210 research outputs found
Environmental microbes and its role in health management - Winter school on recent advances in diagnosis and management of diseases in mariculture, 7th to 27th November 2002, Course Manual
Microorganisms are of major important in aquaculture and industrial wastewater
treatment. They reside in the sediment and other substrates, and in the water of
aquaculture facilities, as well as in and on the cultured species. Microorganisms may have
positive or negative effects on the outcome of aquaculture operations. Positive microbial
activities include elimination of toxic materials such as ammonia, nitrite, and hydrogen
sulfide, degradation of uneaten feed, and nutrition of aquatic animals such as shrimp, fish;
production of aqua-farmer. These and other functions make microorganisms key players
in the health and sustainability of aquaculture. Yet, microorganisms are among the least
known and understood elements in aquaculture, Like other areas in aquaculture,
microorganisms require management and Manipulation
Economic importance of marine micro organisms
Bacteria and allied micro-organisms
are of direct economic concern to man
in many ways besides causing diseases
and bringing about the decomposition
of marine a,nimals and commercial
algae . There are many p roblems in
the general economy of the ocean, the
solution of which requires the aid of the
microbiolog ist
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Bioremediation: Eco Technology of Cultured Water Using Efficient Microbes (ECO Microbes)
The emerging role of bacteria in the field of bioremediation eco- technology with countless new genes and
biochemical pathways using antagonistic compounds and other useful molecules has generated new interest in
them. After testing all the physical, chemical and biological means of bioremediation it has been found that for
management of contaminated waters the best option is microbiological treatment which is more efficient
economically and consumes less energy. тАЬIn situтАЭ bioremediation is the cleanup approach where the dissolved
and absorbed contaminants are in contact with microorganisms. The microorganisms act well only when the
waste material helps them to generate energy and nutrients to build up more cells. Lack of biodegradation
capacity of native microorganisms can be overcome by addition of selective substrates during. Insitu bio
remediation or manipulate the native microorganisms for efficient and speedy biodegradation
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рдФрд╖рдз рдФрд░ рдХреАрдбреЗ: рдЬрд▓рдХреГрд╖рд┐ рдореЗрдВ рдкреНрд░рддрд┐рд╕реВрдХреНрд╖реНрдо рдЬреАрд╡реА рдХрд╛рд░рдХреЛрдВ рдХрд╛ рдкреНрд░рднрд╛рд╡
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рдЧреНрд░реАрди рд╣рд╛рдЙрд╕ рдЧреИрд╕реЛрдВ рджреНрд╡рд╛рд░рд╛ рдЬрд▓рд╡рд╛рдпреБ рдкрд░рд┐рд╡рд░реНрддрди рдФрд░ рд╕рд╛рдЧрд░ рдПрд╡рдВ рдордЫреНрд▓реА рд╕реНрд╡рд╛рд╕реНрдереНрдп рдкрд░ рдЗрд╕рдХрд╛ рдкреНрд░рднрд╛рд╡
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Distribution of heterotrophic bacteria around Laccadive Islands
Distribution of heterotrophic bacteria in water samples collected from surface
and 50 m depth in 26 stations around Laccadives in EEZ between 08┬░50' and 12┬░ and
71┬░ and 74┬░ E onboard FORV Sagar Sampada was studied. The size of colonies
isolated from surface water were very small when compared to colonies from 50 m
depth. Green fluorescent Pseudomonas was predominant in some stations. Counts
ranged from 0.81 x 10^/ml to 2.66 x 10* /ml in surface waters and 0.9 x 10^/ml to
2.20 X 10 /ml in 50 m depth. Night samples harboured less counts when compared
to daytime samples. Out of 23 cultures studied Vibrio, Alcaligenes, green fluorescent
Pseudomonas formed the main flora and members of Enterobacteriaceae were
absent. Both gram-positive and gram- negative bacteria were isolated of which 94.6%
were gram-negative rods. Their correlation with environmental parameters are discussed
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рдорд╛рддреНрд╕реНрдпрд┐рдХреА рдкреНрд░рдмрдВрдзрди рдореЗрдВ рдЯреИрдЧрди рдХрд╛ рд╕рд╛рдВрдЧрддреНрдп
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