Geology topics
G. L. Bullock
Publications and source records attributed to G. L. Bullock.
Serology for the microbiological examination of fish and shellfish
No abstract available at this time
Effects of the antimicrobic tiamulin on seven gram-negative bacterial fish pathogens
In vitro and in vivo tests were carried out with tiamulin and gram-negative bacterial pathogens of fish. Determination of minimum inhibitory concentration for 51 strains of seven species of gram-negative bacterial pathogens showed that only strains of Vibrio anguillarum were sensitive at 1.6–6.25 ppm, while the rest of test strains required 25– >100 ppm. Control of infection was not achieved when tiamulin was fed for 14 days at 5 or 50 mg/kg to rainbow trout ( Salmo gairdneri ) experimentally infected with Yersinia ruckeri .
Control of bacterial gill disease with chloramine-T
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Bacterial kidney disease of salmonid fishes caused by Renibacterium salmoninarum
No abstract available at this time
Book Review: Bacterial fish pathogens: Disease in farmed and wild fish
No abstract available.
Studies on vertical transmission of Aeromonas salmonicida
In four attempts to effect vertical transmission of Aeromonas salmonicida, the cause of furunculosis, transmission did not occur. Progeny of both naturally infected and artificially infected brood stock of rainbow trout (Salmo gairdneri) and brook trout (Salvelinus fontinalis) did not develop furunculosis during a 10‐12‐month posthatching observation period.
Future of the NFHRL biologics program
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Tests indicate inability of Aeromonas salmonicida to be transmitted vertically
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Vibriosis in fish
Vvibriosis is a systemic bacterial infection of primarily marine and estuarine fishes, caused by bacteria of the genus Vibrio (Ross et al. 1968, Ghittino et al. 1972); it is a major cause of mortality in maricultur operations. It sometimes also occurs in freshwater species. Vibriosis has been known for centuries; outbreaks were recorded as early as the 1500's along the Italian coast. Terms such as "red pest," "red boil," "red plague," or "saltwater furunculosis" have been applied to vibrio infections, but "vibriosis" is now the specific and standard name of the disease.
Book Review: Diseases of marine animals: Introduction, Pisces; Volume IV, Part I
As stated in Volume 1, Diseases of Marine Animals was originally planned as a contribution to Marine Ecology, Volume III Cultivation.
Effects of five metals on susceptibility of striped bass to Flexibacter columnaris
Exposure of young striped bass Morone saxatilis (weight, 8.5–34 g) to a mixture of arsenic, cadmium, copper, lead, and selenium at 4 and 10 times the average environmental concentrations of 1–3 μg/L protected the fish from experimental infection with Flexibacter columnaris, the causal organism of columnaris disease. In four trials, all striped bass died within 7 d after a 2‐min exposure to 5 × 10 6 F. columnaris cells in untreated water. In contrast, no fish died after a single dayˈs exposure to the metal mixture followed by infection with F. columnaris and a second exposure to the metals for seven more days. When striped bass were exposed 5 d to individual metals, copper protected against infection and cadmium offered marginal protection but was slightly toxic after 2 d exposure. Arsenic increased susceptibility to infection, and lead and selenium were without an apparent effect.
Pathology caused by the bacterium Edwardsiella tarda in striped bass
Edwardsiella tarda was isolated from moribund age‐0 hatchery‐reared striped bass Morone saxatilis for the first time. Pathogenicity was confirmed by contact infection. Characteristic histopathology consisted of epithelial hyperplasia and necrosis associated with the lateral line canals, and abscess formation in the anterior kidney and other internal organs
Quantitative and qualitative studies of gut flora in striped bass from estuarine and coastal marine environments
Examination of the intestinal contents of 130 striped bass ( Morone saxatilis ) collected from the Hudson River and Long Island Sound during May to October 1981 showed that opportunistic fish pathogens—especially Aeromonas hydrophila —predominated in samples from both locations. Other isolates from both groups of striped bass included Vibrio , pseudomonads, flavobacteria, Alcaligenes , and enterics. Small numbers of Micrococcus , Bacillus , Corynebacterium , and Acinetobacter were also isolated. Total numbers of bacteria in the intestines were 100 to 1,000 times higher in striped bass from the Hudson River than in those from Long Island Sound.
Use of erythromycin in reducing vertical transmission of bacterial kidney disease
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