Listeria in Aquatic Animals

Botzler, Richard G.; Wetzler, T. F.; Cowan, A. B.

doi:10.7589/0090-3558-9.2.163

Cited by 12 publications

(7 citation statements)

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“…Studies to date suggest that Listeria species occur widely in the environment. Weis & Seeliger (1975) isolated it from soil, plant and animal samples, and Botzler, Wetzler & Cowan (1973) isolated these organisms from a variety of aquatic animals in three ponds in Michigan. These authors did not report Listeria in fish.…”

Section: Discussionmentioning

confidence: 99%

A study of bacteria present within unfertilized salmon eggs at the time of spawning and their possible relation to early lifestage disease

Sauter

Williams

Meyer

et al. 1987

Journal of Fish Diseases

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The eggs of 30 female chinook salmon, Oncorhynchus tshawytscha (Walbaum), were collected at spawning. Some eggs from each fish were collected for bacteriologic study. Two salmon produced eggs judged to be of poor quality which were not used. The remaining 28 of the 30 groups of eggs were fertilized from a single sperm pool and the eggs incubated in separate groups. Mortality data on the developing salmon were recorded regularly through the twelfth week on feed. Unfertihzed eggs from each group were surface-disinfected with an iodine solution, then crushed and subjected to a culture procedure designed to permit growth of as many bacterial types as possible. Bacteria were cultured and identified, and a comparison made of the types of organisms present in eggs from groups which later incurred high or low mortalities. Bacteria were recovered from both groups of salmon eggs. Although no single organism could be identified as a cause of increased mortality, the more frequent occurrence in the eggs of the 'high mortality' group of species of Vibrio, Listeria, Corynebacterium and Staphylococcus suggests that these bacteria may play a role. It is suggested that the cause of so-called early Ufestage disease of salmon is muUifactorial.

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Section: Discussionmentioning

confidence: 99%

A study of bacteria present within unfertilized salmon eggs at the time of spawning and their possible relation to early lifestage disease

Sauter

Williams

Meyer

et al. 1987

Journal of Fish Diseases

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“…This will be followed by a brief overview of naturally occurring clinical listeriosis in humans and different animal species and, after that, a discussion of the extensive literature on animal models of listeriosis. Since many questions about the pathogenic potential of L. monocytogenes in reptiles, amphibians, fish, crustaceans and other invertebrate species remain and the relevance of these models for human disease therefore appears questionable [22,23], these animals will not be explicitly discussed here even though they have occasionally been used as models of L. monocytogenes infection. Studies of listeriosis differ in host species and life stage, in whether they evaluate clinical symptoms or colonization of internal organs, and considerable experimental differences complicate comparison across studies even further.…”

Section: Challenges In the Study Of Listeriosismentioning

confidence: 99%

Animal models of listeriosis: a comparative review of the current state of the art and lessons learned

Hoelzer

Pouillot

Dennis

2012

Vet Res

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Listeriosis is a leading cause of hospitalization and death due to foodborne illness in the industrialized world. Animal models have played fundamental roles in elucidating the pathophysiology and immunology of listeriosis, and will almost certainly continue to be integral components of the research on listeriosis. Data derived from animal studies helped for example characterize the importance of cell-mediated immunity in controlling infection, allowed evaluation of chemotherapeutic treatments for listeriosis, and contributed to quantitative assessments of the public health risk associated with L. monocytogenes contaminated food commodities. Nonetheless, a number of pivotal questions remain unresolved, including dose-response relationships, which represent essential components of risk assessments. Newly emerging data about species-specific differences have recently raised concern about the validity of most traditional animal models of listeriosis. However, considerable uncertainty about the best choice of animal model remains. Here we review the available data on traditional and potential new animal models to summarize currently recognized strengths and limitations of each model. This knowledge is instrumental for devising future studies and for interpreting current data. We deliberately chose a historical, comparative and cross-disciplinary approach, striving to reveal clues that may help predict the ultimate value of each animal model in spite of incomplete data.

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“…Water is essential for all animals, and fish are a true indicator species for monitoring the health of the environment, given the great diversity of fish species, which have adapted to nearly every niche on earth, from deserts to the Antarctic. These concepts build on foundational science, clinical teachings and population medicine to expand aquatic animal health knowledge by, for example: − identifying pathogens traditionally considered terrestrial pathogens, such as Listeria in snails and leopard frogs (3) − understanding the epidemiological threats and economic consequences that iridoviruses may pose for the ornamental fish trade and wild populations (26) − detecting antibiotics and antibiotic-resistant pathogens in streams and groundwater (9) − identifying new disease outbreaks, such as mycobacteriosis in wild striped sea bass (Morone saxatilis) from Chesapeake Bay (20).…”

Section: Eco-system Health and Conservation Medicinementioning

confidence: 99%

Essential veterinary education in fish health and disease: a gobal perspective

Weber

Blanc

Hedrick³

2009

Rev. Sci. Tech. OIE

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Fish are the largest class of vertebrates, with over 25,000 estimated species and subspecies. Fish have evolved unique anatomical and physiological adaptations, when compared to terrestrial vertebrates, for life in a range of aquatic environments. Interest in aquatic animal health has been recorded in Eastern and Western cultures for more than 2,000 years. In recent times, there has been an increase in the numbers of aquatic animals being used as companion animals or pets, for food and in laboratories, as well as in restoration and conservation programmes. There has also been a corresponding increase in concern for their health and welfare. Moral and ethical considerations require the optimisation of husbandry practices and advances in aquatic animal health for these animals. As with other vertebrates, veterinarians are best equipped to meet the challenges for aquatic animal health from clinical, scientific and legal perspectives. To accomplish this goal, veterinary education must incorporate aquatic animal health throughout graduate curricula, create advanced postgraduate training opportunities, and support a continuum of professional development opportunities for all levels of aquatic animal health expertise.

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Listeria in Aquatic Animals

Cited by 12 publications

References 0 publications

A study of bacteria present within unfertilized salmon eggs at the time of spawning and their possible relation to early lifestage disease

A study of bacteria present within unfertilized salmon eggs at the time of spawning and their possible relation to early lifestage disease

Animal models of listeriosis: a comparative review of the current state of the art and lessons learned

Essential veterinary education in fish health and disease: a gobal perspective

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