Case studies of spinal deformities in ornamental koi, Cyprinus carpio L.

Chin, H. N., Loh, R., Hong, Y. C., and Gibson-Kueh, S. (2017) Case studies of spinal deformities in ornamental koi, Cyprinus carpio L. Journal of Fish Diseases, 40 (1). pp. 65-71.

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Abstract

This is a study of vertebral deformities in ornamental koi based on computed radiography and skeletons cleaned by dermestid beetles (Dermestes maculatus). All koi developed gradual onset of swimming abnormalities as adults. Extensive intervertebral osteophyte formation correlated with age of fish and was associated with hindquarter paresis in one koi. Vertebral compression and fusion were the most common spinal deformities occurring at multiple sites, similar to findings in other farmed fish. Site‐specific spinal deformities were thought to develop due to differences in swimming behaviour and rates of vertebral growth. One koi had offspring with spinal deformities. Spinal deformities are significant problems in both European and Australian food fish hatcheries. The heritability of vertebral deformities in farmed fish is reportedly low unless there is concurrent poor husbandry or nutritional deficiencies. The specific aetiologies for vertebral deformities in koi in this study could not be ascertained. Current knowledge on spinal deformities in the better studied European food fish species suggests multifactorial aetiologies. Future research should include prospective longitudinal studies of larger numbers of koi from hatch and consideration of all potential risk factors such as husbandry, nutrition, temperature, photoperiod and genetics.

Item ID: 59117
Item Type: Article (Research - C1)
ISSN: 1365-2761
Keywords: computed radiography, Cyprinus carpio, spinal deformity
Copyright Information: © 2016 John Wiley & Sons Ltd
Funders: Murdoch University Summer Scholarship Program
Date Deposited: 14 Aug 2019 01:31
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0707 Veterinary Sciences > 070703 Veterinary Diagnosis and Diagnostics @ 30%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0707 Veterinary Sciences > 070702 Veterinary Anatomy and Physiology @ 30%
07 AGRICULTURAL AND VETERINARY SCIENCES > 0707 Veterinary Sciences > 070709 Veterinary Pathology @ 40%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 50%
97 EXPANDING KNOWLEDGE > 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences @ 50%
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