Wildlife Research Wildlife Research Society
Ecology, management and conservation in natural and modified habitats
RESEARCH ARTICLE

Permanent marking in an endangered species: physiological response to hot branding in Steller sea lions (Eumetopias jubatus)

Jo-Ann Mellish A B C , Daniel Hennen B , Jamie Thomton B , Lisa Petrauskas A B , Shannon Atkinson A B and Don Calkins B

A School of Fisheries and Ocean Sciences, University of Alaska Fairbanks, Fairbanks, AK 99775, USA.

B Alaska SeaLife Center, 301 Railway Avenue, PO Box 1329, Seward, AK 99664, USA.

C Corresponding author: Email: joann_mellish@alaskasealife.org

Wildlife Research 34(1) 43-47 http://dx.doi.org/10.1071/WR06073
Submitted: 16 June 2006  Accepted: 19 December 2006   Published: 27 February 2007

Abstract

Identification of individual animals is important in order to evaluate age-specific survival rates, onset of sexual maturity and reproductive rates in wildlife populations. Of the various methods available to researchers, hot branding is the most effective, although somewhat controversial, tool available. The physiological effects of hot-iron branding (n = 7) were assessed using temporarily captive juvenile Steller sea lions (Eumetopias jubatus) (n = 22). Sea lions showed statistically significant increases in white blood cell count, platelet levels, globulin and haptoglobin concentration up to two weeks after branding. No significant differences were found in serum cortisol levels. The changes in health parameters we saw after branding were consistent with minor tissue trauma and indistinguishable from baseline levels after 7–8 weeks.


References

Bossart G. D., Reidarson T. H., Dierauf L. A., and Duffield D. A. (2001). Clinical pathology. In ‘Handbook for Marine Mammal Medicine’. (Eds L. A. Dierauf and F. M. D. Gulland.) pp. 383–436. (CRC Press: New York.)

Dalton R. 2005 Animal-rights group sues over ‘disturbing’ work on sea lions. Nature 436 315 DOI

Daoust P.-Y. Fowler G. M. Stobo W. T. 2006 Comparison of the healing process in hot and cold brands applied to harbour seal pups (Phoca vitulina). Wildlife Research 33 361 372 DOI

Dunn O. J. 1964 Multiple contrasts using rank sums. Technometrics 6 241 252 DOI

Jabour-Green J. Bradshaw C. J. A. 2004 The capacity to reason in conservation biology and policy: the southern elephant seal branding controversy. Journal of Nature Conservation 12 25 39 DOI

Jeffries S. J. Brown R. F. Harvey J. T. 1993 Techniques for capturing, handling and marking harbour seals. Aquatic Mammals 19 21 25

King D. P., Aldridge B. M., Kennedy-Stoskopf S., and Stott J. L. (2001). Immunology. In ‘Handbook for Marine Mammal Medicine’. (Eds L. A. Dierauf and F. M. D. Gulland.) pp. 237–252. (CRC Press: New York.)

Kruskal W. H. Wallis W. A. 1952 Use of ranks in one-criterion analysis of variance. Journal of the American Statistical Association 47 583 621
DOI

Lander M. E., Westgate A. J., Bonde R. K., and Murray M. J. (2001). Tagging and tracking. In ‘Handbook for Marine Mammal Medicine’. (Eds L. A. Dierauf and F. M. D. Gulland.) pp. 851–894. (CRC Press: New York.)

Lay D. C., Jr Friend T. H. Grissom K. K. Bowers C. L. Mal M. 1992 a Effects of freeze- or hot-branding on some physiological and behavioral indicators of stress. Applied Animal Behaviour Science 33 137 147 DOI

Lay D. C., Jr Friend T. H. Bowers C. L. Grissom K. K. Jenkins O. C. 1992 b A comparative physiological and behavioral study of freeze and hot-iron branding using dairy cows. Journal of Animal Science 70 1121 1125

Lay D. C., Jr Friend T. H. Randel R. D. Bowers C. L. Grissom K. K. Jenkins O. C. 1992 c Behavioral and physiological effects of freeze and hot-iron branding on crossbred cattle. Journal of Animal Science 70 330 336


Mashburn K. L. Atkinson S. 2004 Evaluation of adrenal function in serum and feces of Steller sea lions (Eumetopias jubatus): influence of molt, gender, sample storage, and age on glucocorticoid metabolism. General and Comparative Endocrinology 136 371 381
DOI

McMahon C. R. Burton H. R. van den Hoff J. Woods R. Bradshaw C. J. A. 2006 Assessing hot-iron and cryo-branding for permanently marking southern elephant seals. Journal of Wildlife Management 70 1484 1489

McMahon C. Van den Hoff J. Burton H. 2005 Handling intensity and the short- and long-term survival of elephant seals: addressing and quantifying research effects on wild animals. Ambio 34 426 429


Mellish J. E. Calkins D. G. Christen D. R. Horning M. Rea L. D. Atkinson S. K. 2006 Temporary captivity as a research tool: comprehensive study of wild pinnipeds under controlled conditions. Aquatic Mammals 32 58 65
DOI

Merrick R. L., and Loughlin T. R., andCalkins D. G. (1996). Hot branding: a technique for long term marking of pinnipeds. NOAA Technical memorandum NMFS-AFSC-68, US Department of Commerce.

NMFS (2002). Environmental assessment on the effects of NMFS permitted scientific research activities on threatened and endangered Steller sea lions. Office of Protected Resources, National Marine Fisheries Service, 1315 East West Highway, Silver Spring, MD 20910.

Petrauskas L. Tuomi P. Atkinson S. 2006 Noninvasive monitoring of stress hormone levels of a female Steller sea lion (Eumetopias jubatus) pup undergoing rehabilitation. Journal of Zoo and Wildlife Medicine 37 75 78

Roletto J. 1993 Hematology and serum chemistry values for clinically healthy and sick pinnipeds. Journal of Zoo and Wildlife Medicine 24 145 157


Schwartzkopf-Genswein K. S. Stookey J. M. DePassille A. M. Rushen J. 1997 a Comparison of hot-iron and freeze branding on cortisol levels and pain sensitivity in beef cattle. Canadian Journal of Animal Science 77 369 374


Schwartzkopf-Genswein K. S. Stookey J. M. Janzen E. D. McKinnon J. 1997 b Effects of branding on weight gain, antibiotic treatment rates and subsequent ease in feedlot cattle. Canadian Journal of Animal Science 77 361 367


Testa J. W. Rothery P. 1992 Effectiveness of various cattle ear tags as markers for Weddell seals. Marine Mammal Science 8 344 353
DOI

Thomton J. D. Mellish J. E. In press Haptoglobin concentrations in free-range and temporarily captive juvenile Steller sea lions. Journal of Wildlife Diseases

Van den Hoff J. Sumner M. D. Field I. C. Bradshaw C. J. A. Burton H. R. McMahon C. R. 2004 Temporal changes in the quality of hot-iron brands on elephant seal (Mirounga leonina) pups. Wildlife Research 31 619 629
DOI

Watts J. M. Stookey J. M. 1999 Effects of restraint and branding on rates and acoustic parameters of vocalization in beef cattle. Applied Animal Behaviour Science 62 125 135 DOI

Wells R. S. (2002). Identification methods. ‘Encyclopedia of Marine Mammals’. (Eds W. F. Perrin, B. Wursig and J. G. M Thewissen.) pp. 601–608. (Academic Press: San Diego, CA.)

Zenteno-Savin T. Castellini M. A. Rea L. D. Fadely B. S. 1997 Plasma haptoglobin levels in threatened Alaskan pinniped populations. Journal of Wildlife Diseases 33 64 71



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