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Pathology of black bass hepatic tissue infected with larvae of the tapeworm Proteocephalm ambloplitis
Author(s) -
Joy J. E.,
Madan E.
Publication year - 1989
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1989.tb03397.x
Subject(s) - biology , micropterus , bass (fish) , larva , parasite hosting , helminths , anatomy , fishery , zoology , centrarchidae , ecology , world wide web , computer science
Plerocercoid larvae of Proteocephalus ambloplitis are common among native basses in a south‐western West Virginia (U.S.A.) reservoir managed by the West Virginia Department of Natural Resources. Liver pathology induced by these larval cestodes in small black basses (i.e. length < 305 mm for largemouth bass Micropterus salmoides ; < 254 mm for spotted bass, M. punctulatus ) is characterized by extensive areas of pressure necrosis with macrophage infiltration adjacent to the parasite tegument, but with little evidence of blood vessel congestion or fibrosis. Parasitized livers of larger bass (i.e. ≥ 305 mm for largemouth, ≥ 254 mm for spotted) showed considerable damage with blood vessel congestion, bile‐stasis and extensive fibrosis, along with degenerating as well as migrating plerocercoids. The prognosis for survival of the smaller hosts, with 16.7 and 8.7 larvae per liver for largemouth and spotted bass, respectively, is questionable.