Leucopenia associated with abalone viral ganglioneuritis
Article first published online: 18 JAN 2012
© 2012 The Authors. Australian Veterinary Journal © 2012 Australian Veterinary Association
Australian Veterinary Journal
Volume 90, Issue 1-2, pages 24–28, January/February 2012
How to Cite
Hooper, C., Slocombe, R., Day, R. and Crawford, S. (2012), Leucopenia associated with abalone viral ganglioneuritis. Australian Veterinary Journal, 90: 24–28. doi: 10.1111/j.1751-0813.2011.00877.x
- Issue published online: 18 JAN 2012
- Article first published online: 18 JAN 2012
- (Accepted for publication 1 August 2011)
- abalone viral ganglioneuritis;
- haemocyte counts;
- Haliotis laevigata
Objective To compare microscopic lesion severity with circulating total haemocyte counts (THC) in abalone affected by abalone viral ganglioneuritis (AVG).
Results A herpes-like virus led to severe mortality in a number of Australian abalone farms in 2006. The infection was associated with severe necrotising ganglioneuritis. The microscopic lesions were well demarcated, affecting the neural tissue almost exclusively and were characterised by necrosis and increased cellularity in affected ganglia and nerves. On two farms, the presence or absence of typical AVG pathology was compared with THC. Those abalone with microscopic lesions of AVG had significantly lower haemocyte counts. The mean THC in abalone with no evidence of AVG from both farms was 4.6 × 106/mL (±0.3 SE). The THC in AVG-affected abalone in farm 1 was 2.8 × 106/mL (±0.5 SE) and farm 2 was 0.98 × 106/mL (±0.4 SE).
Conclusions Severe AVG is associated with leucopenia in affected abalone.