Document Detail


Crassicaudosis: a parasitic disease threatening the health and population recovery of large baleen whales.
MedLine Citation:
PMID:  1305859     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This communication briefly reviews knowledge of the systemic disease caused by Crassicauda boopis in blue whales (Balaenoptera musculus), fin whales (B. physalus) and humpback whales (Megaptera novaeangliae). Infections with this giant nematode characteristically incite a chronic inflammatory reaction of the blood vessels which drain the kidneys. In this critical location, the parasite-induced lesion can cause complete vascular occlusion and kidney failure. Whale calves and juveniles typically suffer the heaviest parasite burdens following transplacental infection of the developing whale foetus. There is also probable whale-to-whale transmission post-partum, involving urinary contamination of the environment with C. boopis eggs and larvae. The frequency of the infection can exceed 95%. Haematological findings suggest that systemic pathological effects are typical at the population level. Gradual development of occlusive lesions in the renal veins appears to correlate with a major peak in natural mortality at about one year of age. To date, all findings support the conclusion that premature death caused by C. boopis infection is potentially a major impediment to population recovery of affected whale species. This suggests the interesting possibility of actively encouraging the population recovery of three species of large baleen whales. Such a restoration effort would entail remotely-deployed anthelminthic therapy administered, at sea, to infected whale cows and calves.
Authors:
R H Lambertsen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Review    
Journal Detail:
Title:  Revue scientifique et technique (International Office of Epizootics)     Volume:  11     ISSN:  0253-1933     ISO Abbreviation:  Rev. - Off. Int. Epizoot.     Publication Date:  1992 Dec 
Date Detail:
Created Date:  1993-07-29     Completed Date:  1993-07-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8712301     Medline TA:  Rev Sci Tech     Country:  FRANCE    
Other Details:
Languages:  eng     Pagination:  1131-41     Citation Subset:  IM    
Affiliation:
Ecosystems Technology Transfer, University Science Center, Philadelphia, PA 19104-6068.
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MeSH Terms
Descriptor/Qualifier:
Animals
Atlantic Ocean
Conservation of Natural Resources*
Ecology*
Female
Kidney Failure, Acute / etiology,  veterinary
Male
Renal Veins / parasitology
Spirurida / physiology*
Spirurida Infections / complications,  epidemiology,  pathology,  veterinary*
Venae Cavae / parasitology
Whales / parasitology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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