Document Detail

First descriptions of early- and middle-stage copepodids of Anthosoma crassum (Dichelesthiidae: Siphonostomatoida) and lesions on shortfin makos (Isurus oxyrinchus) infected with A. crassum.
MedLine Citation:
PMID:  12053965     Owner:  NLM     Status:  MEDLINE    
Early- and middle-stage copepodids of Anthosoma crassum (Dichelesthiidae: Siphonostomatoida) and lesions associated with A. crassum infections are described from samples collected from the jaws of shortfin makos captured off southern California. The copepodids did not possess frontal filaments or frontal organs, and they resided in a headstandlike position firmly attached by their embedded antennae. Copepod larvae and small adults were lodged in shallow mucosal ulcers that basally exhibited mild, acute granulocytic stomatitis; large adults were lodged in deep tunnels encompassing the anterior aspects of their bodies. Some lesions contained more than I copepod. Examinations of lesions revealed that A. crassum infection of shortfin makos can result in severe subacute, necrotizing stomatitis with hemorrhage, granulation tissue, and lymphocytic aggregations in the mucosa, and reactive lymphocytic infiltration of the submucosal skeletal muscle. Copepod gut contents consisted of shark erythrocytes, hemosiderin granules, and necrotic host cells. These observations, along with reports of sharks heavily infected with A. crassum, suggest that this copepod may sometimes play a role in the morbidity and mortality of sharks that it infects.
George W Benz; Joanna D Borucinska; Scott A Greenwaldt
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of parasitology     Volume:  88     ISSN:  0022-3395     ISO Abbreviation:  J. Parasitol.     Publication Date:  2002 Feb 
Date Detail:
Created Date:  2002-06-10     Completed Date:  2002-07-12     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  7803124     Medline TA:  J Parasitol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  19-26     Citation Subset:  IM    
Tennessee Aquarium and Southeast Aquatic Research Institute, Chattanooga 37401-2048, USA.
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MeSH Terms
Crustacea / anatomy & histology*,  growth & development*
Ectoparasitic Infestations / veterinary*
Fish Diseases / parasitology*,  pathology
Jaw / parasitology,  pathology
Sharks / parasitology*

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