh.2004.01.009 [PDF]

Carson C. 1986. Otterville. Animal Keeper's Forum 13(5):157-159. [PDF]

Carter SL, Horne BD, Herman DW, Nichols DK, Haas CA, Mitchell JC. 2005. Bacterial pneumonia in free-ranging bog turtles, Glyptemys muhlenbergii, from North Carolina and Virginia. Jornal of the North Carolina Academy of Science 121(4):170-173. [PDF]

Castillo S. 1990. Talking about Sichuan takins (Budorcas taxicolor tibetana) at the San Diego Zoo. In: 16th National Conference of the AAZK; 1990; New Orleans. p. 60-64. [PDF]

Castro AE, Heuschele WP, eds. 1992. Veterinary diagnostic virology: a practitioner's guide. St. Louis: Mosby. 285 p.

Castro AE, Heuschele WP, Schramke ML, Dotson JF. 1985. Ultrastructure of cellular changes in the replication of the alcelaphine herpesvirus-1 of malignant catarrhal fever. American Journal of Veterinary Research 46:1-7. [PDF]

Centerwall WR, Benirschke K . 1975. An animal model for the XXY Klinefelter's syndrome in man: tortoiseshell and calico male cats. American Journal of Veterinary Research 36(9):1275-1280.

Chandra AMS, Papendick RE, Schumacher J, Homer BL, Wollenman P. 1999. Cerebellar herniation in captive lions (Panthera leo). Journal of Veterinary Diagnostic Investigation 11:465-468. [PDF]

Charlton BD, Ellis WAH, McKinnon AJ, Brumm J, Nilsson K, Fitch WT. 2011. Perception of male caller identity in koalas (Phascolarctos cinereus): acoustic analysis and playback experiments. PLoS ONE 6(5):e20329. [PDF]

Charlton BD, Keating JL, Kersey D, Rengui L, Huang Y, Swaisgood RR. 2010. Vocal cues to male androgen levels in giant pandas. Biology Letters 7:71-74. Retrieved from . doi:10.1098/rsbl.2010.0582 [PDF]

Charlton BD, Keating JL, Rengui L, Huang Y, Swaisgood RR. 2010. Female giant panda (Ailuropoda melanoleuca) chirps advertise the caller's fertile phase. Proceedings of the Royal Society B 277:1101-1106. doi:10.1098/rspb.2009.1431 [PDF]

Charlton BD, Swaisgood RR, Zhang Z, Snyder RJ. 2012. Giant pandas attend to androgen-related variation in male bleats. Behavioral Ecology and Sociobiology 66:969-974.doi:10.1007/s00265-012-1345-0 [PDF]

Charpentier MJE, van Horn RC, Altmann J, Alberts SC. 2008. Paternal effects on offspring fitness in a multi-male primate society. Proceedings of the National Academy of Science 105(6):1988-1992. [PDF]

Chase JE, Cooper R. 1968. Dental deposits and their control: an important aspect of the preventative medical program for laboratory primates. Laboratory Animal Care 18(2):186-191. [PDF]

Chase JE, Cooper R. 1969. Saguinus nigricollis -- Physical growth and dental eruption in a small population of captive-born individuals. American Journal of Physical Anthropology 3091):111-116. [PDF]

Chase M. 2011. View from the top. Africa Geographic. 19(7):38-47. [PDF]

Chase MJ, Griffin CR. 2009. Elephants caught in the middle: impacts of war, fences and people on elephant distribution and abundance in the Caprivi Strip, Namibia. African Journal of Ecology 47:223-233. [PDF]

Chase MJ, Griffin CR. 2011. Elephants of south-east Angola in war and peace: their decline, recolonization, and recent status. African Journal of Ecology 49:353-361. [PDF]

Chatfield J, Risser AC Jr. 1984. Preliminary statistical analysis of captive breeding programs. AFA Watchbird 11(6):20-23. [PDF]

Chemnick LG, Houck ML, Ryder OA. 2009. Banking of genetic resources: the Frozen Zoo® at the San Diego Zoo. In: Amato G, DeSalle R, Rosenbaum H, Ryder OA, eds. Conservation Genetics in the Age of Genomics. New York: Columbia University Press. p124-130. [PDF]

Chemnick LG, Kumamoto AT, Ryder OA. 2000. Genetic analyses in support of conservation efforts for the California condor Gymnogyps californianus. International Zoo Yearbook 37:330-339. [PDF]

Chemnick L, Ryder OA. 1994. Cytological and molecular divergence of orangutan subspecies. In: Proceedings of the International Conference on Orangutans: the Neglected Ape; 1994; San Diego. p. 74-78. [PDF]

Chemnick L, Ryder OA. 1997. Determination of orangutan subspecies by karyotyping. In: Sodaro C, editor. Orangutan Species Survival Plan Husbandry Manual. p. 127-128. [PDF]

Chen J-H, Pan D, Groves C, Wang YX, Narushima E, Fitch-Snyder H, Crow P, Thanh VN, Ryder O, Zhang H-W, Fu Y-X, Zhang Y-P. (2006). Molecular phylogeny of Nycticebus inferred from mitochondrial genes. International Journal of Primatology 27(4):1187-1200. doi:10.1007/s10764-006-9032-5 [PDF]

Cheng K, Jones MEB, Jancovich JK, Burchell J, Schrenzel MD, Reavill DR, Imai DM, Urban A, Kirkendall M, Woods LW, Chinchar VG, Pessier AP. 2014. Isolation of a Bohle-like iridovirus from boreal toads housed within a cosmopolitan aquarium collection. Diseases of Aquatic Organisms 111: 139-152. [PDF]

Chew E. 1976. Some problems of landscaping wild animal enclosures. AAZPA Regional Conference Proceedings; 1976. p. 242-245. [PDF]

Chew E. 1980. Man and his food. Newsletter: Southern California Chapter of The Palm Society: 5. [PDF]

Chew E. 1985. Zoological Horticulture. Pacific Horticulture: 28-30. [PDF]

Chiszar D, O'Connell B, Greenlee R, Demeter B, Walsh T, Chiszar J, Moran K, Smith HM. 1985. Duration of strike-induced chemosensory searching in long-term captive rattlesnakes at National Zoo Audubon Zoo and San Diego Zoo. Zoo Biology 4:291-294. [PDF]

Chiszar D, Radcliffe C, Boyd R, Radcliffe A, Yun H, Smith HM, Boyer T, Atkins B, Feiler F. 1986. Trailing behavior in cottonmouths (Agkistrodon piscivorus). Journal of Herpetology 20(2):269-272. [PDF]

Chiszar D, Radcliffe C, Boyer T, Behler J. 1987. Cover-seeking behavior in red spitting cobras (Naja mossambica pallida): effects of tactile cues and darkness. Zoo Biology 6:161-167. [PDF]

Chiszar D, Radcliffe C, Byers T, Stoops R. 1986. Prey capture behavior in nine species of venomous snakes. The Psychological Record 36:433-438. [PDF]

Chiszar D, Radcliffe C, Duvall D. 1983. Strike-induced chemosensory searching by rattlesnakes: the role of envenomation-related chemical cues in the post-strike environment. In: Silverstein RM, Muller Schwarze D, editors. Chemical Signals in Verterbrates III. Pienum Publishing. p. 1-24. [PDF]

Chiszar D, Radcliffe C, Feiler F. 1986. Trailing behavior in Banded rock rattlesnakes (Crotalus lepidus klauberi) and Prairie rattlesnakes (C. viridis viridis). Journal of Comparative Psychology 100(4):368-371. [PDF]

Chiszar D, Radcliffe C, Overstreet R, Poole T, Byers T. 1985. Duration of strike-induced chemosensory searching in cottonmouths (Agkistrodon piscivorus) and a test of the hypothesis that striking prey creates a specific search image. Canadian Journal of Zoology 63:1057-1061. [PDF]

Chiszar D, Smith HM, Radcliffe CW. 1981. Herpetological research conducted in collaboration with zoological parks. In: AAZPA Annual Conference Proceedings; 1981. p. 453-461. [PDF]

Chiszar D, Stimac K, Poole T, Miller T, Radcliffe C, Smith H. 1983. Strike induced chemosensory searching in cobras (Naja naja kauthia, N. mossambica pallida). Zeitschrift fur Tierpsychologie 63:51-62. [PDF]

Chiszar D, Taylor SV, Radcliffe CW, Smith HM, O'Connell B. 1981. Effects of chemical and visual stimuli upon chemosensory searching by garter snakes and rattlesnakes. Journal of Herpetology 15(4):415-424. [PDF]

Cho BR, Kenzy SG. 1975. Virologic and serologic studies of zoo birds for Marek's disease virus infection. Infection and Immunity 11(4):809-814. [PDF]

Cho P, Brown R, Anderson M. (1984). Comparative gross anatomy of ratites. Zoo Biology 3:133-144. [PDF]

Church ME, Gwiazda R, Risebrough RW, Sorenson K, Chamberlain CP, Farry S, Heinrich W, Rideout BA, Smith DR. 2006. Ammunition is the principal source of lead accumulated by California condors re-introduced to the wild. Environmental Science and Technology 40(19):6143-6150.

Cisneros B. 2007. Keeper workshops and committment to conservation: helping to transform a job into a profession. [PDF]

Cisneros B, Sturm P. 2008. White bellied tree pangolin (Maiscus tricuspis): from intubation to independence. In: The bear essentials: introducing bear awareness week and year of the polar bear (2nd Southern California Keeper Exchange); 2008 Apr 21; San Diego (CA). San Diego: AAZK. [PDF]

Clark M, Wallace MP, David C. 2007. Rearing California Condors for release using a modified puppet-rearing technique. In: Mee A, Hall LS, eds. California Condors in the 21st century. Cambridge, MA: Nuttall Ornithological Club and Washington, D.C.: American Ornithologists' Union, Washington, D.C. pp. 213-226.

Clarke AS. 1980. 'Silver spring' monkeys at the San Diego Zoo. Laboratory Primate Newsletter 27(3):10-11. [PDF]

Clarke AS. 1988. Animal foods in the diets of prosimian and new world primates. In: Mitchell G, Erwin J, Liss AR, editors. Comparative primate biology, Part B: behavior cognition and motivation. New York: John Wiley & Sons. p. 133-165. [PDF]

Clarke AS, Czekala NM, Lindburg DG . 1995. Behavioral and adrenocortical responses of male cynomolgus and lion-tailed macaques to social stimulation and group formation. Primates 36(1):41-56. doi:10.1007/BF02381914

Clarke AS, Harvey N, Lindberg DG. 1992. Reproductive coordination in a nonseasonally breeding primate species, Macaca silenus. Ethology 91:46-58. [PDF]

Clarke AS, Harvey NC, Lindburg DG . 1993. Extended postpregnancy estrous cycles in female lion-tailed macaques. American Journal of Primatology 31:275-283. [PDF]

Clarke AS, Lindburg DG . 1993. Behavioral contrasts between male cynomolgus and lion-tailed macaques. American Journal of Primatology 29:49-59. [PDF]

Clarke AS, Mason WA. 1988. Differences among three macaque species in responsiveness to an observer. International Journal of Primatology 9(4):347-364. doi:10.1007/BF02737382 [PDF]

Clarke AS, Mason WA, Moberg GP. 1988. Differential behavioral and adrenocortical responses to stress among three macaques species. American Journal of Primatology 14:37-52. [PDF]

Clarke AS, Mason WA, Moberg GP. 1988. Interspecific contrasts in responses of macaques to transport cage training. Laboratory Animal Science 38(3):305-309. [PDF]

Clauss M, Dierenfeld E, Goff J, Klasing K, � Schlegel M, et al. 2012. IOD in rhinos--nutrition group report: Report from the Nutrition Working Group of the International Workshop on Iron Overload Disorder in Browsing Rhinoceros (February 2011). Journal of Zoo and Wildlife Medicine 43(3 Suppl):S108-S113.

Clifton ID, Ellis WAH, Melzer A, Tucker G. 2007. Water turnover and the northern range of the koala (Phascolarctos cinereus). Australian Mammalogy 29(1):85-88.

Coates LL. 2001. The San Diego Zoo Library "Began with a roar". Science and Technology Libraries 21(3):101-120. doi:10.1300/J122v21n03_07 [PDF]

Coates LL, Tierney KR. 2010. Zoo and wildlife libraries: an international survey. Issues in Science and Technology Librarianship 62. View Full Text

Coburn C. 1985. Exhibit philosophy and process. In: AAZPA Annual Proceedings; 1985. p. 191-193. [PDF]

Coleman LA, Erdman SE, Schrenzel MD, Fox JG. 1998. Immunophenotypic characterization of lymphomas from the mediastinum of young ferrets. American Journal of Veterinary Research 59(1):1281-1286.

Colitz CMH, Renner MS, Manire CA, Doescher B, Schmitt TL, Osborn SD, Croft L, Olds J, Gehring E, Mergl J, Tuttle AD, Sutherland-Smith M, Rudnick JC. 2010. Characterization of progressive keratitis in Otariids. Veterinary Ophthalmology 13(S1):47-53. [PDF]

Collins MT, Oosterhuis JE. 1993. Diagnosis and control of paratuberculosis in exotic hoofed stock. In: American Association of Zoo Veterinarians Annual Conference Proceedings; 1993. p. 386-387.

Collins MT, Teubert DG, Oosterhuis JE. 1993. Paratuberculosis in multiple species at a Wild Animal Park [abstract]. In: 36th Annual Meeting of the American Association of Veterinary Laboratory Diagnosticians; 1993 Oct 24-26; Las Vegas (NV). AAVLD. p. 7. [PDF]

Comer Santos K, Tague C, Alberts AC, Franklin J . 2006. Sea turtle nesting habitat on the US Naval Station, Guantanamo Bay, Cuba: a comparison of habitat suitability index models. Chelonian Conservation and Biology 5(2):175-187. [PDF]

Conga DF, Bowler M, Tantalean M, Montes D, Maués Serra-Freire N, Mayor P. 2013. Intestinal helminths in wild Peruvian red uakari monkeys (Cacajao calvus ucayalii) in the northeastern Peruvian Amazon. Journal of Medical Primatology 43(2):130-133. doi:10.1111/jmp.12092

Conlisk E, Motheral S, Chung R, Wisinski C, Endress B. 2014. Using spatially explicit population models to evaluate habitat restoration priorities for the coastal cactus wren (Campylorhynchus brunneicapillus sandiegensis). Biological Conservation 175: 42-51. doi:10.1016/j.biocon.2014.04.010 [PDF]

Conlon JM, Lance VA . 1994. Generation of [Ala1 Thr6] Bradykinin in the plasma of a snake the reticulated python. General and Comparative Endocrinology 94:273-278. [PDF]

Conrad, KJ, Danoff-Burg JA. 2011. Lobster houses as a sustainable fishing alternative. Consilience: The Journal of Sustainable Development 6(1): 48-62. [PDF]

Coons DM, Thompson KA, Lamberski N, Chigerwe M. 2012. Quantitative indirect ELISA-based method for the measurement of serum IgG in springbok calves. International Journal of Applied Research in Veterinary Medicine 10(2):142-146.

Cooper WE Jr, Alberts A. 1990. Responses to chemical food stimuli by an herbivorous actively foraging lizard Dipsosaurus dorsalis. Herpetologica 46(3):259-266. [PDF]

Cooper WE Jr, Alberts A. 1991. Tongue-flicking and biting in response to chemical food stimuli by an iguanid lizard (Dipsosaurus dorsalis) having sealed vomeronasal ducts: Vomerolfaction may mediate these behavioral responses. Journal of Chemical Ecology 17(1):135-146. [PDF]

Cooper WE Jr, Alberts A. 1993. Postbite elevation in tongue-flicking rate by an iguanian lizard Dipsosaurus dorsalis. Journal of Chemical Ecology 19(10):2329-2336. [PDF]

Cornelius CE, Kaneko JJ . 1962. Erythrocyte life span in the guanaco. Science 137(3531): 673-674. [PDF]

Cornelius CE, Rhode EA, Bishop JA. 1960. Seromucoid levels in normal and hospitalized domestic and exotic animal species. American Journal of Veterinary Research 21(85):1095-1100. [PDF]

Cornell LH, Golden BJ, Osborn KG. 1975. Pseudopersistent urachus in a baby walrus. Journal of the American Veterinary Medical Association 167(7):548-549. [PDF]

Cornell LH, Osborn KG, Antrim JE Jr. 1979. Coccidioidomycosis in a California sea otter (Enhydr lutis). Journal of Wildlife Diseases 15(3):373-378. [PDF]

Cort T, Masuoka J, Lance VA, Saltman P. 1995. Plasma zinc concentrations in snakes and other vertebrates correlate with specific zinc-binding plasma proteins. Journal of Zoology 236(3):513-520. [PDF]

Cosgrove GE. 1980. Amphibian care and diseases. Current Veterinary Therapy 7:616-618. [PDF]

Cosgrove GE. 1976. Insectivores. In: Schroeder C, editor. Zoo medical book, sponsored by Morris Animal Foundation. [PDF]

Cosgrove GE, Jared DW. 1977. Treatment of skin-invading capillarid nematode in a colony of South African clawed frogs (Xenopus laevis). Laboratory Animal Science 27(4):526-527.

Crawford G, Puschner B, Affolter V, Stalis I, Davidson A, Baker T, Tahara J, Jolly A, Ostapak S. 2015. Systemic effects of Leucaena leucocephala ingestion on ringtailed lemurs (Lemur catta) at Berenty Reserve, Madagascar. American Journal of Primatology. 77(6):633-641.

Crofoot M, Mace M, Azua J, MacDonald E, Czekala NM. 2003. Reproductive assessment of the great hornbill (Buceros bicornis) by fecal hormone analysis. Zoo Biology 22:135-145. doi:10.1002/zoo.10083 [PDF]

Cronin JE, Sarich VM, Ryder OA. 1984. Molecular evolution and speciation in the lesser apes. In: Preuschoft H, Chivers D, Brockelman W, Creel N, editors. The lesser apes: evolution and behavioural biology. Edinburgh (UK): Edinburgh University Press. p. 467-645.

Crosby T, Ensley PK, Montali RJ, Hoopes PJ, Kennedy S. 1977. Animal health. Zoogoer 6(4):13-20.

Croyle KE, Durrant BS, Jensen T. 2015. Detection of oocyte perivitelline membrane-bound sperm: a tool for avian collection management. Conservation Physiology 3(1):cou060. doi:doi:10.1093/conphys/cou060 [PDF]

Culliney S, Pejchar L, Switzer R, Ruiz-Gutierrez V. 2012. Seed dispersal by a captive corvid: the role of the `Alala (Corvus hawaiiensis) in shaping Hawaii's plant communities. Ecological Applications 22:1718-1732. doi:10.1890/11-1613.1 [PDF]

Cunningham SJ, Castro I, Jensen T, Potter MA. 2010. Remote touch prey-detection by Madagascar crested ibises Lophotibis cristata urschi. Journal of Avian Biology 41:350-353. [PDF]

Cushman SA, Chase M, Griffin C. 2010. Mapping landscape resistance to identify corridors and barriers for elephant movement in Southern Africa. In: Cushman SA, Huettmann F, editors. Spatial complexity, informatics, and wildlife conservation. New York: Springer. p. 349-367. doi:10.1007/978-4-431-87771-4_19 [PDF]

Cutler B. 1980. Southern stone curlews. AFA Watchbird 7:28-30. [PDF]

Cutler TJ, Mackay RJ, Johnson CM, Papendick R. 1997. Bilateral ureteral tears in a foal. Australian Veterinary Journal 75(6):413-415.

Czekala NM. 1976. Summary of avian sex determination by fecal analysis. In: AAZPA National Conference Proceedings; 1976. p. 60-61. [PDF]

Czekala NM. 1989. Noninvasive monitoring of reproductive function in exotic animals. In: AAZPA Annual Conference Proceedings; 1989 Sep 24-28; Pittsburgh (PA). Wheeling (WV): AAZPA. p. 357-363. [PDF]

Czekala NM. 1990. Monitoring reproductive endocrinology of captive killer whales Orcinus orca. In: 21st Annual IAAAM Conference Proceedings; 1990; Vancouver.

Czekala NM, Benirschke K. 1974. Observations on a twin pregnancy in the African long-tongued fruit bat. Bonn. Zool. Beitr 25:220-230.

Czekala NM, Benirschke K, McClure H, Lasley BL. 1983. Urinary estrogen excretion during pregnancy in the gorilla (Gorilla gorilla), orangutan (Pongo pygmaeus), and the human (Homo sapiens). Biology of Reproduction 28:289-294. [PDF]

Czekala NM, Callison L. 1996. Pregnancy diagnosis in the black rhinoceros (Diceros bicornis) by salivary hormone analysis. Zoo Biology 15: 37-44. [PDF]

Czekala NM, Durrant BS, Callison L, Williams M, Millard S. 1994. Fecal steroid hormone analysis as an indicator of reproductive function in the cheetah. Zoo Biology 13(2):119-128.

Czekala NM, Gallusser S, Meier JE, Lasley BL. 1986. The development and application of an enzyme mmunoassay for urinary estrone conjugates. Zoo Biology 5:1-6. [PDF]

Czekala NM, Hodges JK, Gause GE, Lasley BL. 1980. Annual circulating testosterone levels in captive and free-ranging male armadillos (Dasypus novemcinctus). Journal of Reproduction and Fertility 59:199-204. [PDF]

Czekala NM, Hodges JK, Lasley BL. 1981. Pregnancy monitoring in diverse primate species by estrogen and bioactive luteinizing hormone determinations in small volumes of urine. Journal of Medical Primatology 10:1-15. [PDF]

Czekala NM, Kasman L, Allen J, Oosterhuis J, Lasley BL. 1990. Urinary steroid evaluations to monitor ovarian function in exotic ungulates: VI. Pregnancy detection in exotic equidae. Zoo Biology 9:43-48. [PDF]

Czekala NM, Lance VA, Sutherland-Smith M. 1994. Diurnal urinary corticoid excretion in the human and gorilla. American Journal of Primatology 34:29-34. [PDF]

Czekala NM, Lasley B L. 1977. A technical note on sex determination in monomorphic birds using faecal steroid analysis. International Zoo Yearbook 17:209-211.

Czekala NM, Lindburg D, Durrant BS, Swaisgood R. 1998. The estrogen profile, vaginal cytology, and behavior of a giant panda female during estrus. In: Proceedings of the International Symposium on the Protection of the Giant Panda; 1997; Chengdu, China. p. 111-113.

Czekala NM, Reichard T, Lasley BL . 1991. Assessment of luteal ocmpetiency by urinary hormone evaluation in the captive female gorilla. American Journal of Primatology 24:283-288. [PDF]

Czekala NM, Robbins MM. 2001. Assessment of reproduction and stress through hormone analysis in wild mountain gorillas. In: Robbins MM, Sicotte P, Stewart KJ, editors. Mountain gorillas: 30 years of research at Karisoke. Cambridge: Cambridge University Press. p. 317-340.

Czekala N, Roocroft A, Bates M, Allen J, Lasley BL. 1992. Estrogen metabolism in the Asian elephant (Elaphas maximus). Zoo Biology 11(2):75-80.

Czekala NM, Sicotte P. 2000. Reproductive monitoring of free-ranging female mountain gorillas by urinary hormone analysis. American Journal of Primatology 51:209-15. [PDF]

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