37 research outputs found

    Fish and shelfish diseases in culture systems XI. Furunculosis

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    Furunculosis is an important systemic bacterial disease found among finfishes both in culture systems and in the wild. This disease was originally described by Emmerich and Weibel in 1894 isolating the causative bacterium from hatchery trout from Germany

    Fish and shellfish diseases in culture systems IX Screening of bacteria for identification

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    Taxonomy is a significant aspect -of study, for a microbiologist, in any application. But, the problems are greater for an aquatic microbiologist as compared to those of a medical microbiologist, because studies have been made in depth in medical microbiology

    Fish and shellfish diseases in culture systems V. Prophylaxis and Disease check up

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    As the nature of the culture ecosystem differs, the applicability of the undermen tioned guidelines may also vary. In the enclosed water culture ecosystem, disease prevent ion is relatively easier than that of the open sea culture ecosystems in cages and pens wherein control over the ecosystem can be only minimal or precticallynil

    Fish and shellfish diseases in culture systems II. Heterotrophic bacteria and kinds of infections

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    The world is facing an acute -shortage of food as terrestrial resources are not adequate to meet the increasing needs of the human populations. So, to augment the food production, a suitable alternative is sea food, f ish being the best and probably a cheaper source of animal protein than egg, milk and meat. But here again the capture fish er ies are not sufficient to satisfy the growing demands of the starving population

    Fish and shellfish diseases in culture systems VIII Isolation of pathogen(s)

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    In disease investigation, isolation of pathogen(s) is an essential aspect of work in order to systematically diagnose microbial cases, to provide rapid remedial measures and to adapt suitable prophylaxi

    Fish and shellfish diseases in culture systems I. Concept of disease and pathogen

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    Just as in land animals or in agricultural crops fishes and shellfishes living in the aquatic environment are susceptible to diseases whenever certain abnormal biological, physological or environmental changes occur

    Fish and shellfish diseases in culture systems III. Defenses against infection

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    When a pathogen infects a host, there may be some initial abnormalities, in the host because of infection, multiplication of .the pathogen, release of microbial toxin and due to the efforts made by the host to defend itself from the pathoge

    Fish and shellfish diseases in culture systems IV. Bacterial diseases

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    All living beings, in their natural surroundings, become susceptible to diseases one time or the other in their life. Fishes and shellfishes are also no exception.Even in the natural conditions, a few of fishes and shellfishes become diseased and most of the cases pass unnoticed possibility due to lack of interest

    Fish and shellfish diseases in culture systems: The dispatch of diseased specimens

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    If adequate care is not exercised, farmed species of fishes and shellfishes become susceptible to the attack of pathogens which may, result in mass mortality. In order to prevent such catastrophies, proper hygiene and prophylaxis is vitally necessar

    Studies on fin fish and shellfish diseases

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    In the present study, fifteen types of diseases occurring in twenty one species of finfishes end shellfishes are documented and the causes studied. All these are being reported tram India for the first tile which adds considerably to our existing knowledge on the subject
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