A contribution to the etiology of ulcer disease of trout

Transactions of the American Fisheries Society
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Abstract

During the fall of 1947 and the late summer of 1948, outbreaks of ulcer disease occurred among brook trout fingerlings at the Leetown station and other hatcheries. From the ulcers, blood, and kidneys of the diseased trout were isolated bacteria which could be successfully cultivated only on media to which blood or fish‐tissue extract had been added. Some characteristics of these bacteria are described.

In a series of inoculation experiments, brook, brown, and rainbow trout were infected with pure cultures of the isolated bacteria. When the trout used for these tests were free from a latent infection of B. salmonicida, ulcer disease could be reproduced and the bacteria reisolated in pure culture from the inoculated fish. On the basis of the information on hand, it is believed that the isolated bacteria belong to the genus Hemophilus.

Suggested Citation

Snieszko, S.F., and Friddle, S.B., 1950, A contribution to the etiology of ulcer disease of trout: Transactions of the American Fisheries Society, v. 78, no. 1, p. 56-63, https://doi.org/10.1577/1548-8659(1948)78[56:ACTTEO]2.0.CO;2.

Publication type Article
Publication Subtype Journal Article
Title A contribution to the etiology of ulcer disease of trout
Series title Transactions of the American Fisheries Society
DOI 10.1577/1548-8659(1948)78[56:ACTTEO]2.0.CO;2
Volume 78
Issue 1
Year Published 1950
Language English
Publisher American Fisheries Society
Contributing office(s) Leetown Science Center
Description 8 p.
First page 56
Last page 63
Additional publication details