Document Detail

Clinical and Pathological Effects of the Polyopisthocotylean Monogenean, Gamacallum macroura in White Bass.
MedLine Citation:
PMID:  23126589     Owner:  NLM     Status:  In-Data-Review    
Abstract An aquaculture research facility experienced high mortality rates in white bass Morone chrysops associated with a monogenean infestation of the gills, but not in striped bass Morone saxatilis in the same facility. All mortalities had pale gills. Monogeneans, identified as Gamacallum macroura (MacCallum and MacCallum 1913) Unnithan 1971, were found on the gills. Pale-gilled and healthy white bass were selected with no particular attention to condition for venipuncture and euthanasia for postmortem examination, including parasite counts from gills. The median packed cell volume (PCV) of fish with gill pallor was 12.5% (range 9-37%) while PVC of fish with more normal color was 30% (27-33%). Association between the PCV and gill pallor score was statistically significant, as was the association between PCV and the number of monogeneans found on the gills of each fish. Median estimated white blood cell count of fish with gill pallor, at 12.05 × 10(3/)μL (range 3.8-24.7), was significantly lower than of apparently healthy fish: 24.7 × 10(3)/μL (17.3-31.5). Histopathology of the gill arches of pale-gilled fish revealed multifocal moderate to severe branchitis, focal areas of dilated hyperplastic lamellae occluded by fibrin, and monogeneans attached to the lamellae. Fish that were apparently healthy had grossly similar histologic lesions, but at lower frequency and severity. Received May 27, 2011; accepted July 12, 2012.
Elsburgh O Clarke; Craig A Harms; J McHugh Law; James R Flowers; Valerie N Williams; Brad D Ring; Andrew S McGinty; Michael Hopper; Craig V Sullivan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of aquatic animal health     Volume:  24     ISSN:  0899-7659     ISO Abbreviation:  J. Aquat. Anim. Health     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-11-06     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9884881     Medline TA:  J Aquat Anim Health     Country:  United States    
Other Details:
Languages:  eng     Pagination:  251-7     Citation Subset:  IM    
a Department of Clinical Sciences, College of Veterinary Medicine , North Carolina State University , 1060 William Moore Drive , Raleigh , North Carolina , 27606 , USA.
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