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Journal of Wildlife Diseases, 42(1), 2006, pp. 40-45
© Wildlife Disease Association  2006
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LESIONS ASSOCIATED WITH A NOVEL MYCOPLASMA SP. IN CALIFORNIA SEA LIONS (ZALOPHUS CALIFORNIANUS) UNDERGOING REHABILITATION

Martin Haulena1,7, Frances M. D. Gulland1, Judith A. Lawrence1, Deborah A. Fauquier1, Spencer Jang2, Brian Aldridge3, Terry Spraker4, Linda C. Thomas5, Daniel R. Brown5, Lori Wendland5 and Maureen K. Davidson5,6

1 The Marine Mammal Center, Marin Headlands, 1065 Fort Cronkhite, Sausalito, California 94965, USA
2 Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California (Davis), Davis, California 95616, USA
3 Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California (Davis), Davis, California 95616, USA
4 Colorado State University Diagnostic Laboratory, Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine, Colorado State University, Fort Collins, Colorado 80526, USA
5 Department of Pathobiology, College of Veterinary Medicine, University of Florida, 2015 SW 16th Avenue, PO Box 110880, Gainesville, Florida 32611-0880, USA
7 Corresponding author (email: haulenam{at}tmmc.org)

ABSTRACT:   From July 1999 to November 2001, Mycoplasma sp. was cultured from lesions in 16 California sea lions (Zalophus californianus) undergoing rehabilitation. The Mycoplasma sp. was the likely cause of death of four animals in which it was associated with either pneumonia or polyarthritis. The most common lesion associated with this bacterium was subdermal abscessation, found in 12 animals. Other lesions included intramuscular abscesses, septic arthritis, and lymphadenopathy. Infection was associated with a leukocytosis and left shift in 12 animals. Animals with abscesses improved clinically after surgical lancing, irrigation, and systemic antibiotic therapy. The mycoplasma isolates had a consistent 16S rRNA sequence dissimilar from other Mycoplasma spp. and represent a novel species, Mycoplasma zalophi proposed sp. nov.
  Key words:  Abscess, California sea lion, marine mammal, mycoplasma, otariid, pinniped.

6 Current address: Department of Veterinary Pathobiology, Purdue University School of Veterinary Medicine, 725 Harrison Street, West Lafayette, Indiana 47907-2027, USA






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