Document Detail

Experimental infection of yellow stingrays Urobatis jamaicensis with the marine leech Branchellion torpedinis.
MedLine Citation:
PMID:  23047191     Owner:  NLM     Status:  In-Data-Review    
Infestations of elasmobranchs by the marine leech Branchellion torpedinis can be problematic in aquaria and negatively affect host health. To better characterize the extent and pathogenesis of disease, 12 yellow stingrays Urobatis jamaicensis were infected with 1 or 3 leeches for 14 d. Leeches were associated with anorexia, extensive cutaneous ulceration, decreased host packed cell volume (PCV) and serum total solids (TS), and mortality in 3 rays. Average decrease in host PCV positively correlated with ulcer size and parasite:host ratio. Average decrease in host serum TS positively correlated with parasite:host ratio. Blood chemistry and total white blood cell counts revealed no significant trends. Additional necropsy findings included gill and splenic pallor, pericardial edema, perirenal edema, and decreased hepatocellular lipid deposits. Microscopic evaluation of leeches demonstrated host erythrocytes and proteinaceous fluid within parasite intestines, confirming active blood feeding. Results indicate B. torpedinis has the potential to cause significant disease in elasmobranchs, including death in as few as 5 d, and identifies ulcer size and parasite:host ratio as risk factors for disease. Elucidation of this host-parasite interaction helps characterize host response to parasites and facilitate care of parasitized elasmobranchs in aquarium and wild settings.
David P Marancik; Alistair D Dove; Alvin C Camus
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Diseases of aquatic organisms     Volume:  101     ISSN:  0177-5103     ISO Abbreviation:  Dis. Aquat. Org.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8807037     Medline TA:  Dis Aquat Organ     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  51-60     Citation Subset:  IM    
Department of Pathology, The University of Georgia College of Veterinary Medicine, Athens, Georgia 30602, USA.
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