Haseeb, M; Dr.Bright Singh,I S(Cochin University Of Science And Technology, November , 2012)
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Abstract:
Aquaculture is one of the fastest growing food sectors in the world.
Amongst the various branches of aquaculture, shrimp culture has expanded
rapidly across the globe because of its faster growth rate, short culture period,
high export value and demand in the International market. Indian shrimp
farming has experienced phenomenal development over the decades due to its
excellent commercial viability. Farmers have adopted a number of innovative
technologies to improve the production and to maximize the returns per unit
area. The culture methods adopted can be classified in to extensive, modified
extensive and semi intensive based on the management strategies adopted in
terms of pond size, stocking density, feeding and environmental control. In all
these systems water exchanges through the natural tidal effects, or pump fed
either from creek or from estuaries is a common practice. In all the cases, the
systems are prone to epizootics due to the pathogen introduction through the
incoming water, either brought by vectors, reservoir hosts, infected tissue
debris and free pathogens themselves. In this scenario, measures to prevent the
introduction of pathogen have become a necessity to protect the crop from the
onslaught of diseases as well as to prevent the discharge of waste water in to
the culture environment.The present thesis deals with Standardization of bioremediation technology for zero water exchange shrimp culture system
Description:
School of Environmental Studies,Cochin University of Science and Technology
Hatha, A A M; Mujeeb Rahiman, K M; Jasmine, B; Suresh Kumar,S(International Journal of current microbiology and applied sciences, 2014)
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Abstract:
In natural systems phytoplankton interact with planktonic (free living) and attached
epiphytic bacteria both synergistically and antagonistically. The specificity of the
association with micro algae and bacteria differs in terms of adhesion mechanisms
and metabolic cooperation. Present research was carried out to study the effect of
bacterial isolates namely Bacillus sp. and Pseudomonas sp. from algal culture
systems on the growth of micro algae such as Chaetoceros calcitrans and
Nannochloropsis oculata. C. calcitrans (F= 15.34; P<0.05) and N. oculata
(F=12.52; P<0.05) showed significantly higher growth, in treatments with Bacillus
sp. and Pseudomonas sp when compared to control.
Hatha, A A M; Shubhankar Ghosh; Einar, RingØ2; Deborah Gnana Selvam, A; Mujeeb Rahiman, K M; Naveen, Sathyan; Nifty, John(Sophia, January 22, 2014)
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Abstract:
In the present study we address the issue on gut associated lactic acid bacteria (LAB) isolated from the intestine of
estuarine fish Mugil cephalus using de Man Rogossa and Sharpe (MRS) agar. LAB isolates were identified biochemically and
screened for their ability to inhibit in vitro growth of various fish, shrimp and human pathogens. Most of the LAB isolates displayed
an improved antagonism against fish pathogens compared to shrimp and human pathogens. Selected representative strains displaying
high antibacterial activity were identified using 16S rRNA gene sequence analysis. Of the selected strains Lactobacillus brevis was
the most predominant. Four other species of Lactobacillus, Enterobacter hormaechei and Enterobacter ludwigii were also identified.
It was also observed that even among same species, considerable diversity with respect to substrate utilization persisted. Considering
the euryhaline nature of grey mullet (Mugil cephalus), the LAB isolated from the gut possessed good tolerance to varying salt
concentrations. This finding merits further investigation to evaluate whether the isolated LAB could be used as probiotics in various
fresh and sea water aquaculture
Description:
International Journal of Aquaculture, 2014, Vol.4, No.01