37 research outputs found
Fish and shelfish diseases in culture systems XI. Furunculosis
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
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
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 IV. Bacterial diseases
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 I. Concept of disease and pathogen
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
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 II. Heterotrophic bacteria and kinds of infections
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)
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: The dispatch of diseased specimens
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
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