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Histopathology of bullminnows, Fundulus grandis Baird & Girard, infected with a non‐haemolytic group B Streptococcus sp.
Author(s) -
RASHEED VICTORIA,
LIMSUWAN C.,
PLUMB J.
Publication year - 1985
Publication title -
journal of fish diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 85
eISSN - 1365-2761
pISSN - 0140-7775
DOI - 10.1111/j.1365-2761.1985.tb01188.x
Subject(s) - fundulus , biology , histopathology , streptococcus , vacuolization , hyaline , spleen , group b , necrosis , group a , pathology , microbiology and biotechnology , anatomy , fish <actinopterygii> , medicine , immunology , bacteria , endocrinology , genetics , botany , fishery
. Histopathological changes in bullminnows, Fundulus grandis Baird and Girard, experimentally infected with a non‐haemolytic group B Streptococcus sp. were studied. Following experimental exposure to the Streptococcus sp. approximately 40% of the fish developed exophthalmia, dropsy or petechial haemorrhage along the abdomen. The exophthalmic eye showed haemorrhage with neutrophil infiltration. The liver was oedematous and hepatocytes were atrophied, accompanied by a decrease in glycogen and increases in vacuolization, hyaline droplet degeneration and necrosis. The spleen was congested and cells of the sheathed artery were necrotized.