Guidelines for the field evaluation of desert tortoise health and disease

Journal of Wildlife Diseases

Volumn 37, Issue 3, 2001, Pages 427-450

  Berry, Kristin H ^a   Christopher, Mary M ^b  

^a U S GEOLOGICAL SURVEY   (United States)

^b UNIVERSITY OF CALIFORNIA   (United States)

Author keywords

Chelonian; Desert tortoise; Diagnosis; Disease; Field evaluations; Gopherus agassizii; Health assessments

Indexed keywords

ANIMAL; ANIMAL BEHAVIOR; ANIMAL DISEASE; ANIMAL WELFARE; ARTICLE; BIOLOGICAL MODEL; DESERT CLIMATE; ENVIRONMENTAL MONITORING; ENVIRONMENTAL PROTECTION; EVALUATION; EYE DISEASE; FACTUAL DATABASE; FEMALE; MALE; PHYSIOLOGY; PRACTICE GUIDELINE; RESPIRATORY TRACT DISEASE; SEASON; STANDARD; STRESS; TURTLE; WILD ANIMAL;

ANIMAL WELFARE; ANIMALS; ANIMALS, WILD; BEHAVIOR, ANIMAL; CONSERVATION OF NATURAL RESOURCES; DATABASES, FACTUAL; DESERT CLIMATE; ENVIRONMENTAL MONITORING; EVALUATION STUDIES; EYE DISEASES; FEMALE; GUIDELINES; MALE; MODELS, BIOLOGICAL; RESPIRATORY TRACT DISEASES; SEASONS; STRESS; TURTLES;

EID: 0035404485     PISSN: 00903558     EISSN: None     Source Type: Journal    
DOI: 10.7589/0090-3558-37.3.427     Document Type: Review

References (71)

1. ACUÑA-MESEN, R. A. 1994. Variacion morfometrica y caracteristicas ecologicas del habitat de la tortuga candado Kinosternon scorpioides en Costa Rica (Chelonia, Kinosternidae). Revista Brasileira de Biologia 54: 537-547.
2. AHNE, W. 1993. Viruses of chelonia. Journal of Veterinary Medicine B. 40: 35-45.
3. ALBERTS, A. C., D. C. ROSTAL, AND V. A. LANCE. 1994. Studies on the chemistry and social significance of chin gland secretions in the desert tortoise, Gopherus agassizii. Herpetological Monographs 8: 116-124.
4. AVERILL-MURRAY, R. C. 1998. Effects on growth and survival of tortoises voiding their bladders during handling. In Proceedings of the Desert Tortoise Council Symposium 1998-1999, B. Bartholomew (ed.). The Desert Tortoise Council, Inc., Wrightwood, California, pp. 99-100.
5. BALAZS, G. H. 1985. Impact of ocean debris on marine turtles: Entanglement and ingestion. In Proceedings of the Workshop on the Fate and Impact of Marine Debris, R. S. Shomura and H. O. Yoshida (eds.). U.S. Department of Commerce, National Oceanic and Atmospheric Administration and National Marine Fisheries Service, NOAA-TM-NMFS-SWFC-54, Honolulu, Hawaii, pp. 387-429.
6. BARBOZA, P. S. 1995. Digesta passage and functional anatomy of the digestive tract in the desert tortoise (Xerobates agassizii). Journal of Comparative Physiology B 165: 193-202.
7. _. 1986. Incidence of gunshot deaths in desert tortoises in California. Wildlife Society Bulletin 14: 127-132.
8. BERRY, K. H. 1997a. The Desert Tortoise Recovery Plan: An ambitious effort to conserve biodiversity in the Mojave and Colorado deserts of the United States. In Proceedings: Conservation, Restoration, and Management of Tortoises and Turtles - An International Conference, J. Van Abberna (ed.). Wildlife Conservation Society Turtle Recovery Program and the New York Turtle and Tortoise Society, New York, New York, pp. 430-440.
9. _. 1997b. Demographic consequences of disease in two desert tortoise populations in California, USA. In Proceedings: Conservation, Restoration, and Management of Tortoises and Turtles - An International Conference, J. Van Abbema (ed.). Wildlife Conservation Society Turtle Recovery Program and the New York Turtle and Tortoise Society, New York, New York, pp. 91-97.
10. _, AND P. A. MEDICA. 1995. Desert tortoises in the Mojave and Colorado deserts. In Our Living Resources: A Report to the Nation on the Distribution, Abundance, and Health of U.S. Plants, Animals, and Ecosystems, E. T. LaRoe, G. S. Farris, C. E. Fuckett, P. D. Doran, and M. J. Mac (eds.). U.S. Department of the Interior, National Biological Service, Washington D. C., pp. 135-137.
11. _, AND F. B. TURNER. 1986. Spring activities and habits of juvenile desert tortoises, Gopherus agassizii, in California. Copeia 1986: 1010-1012.
12. BLAKEY, C. S. G., AND J. K. KIRKWOOD. 1995. Body mass to length relationships in chelonia. Veterinary Record 136: 566-568.
13. BOARMAN, W. I., M. L. BEIGEL, G. C. GOODLETT, AND M. SAZAKI. 1998. A passive integrated transponder system for tracking animal movements. Wildlife Society Bulletin 26: 886-991.
14. BONNET, X., AND G. NAULLEAU. 1994. Utilisation d'un indice de condition corporelle (BCI) pour l'etude de la reproduction chez les serpents. Comptes Rendus de'l Academie des Sciences. Paris, Sciences de la vie. Biologie et pathologie animale. 317: 34-41.
15. BOYCE, W., T. YUILL, J. HOMAN, AND D. JESSUP. 1992. A role for veterinarians in wildlife health and conservation biology. Journal of the American Veterinary Medical Association 200: 435-437.
16. BROWN, D. R., B. C. CRENSHAW, G. S. MCLAUGHLIN, I. M. SCHUMACHER, C. E. MCKENNA, P. A. KLEIN, E. R. JACOBSON, AND M. B. BROWN. 1995. Taxonomic analysis of the tortoise mycoplasmas Mycoplasma agassizii and Mycoplasma testudinis by 16S rRNA gene sequence comparison. International Journal of Systematic Bacteriology 45: 348-350.
17. BROWN, M. B., I. M. SCHUMACHER, P. A. KLEIN, K. HARRIS, T. CORRELL, AND E. R. JACOBSON. 1994. Mycoplasma agassizii causes upper respiratory tract disease in the desert tortoise. Infection and Immunity 62: 4580-4586.
18. _, K. H. BERRY, I. M. SCHUMACHER, K. A. NAGY, M. M. CHRISTOPHER, AND P. A. KLEIN. 1999. Seroepidemiology of upper respiratory tract disease in the desert tortoise in California. Journal of Wildlife Diseases 35: 716-727.
19. CALLE, P. P., J. RIVAS, M. MUNOZ, J. THORBJARNARSON, E. S. DIERENFELD, W. HOLMSTROM, W. E. BRASELTON, AND W. B. KARESH. 1994. Health assessment of free-ranging anacondas (Eunectes murinus) in Venezuela. Journal of Zoo and Wildlife Medicine 25: 53-62.
20. CHRISTOPHER, M. M., K. H. BERRY, I. R. WALLIS, K. A. NAGY, B. T. HENEN, AND C. C. PETERSON. 1999. Reference intervals and physiologic alterations in hematologic and biochemical values of free-ranging desert tortoises in the Mojave Desert. Journal of Wildlife Diseases 35: 212-238.
21. CUNNINGHAM, A. A. 1996. Disease risks of wildlife translocations. Conservation Biology 10: 349-353.
22. DICKINSON, V. M., T. DUCK, C. R. SCHWALBE, AND J. L. JARCHOW. 1995. Health studies of free-ranging Mojave Desert tortoises in Utah and Arizona. A Final Report. Arizona Game and Fish Department, Phoenix, Arizona. Research Branch Technical Report No. 21, 70 pp.
23. DUNLAP, K. D. 1995. External and internal influences on indices of physiological stress: II. Seasonal and size-related variations in blood composition in free-living lizards, Sceloporus occidentalis. Journal of Experimental Zoology 272: 85-94.
24. ESCÓS, J. M., C. L. ALADOS, AND J. M. EMLEN. 1995. Fractal structures and fractal functions as disease indicators. Oikos 74: 310-314.
25. FISH AND WILDLIFE SERVICE. 1994. Desert Tortoise (Mojave Population) Recovery Plan. U.S. Department of the Interior, Fish and Wildlife Service, Portland, Oregon, 73 pp. with Appendices.
26. GREENE, G. E. 1983. Ectoparasites of the desert tortoise, Gopherus agassizii, with emphasis on the soft ticks of the genus Ornithodoros (Acari: Argasidae). In Proceedings of the Desert Tortoise Council Symposium, K. Hashagen (ed.). The Desert Tortoise Council, Inc., Long Beach, California, pp. 117-125.
27. _. 1986. Ectoparasites of the desert tortoise, Gopherus agassizii, with emphasis on soft ticks of the genus Ornithodoros (Acari: Argasidae). Thesis for M. S. Degree, California State University, Long Beach, California, 45 pp.
28. GROVER, M. C., AND L. A. DEFALCO. 1995. Desert tortoise (Gopherus agassizii): Status-of-knowledge outline with references. U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station. General Technical Report INT-GTR-316, Washington, D. C., 134 pp.
29. HARDY, R. 1976. The Utah population - A look in the 1970's. In Proceedings of the Desert Tortoise Council Symposium, N. J. Engberg, S. Allan, and R. L. Young (eds.), The Desert Tortoise Council, Long Beach, California, pp. 84-88.
30. HENEN, B. T. 1997. Seasonal and annual energy and water budgets of female desert tortoises (Gopherus agassizii). Ecology 78: 283-296.
31. _, C. C. PETERSON, I. R. WALLIS, K. A. NAGY, AND K. H. BERRY. 1998. Effects of climatic variation on field metabolism and water relations of desert tortoises. Oecologia 117: 365-373.
32. HOMER, B. L., K. H. BERRY, M. M. CHRISTOPHER, M. B. BROWN, AND E. R. JACOBSON. 1998. Pathology of diseases in wild desert tortoises from California. Journal of Wildlife Diseases 34: 508-523.
33. JACKSON, C. G., JR., J. A. TROTTER, T. H. TROTTER, AND M. W. TROTTER. 1976. Accelerated growth rate and early maturity in Gopherus agassizi (Reptilia: Testudines). Herpetologica 32: 139-145.
34. JACKSON, O. F. 1980. Weight and measurement data on tortoises (Testudo graeca and Testudo hermanni) and their relationship to health. Journal of Small Animal Practice 21: 409-416.
35. _. 1987. Signs of ill health. In Handbook on the maintenance of reptiles in captivity, K. R. G. Welch (ed.). Robert E. Krieger Publishing Co., Inc., Malabar, Florida, pp. 26-27.
36. _. 1991. Reptiles, Part One. Chelonians. In Manual of exotic pets, P. H. Beynon and J. E. Cooper (eds.). British Small Animal Veterinary Association, Cheltenham, Gloucestershire, UK pp. 221-243.
37. JACOBSON, E. R. 1993. Implications of infectious diseases for captive propagation and introduction programs of threatened/endangered reptiles. Journal of Zoo and Wildlife Medicine 24: 245-255.
38. _. 1994a. Causes of mortality and disease in tortoises: A review. Journal of Zoo and Wildlife Medicine 25: 2-17.
39. _. 1994b. Veterinary procedures for the acquisition and release of captive-bred herpetofauna. In Captive management and conservation of amphibians and reptiles, J. B. Murphy, K. Adler, and J. T. Collins (eds.). Society for the Study of Amphibians and Reptiles, Ithaca, New York, pp. 109-118.
40. _, J. M. GASKIN, M. B. BROWN, R. K. HARRIS, C. H. GARDINER, J. L. LAPOINTE, H. P. ADAMS, AND C. REGGIARDO. 1991. Chronic upper respiratory tract disease of free ranging desert tortoises (Xerobates agassizii). Journal of Wildlife Diseases 27: 296-316.
41. _, T. J. WRONSKI, J. SCHUMACHER, C. REGGIARDO, AND K. H. BERRY. 1994. Cutaneous dyskeratosis in free-ranging desert tortoises, Gopherus agassizii, in the Colorado Desert of Southern California. Journal of Zoo and Wildlife Medicine 25: 68-81.
42. _, M. B. BROWN, I. M. SCHUMACHER, B. R. COLLINS, R. K. HARRIS, AND P. A. KLEIN. 1995. Mycoplasmosis and the desert tortoise (Gopherus agassizii) in Las Vegas Valley, Nevada. Chelonian Conservation and Biology 1: 279-284.
43. _, M. WEINSTEIN, K. BERRY, B. HARDENBROOK, C. TOMLINSON, AND D. FHEITAS. 1993. Problems with using weight versus carapace length relationships to assess tortoise health. Veterinary Record 132: 222-223.
44. JOHNSON, T., N. LADEHOFF, C. SCHWALBE, AND B. PALMER. 1990. A summary of the literature on the Sonoran Desert population of the desert tortoise. Arizona Game and Fish Department, Phoenix, Arizona, 63 pp.
45. KIRKWOOD, J. K. 1993. Interventions for wildlife health, conservation and welfare. Veterinary Record 132: 235-238.
46. _. 1994. Veterinary education for wildlife conservation, health and welfare. Veterinary Record 135: 148-151.
47. MADER, D. R. 1996. Reptile medicine and surgery. W. B. Saunders Co., Philadelphia, Pennsylvania, 512 pp.
48. MAUTINO, M., AND C. D. PAGE. 1993. Biology and medicine of turtles and tortoises. Veterinary Clinics of North America: Small Animal Practice 23: 1251-1270.
49. MEDICA, P. A., C. L. LYONS, AND F. B. TURNER. 1986. "Tapping": A technique for capturing tortoises. Herpetological Review 17: 15-16.
50. NAGY, K. A., AND P. A. MEDICA. 1986. Physiological ecology of desert tortoises in southern Nevada. Herpetologica 42: 73-92.
51. OETTLE, E. E., Y. G. M. STEYTLER, AND M. C. WILLIAMS. 1990. High mortality in a tortoise colony. South African Journal of Wildlife Research 20: 21-25.
52. PETERSON, C. C. 1996a. Anhomeostasis: Seasonal water and solute relations in two populations of the desert tortoise (Gopherus agassizii) during chronic drought. Physiological Zoology 69: 1324-1358.
53. _. 1996b. Ecological energetics of the desert tortoise (Gopherus agassizii): Effects of rainfall and drought. Ecology 77: 1831-1844.
54. PETNEY, T. N., AND F. AL-YAMAN. 1985. Attachment sites of the tortoise tick Hyalomma aegyptium in relation to tick density and physical condition of the host. The Journal of Parasitology 71: 287-289.
55. RECHAV, Y., AND L. J. FIELDEN. 1995. Seasonal abundance of the tortoise tick Amblyomma marmoreum (Acari: Ixodidae) on the leopard tortoise, Geochelone paradalis. Journal of Medical Entomology 32: 161-165.
56. REIDARSON, T. H., C. A. JANTSCH, AND S. M. GENDRON. 1994. Medical treatment for multiple foreign objects in a hawksbill turtle (Eretmochelys imbricata). Journal of Zoo and Wildlife Medicine 25: 158-160.
57. ROSTAL, D. C., V. A. LANCE, J. S. GRUMBLES, AND A. C. ALBERTS. 1994a. Seasonal reproductive cycle of the desert tortoise (Gopherus agassizii) in the eastern Mojave Desert. Herpetological Monographs 8: 72-82.
58. _, J. S. GRUMBLES, V. A. LANCE, AND J. R. SPOTILA. 1994b. Non-lethal sexing techniques for hatchling and immature desert tortoises (Gopherus agassizii). Herpetological Monographs 8: 83-87.
59. RUBY, D. E., AND H. A. NIBLICK. 1994. A behavioral inventory of the desert tortoise: Development of an ethogram. Herpetological Monographs 8: 88-102.
60. _, L. C. ZIMMERMAN, S. J. BULOVA, C. J. SALICE, M. P. O'CONNOR, AND J. R. SPOTILA. 1994. Behavioral responses and time allocation differences in desert tortoises exposed to environmental stress in semi-natural enclosures. Herpetological Monographs 8: 27-44.
61. SCHUMACHER, I. M., M. B. BROWN, E. R. JACOBSON, B. R. COLLINS, AND P. A. KLEIN. 1993. Detection of antibodies to a pathogenic Mycoplasma in desert tortoises (Gopherus agassizii) with upper respiratory tract disease. Journal of Clinical Microbiology 31: 1454-1460.
62. SONENSHINE, D. E. 1991. Biology of Ticks, Vol. 1. Oxford University Press, New York, New York, 447 pp.
63. _. 1993. Biology of Ticks, Vol. 2. Oxford University Press, New York, New York, 465 pp.
64. SPRATT, D. M. J. 1990. "Jackson's ratio" and the Aldabra giant tortoise (Geochelone gigantea). Veterinary Record 127: 262-263.
65. TURNER, F. B., P. HAYDEN, B. L. BURGE, AND J. B. ROBERSON. 1986. Egg production by the desert tortoise (Gopherus agassizii) in California. Herpetologica 42: 93-104.
66. WALLIS, I. R., B. T. HENEN, AND K. A. NAGY. 1999. Egg size and annual egg production by female desert tortoises (Gopherus agassizii): The importance of food abundance, body size, and date of egg shelling. Journal of Herpetology 33: 394-408.
67. WEST, S. K., AND H. R. TAYLOR. 1990. Reliability of photographs for grading trachoma in field studies. British Journal of Ophthalmology 74: 12-13.
68. WOBESER, G. 1996. Forensic (medico-legal) necropsy of wildlife. Journal of Wildlife Diseases 32: 240-249.
69. WOODBURY, A. M., AND R. HARDY. 1948. Studies of the desert tortoise, Gopherus agassizi. Ecological Monographs 18: 146-200.
70. ZIMMERMAN, L. C., M. P. O'CONNOR, S. J. BULOVA, J. R. SPOTILA, S. J. KEMP, AND C. J. SALICE. 1994. Thermal ecology of desert tortoises in the eastern Mojave Desert: Seasonal patterns of operative and body temperatures, and microhabitat utilization. Herpetological Monographs 8: 45-59.
71. ZUG, G. R. 1991. Age determination in turtles. Society for Study of Amphibians and Reptiles. Herpetological Circular 20: 1-28.