Aneeshkumar, N; Dr.Sujatha, C H(Cochin University of Science and Technology, October , 2009)
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Abstract:
We are in the cutting edge of a new era of development without leaving
any promises to next generation. But the scale and size of the problem are only
partially blamed. The juggernaut of Globalisation has trampled upon whatever
little hope we might have had making a quick transition to a less energy –
intensive world. “Environment friendliness begins at home”. Our quest for
productivity and profitability should progress simultaneous with our
cooperative responsibility of leaving behind a clean and green earth for the
generation to come. Climate change is the most pressing global environmental
challenge being faced by humanity, with the quest for better productivity for our
fragile ecosystem. It is too late to rely solely on reduction in Green house gas
emissions to mitigate climate change although this is undoubtedly crucial.
Coastal belts are more prone to these devastating impacts and its protection is an
intensive filed of research. The present study describes how the colourful
Carotenoids and Chlorophylls can be used in rapid hand on tool in conjunction
with molecular biology to open sources and it also explores the fate of organic
matter in the aquatic system and underlying sediments.
Description:
Department of Chemical Oceanography,
Cochin University of Science and Technology
Sreedevi, M G; Dr. Balchand, A N(Cochin University of Science and Technology, February , 2007)
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Abstract:
This thesis attempts to gain insight on the mathematical approach to estuarine
oceanographic systems; also to closely understand the governing processes in the
estuarine environment as well as in the adjoining river reaches.
The main aim was to conduct pollution routing for tropical estuarine environment
namely, for the Cochin estuary. In this context, attempts have been made to apply,
verify and validate the application of models, pre- prepared with necessary
modifications to suit the area of interest by use of RIVMIX and WASP tools.
Finally the thesis concludes by highlighting the advantages and limitations in
modelling water bodies and concurrentlysimulates most of the possible scenarios
within the purview of this work.
Description:
Department of Physical Oceanography,
Cochin University of Science and Technology
Latha Unnikrishnan; Devadasan,K(Central Institute of Fisheries Technology, 2006)
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Abstract:
Polycyclic Aromatic Hydrocarbons and other toxic compounds from industrial effluents are noted for their high potency for skin, lung, bladder and gastrointestinal cancers. Increased industrialization, and population growth led to greater production of wastes, Pesticides and PAHs have received attention due to their carcinogenic effects. The main objectives of the study were; to collect base line data on the concentration of PAHs in seawater and sediment from the west coast of India, the concentration of PAHs in certain species of fishes, the comparative levels of PAHs in fish, the influence of sediment characteristics on the concentration of PAH in sediment, changes in PAH concentration in water, sediment and fish, to provide a base line concentration of trace metals in water, sediment and fish, the seasonal changes in content of selected trace metals in water, sediment and fish from the west coast of India. The present study revealed that a predominance of silt and clay at all stations in the off Cochin area. The study has provided comprehensive information available to date for PAHs in seawater, sediment and fishes from the west cost of India especially from the Quilon to Mangalore region.
Joselet Mathew; Dr.Kulasekarapandian, S(Cochin University Of Science And Technology, November 6, 1990)
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Abstract:
This thesis deals with the population characteristics of Artemia
and the effect of different environmental parameters on the different
stages of Artemia in a salina at Tuticorin, south east coast of India.
The present investigation was carried out from 1985 to I987.
The study was initiated by undertaking a survey to find out suitable
Artemia habitats along the south east coast of India and a perennial
salina with an area of 0.25 ha was selected at Karapad (Tuticorin). Weekly
samplings were made for two full calender years (1986-87) to collect
the different stages of Artemia population as well as the different
environmental parameters. The thesis comprises of the following sections: Introduction, materials and methods, systematics, biology and distribution of Artemia, results and discussion, summary and bibliography. The section on results
and discussion gives the characteristics of Artemia population in the
salina, the seasonal variations of different environmental parameters
in the salina and their effects on different stages of Artemia population.
Description of an experiment conducted to show the sudden changes of
salinity on different stages of Artemia is also given as a separate
section.
Description:
Centre Of Advanced Studies In Mariculture,Cochin University Of Science And Technology
Manju, Sebastine; Pillai, N G K(Cochin University Of Science And Technology, October 23, 2014)
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Abstract:
Globally most of the conventional fish stocks have reached a state of optimum exploitation or even over-exploitation; efficient utilization of non-conventional resources is necessary to meet the supply-demand gap for protein supply. Mesopelagic fishes can be considered as one such promising resource for the future, if appropriate harvest and post-harvest technologies are developed. Increasing human population and increasing demand for cheaper food fishes has made myctophids a possible potential resource for future exploitation and utilization. Earlier studies indicated the abundance of Diaphus spp. in the eastern and northeastern Arabian Sea. The present study also indicates the dominance of Diaphus spp. in the deep sea trawling grounds of south west coast of India. Commercial viability of the myctophid fishing in the Indian waters has to be worked out. The present catch estimation is based on the Stratified Random Sampling Method from the landing data. As the coverage of sampling area was limited and the gear efficiency was not standardized, the data generated are not precise. A counter check for the estimates is also not possible due to the absence of comparable works in the study area. Fish biomass estimation by acoustics survey coupled with direct fishing would only confirm the accuracy of estimates. Exploratory surveys for new fishing areas to be continued, for gathering the distribution, abundance, biological and ecological data and map the potential fishing ground on a GIS platform and the data should be provided to the commercial entrepreneurs. Generally non-conventional and non-targeted resources are under low fishing pressure and exploitation rates. Low values of fishing mortality and exploitation rates indicate that removal from the stock by fishing was only nominal from the present fishing grounds. The results indicate that the stock is almost at virgin state and remains grossly underexploited. Since the extent of distribution and abundance of the stock in the ecosystem remains to be ascertained, sustainable yield could not be estimated. Also the impact of myctophids harvest, on other commercially important fishes, has to be studied.
Harikrishnan, M; Dr.Madhusoodana,Kurup B(Cochin University Of Science And Technology, September , 1997)
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Abstract:
Macrobrachium rosenbergii (de Man) and M.ide77a
(Hilgendorf) form two commercially important Palaemonid
prawns of the Vembanad lake (9 28' and 10 10’ N and 76
13' and 76 31' E). Both of them were known to have
contributed to a very lucrative fishery during the sixties,
however, in recent years these natural resources have badly
depleted owing to the impact of many man made alterations
brought about in the ecosystem such as habitat reduction,
physical obstruction imposed in the migratory pathway of
these species, pollution hazards, etc,. Changed
environmental conditions and increased fishing pressures
caused persistent alterations in the stock size of these
prawns during the past so many years, however, no serious
attempt was made to monitor the stock size from time to time
and also to bring out the resource characteristics. Though,
the morphotypic differentiation in grow out male population
of M.rosenbergii has been documented, no similar studies
were conducted with regard to natural male and female
population. Based on the data collected during fishery
cruise surveys conducted in Vembanad lake from March '94 to
February '96, population characteristics. postlarval
distribution, fishery and population dynamics of
M.rosenbergii and M.ide77a of the lake were studied in
detail.
Description:
School of
Industrial Fisheries, Cochin University of Science and Technology
Abdussamad, E M; Dr.Gopinatha Menon, N(Cochin University of Science and Technology, June , 2001)
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Abstract:
present work deals with the various aspects of population characteristics of penaeus indicus ,Metapenaeus dobsoni and metapenaeus monoceros during their nursery phase in tidal ponds and adjacent backwaters.Importance of the present study is to suggest scientific basis for the management of penaeid resources in tidal ponds and backwaters based on their biological characteristics to ensure better yield.Seasonal closure of fishing will be effective in improving the size of the shrimp at harvest.Hydrology of tidal ponds varied with location, but showed a common seasonal pattem.Seasonal variation in temperature was very small. It fluctuated between 27.5 to 32.3°C in tidalponds and 26.9 to 29.9°C in open backwaters.Improvement of nursery habitats with due consideration for biological requirements of the resource will ensure better growth, survival and abundance of the stock.The recruitment, growth and emigration data of prawns from their nurseries can be used successfully for fishery forecasting. projecting juvenile growth forward through time, it is possible to establish, which cohort contributes to offshore fishery each year. So, by interpreting the recruitment and growth data of species in their nurseries with offshore catch data, fishery can be forecasted successfully.
Description:
Central Marine Fisheries Research Institute, Kochi
Bindhu,Paul; George,M K(ICAR, CMFRI, November , 2000)
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Abstract:
The thesis contains the results of an investigation on the " Population Genetic Structure of the Penaeus indicus " from southeast and southwest coasts of India. The P.indicus, popularly known as the Indian white prawn, is distributed widely in the Indo-Pacific, starting from New South wales in Australia in the east to the east coast of Africa in the west. Its heavy demand in the export market, the species has been exploited intensively from all along its areas of distribution in Indian waters. The population genetic characteristics of the species were examined by three independent but complementary techniques, namely, morphometrics (truss network), biochemical genetics (isozyme electrophoresis ) and molecular genetics (RFLP and RAPD). The east and west coast populations of the species may be genetically different. Due to certain constraints, the results obtained from the studies of restriction fragment length 70 polymorphism (RFLP) were limited. The significant difference in the number of bands in the sample populations strongly suggests that these two populations have considerably different population genetic structures
Mohandas, N N; Dr.George, M K(Indian Council of Agricultural Research, Central Marine Fisheries Institute, January , 1997)
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Abstract:
The objective of present investigation was to study the population genetic structure of S. longiceps by applying three different basic population genetic techniques such as cytogenetics, non-enzymatic biochemicalgenetics (general protein) and morphomeristics/metrics.
Navas, K A; Dr.Mathew, K J(Cochin University of Science and Technology, March , 1993)
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Abstract:
Coral Reefs are marine, biogenic, wave resistant carbonate structures,
formed of the skeletal remains of hermatypic, or reef building organisms.
The main reef builders are calcifying Rhodophytes, molluscs, sponges, polychaetes and Cnidarians. Among them, scleractinian corals and hydrocorallians are by far the most important contributors to the formation of reefs. Coral reefs cover approximately 600 thousand square kilometers of the earth's surface (Crossland fl a_1., 1991) which is about 2x106 square kilometres of tropical oceans.
Simi Joseph,P; Dr.Rosamma,Philip(Cochin University of Science & Technology, July , 2009)
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Abstract:
The main source of protein for human and animal consumption is from
the agricultural sector, where the production is vulnerable to diseases,
fluctuations in climatic conditions and deteriorating hydrological conditions due
to water pollution. Therefore Single Cell Protein (SCP) production has evolved
as an excellent alternative. Among all sources of microbial protein, yeast has
attained global acceptability and has been preferred for SCP production. The
screening and evaluation of nutritional and other culture variables of
microorganisms are very important in the development of a bioprocess for SCP
production. The application of statistical experimental design in bioprocess
development can result in improved product yields, reduced process variability,
closer confirmation of the output response to target requirements and reduced
development time and overall cost.The present work was undertaken to develop a bioprocess technology for
the mass production of a marine yeast, Candida sp.S27. Yeasts isolated from the
offshore waters of the South west coast of India and maintained in the
Microbiology Laboratory were subjected to various tests for the selection of a
potent strain for biomass production. The selected marine yeast was identified
based on ITS sequencing. Biochemical/nutritional characterization of Candida
sp.S27 was carried out. Using Response Surface Methodology (RSM) the
process parameters (pH, temperature and salinity) were optimized. For mass
production of yeast biomass, a chemically defined medium (Barnett and Ingram,
1955) and a crude medium (Molasses-Yeast extract) were optimized using
RSM. Scale up of biomass production was done in a Bench top Fermenter using
these two optimized media. Comparative efficacy of the defined and crude
media were estimated besides nutritional evaluation of the biomass developed
using these two optimized media.
Description:
Dept. of Marine Biology, Microbiology and
Biochemistry, Cochin University of Science and
Technology,
Maya Paul, T; Dr.Saramma, A V(Cochin University of Science & Technology, 2005)
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Abstract:
This thesis presents a detailed account of a cost - effective approach
towards enhanced production of alkaline protease at profitable levels using
different fermentation designs employing cheap agro-industrial residues. It
involves the optimisation of process parameters for the production of a
thermostable alkaline protease by Vibrio sp. V26 under solid state,
submerged and biphasic fermentations, production of the enzyme using cell
immobilisation technology and the application of the crude enzyme on the
deproteinisation of crustacean waste.The present investigation suggests an economic move towards
Improved production of alkaline protease at gainful altitudes employing
different fermentation designs utilising inexpensive agro-industrial residues.
Moreover, the use of agro-industrial and other solid waste substrates for
fermentation helps to provide a substitute in conserving the already dwindling
global energy resources. Another alternative for accomplishing economically
feasible production is by the use of immobilisation technique. This method
avoids the wasteful expense of continually growing microorganisms. The
high protease producing potential of the organism under study ascertains
their exploitation in the utilisation and management of wastes. However,
strain improvement studies for the production of high yielding variants using
mutagens or by gene transfer are required before recommending them to
Industries.Industries, all over the world, have made several attempts to exploit
the microbial diversity of this planet. For sustainable development, it is
essential to discover, develop and defend this natural prosperity. The
Industrial development of any country is critically dependent on the intellectual
and financial investment in this area. The need of the hour is to harness the
beneficial uses of microbes for maximum utilisation of natural resources and
technological yields. Owing to the multitude of applications in a variety of
industrial sectors, there has always been an increasing demand for novel
producers and resources of alkaline proteases as well as for innovative
methods of production at a commercial altitude. This investigation forms a
humble endeavour towards this perspective and bequeaths hope and
inspiration for inventions to follow.