Thankappan, Pillai C; Dr.Silas, E G(Cochin University of Science And Technology, March , 1982)
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Abstract:
In the present study, fifteen typee of diseases
occurring in twenty one species of finfishes end
shellfishes are documented and the causes studied. All
these are being reported from India for the first time
which adds considerably to our existinq knowledge on the
subject.In fact, the candidate's studies embodied in
this Thesis has also an applied significance aimed at
the proper management_of finfish and shellfish aquaculture
systems in this country.The thesis is presented in seven main chapters.
Mukundan, M K; Dr.Gopakumar, K(Cochin University of Science And Technology, July , 1982)
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Abstract:
Lipids constitute a significant portion of the
biomass of earth and lipolytic enzymes play a very important
role in lipid turn over. Apart from their biological
significance, lipolytic enzymes are also very important
in the fields of nutrition, food technology, medicine
and preparative and analytical lipid biochemistry.
Recent developments in the study of proteins and
enzymes have largely benefited the study of lipolytic
enzymes, that some of these enzymes were isolated in pure
form. Even today there is a continuous search for new and
potent sources of these lipolytic enzymes. The zest for
elucidating the structure and mechanism of action of the
enzymes obtained in pure form for biochemist still remains
unabated. The literature shows no record of such an
effort for the study of lipases from marine sources. The
fact that many fishes like oil sardine, mackerel, cat fish,
seer etc. contains large amounts of lipid shows the possibility
of the existence of lipases in significant amounts
necessitating their exhaustive study. Such a study will,
not only provide alternate sources for lipase but also will
provide methods to curb lipolysis and the resultant rancidity
and off flavor development in fish and fishery
products.
Description:
School of marine sciences, Central institute of fisheries technology, Cochin University of Science And Technology
Abhilash, S; Dr.Saleena, Mathew(Cochin University of Science And Technology, November 5, 2013)
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Abstract:
This study was materialized to analyze the management issues
regarding the seafood processing waste generated including its impact on the coastal
community in one of the important seafood hubs of India Aroor Seafood Industrial Belt Alappuzha District Kerala The area has witnessed serious pollution issues related to seafood
waste and seldom has any action been implemented by either the polluters or the preventers
Further this study is also intended to suggest a low cost eco friendly method for utilizing the
bulk quantity of seafood solid waste generated in the area for the promotion of organic farming
The high nutritional value of seafood enables the subsequent offal to be considered as an
excellent source for plant nutrition The liquid silage accepted worldwide as the cheapest and
practical solution for rendering fish waste in bulk for production of livestock feed is adopted in
this study to develop foliar fertilizer formulations from various seafood waste The effect of
seafood foliar sprays is demonstrated by field studies on two plant varieties such as Okra and
Amaranthus
Description:
School of
Industrial Fisheries, Cochin University of Science & Technology
Abdu Rahiman, K P; Dr. Sunilkumar Mohamed, K(Indian Council of Agricultural Research, August , 2008)
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Abstract:
Food and feeding habits of fourteen demersal finfishes exploited off the
Karnataka coast were studied to investigate trophic interactions within the
marine food web. Index of Relative Importance (lRI),Ontogenetic, seasonal (pre-monsoon,
monsoon and post-monsoon) variation in feeding and prey-predator
relationship studies were conducted.The results of prey-predator trophic interaction studies identified four
major trophic guilds based on the predators feeding similarity.Trophic guild I is 'copepod and detritus fceders'with an average
group similarity of 61.4%. The second trophic guild, 'prawn and crab
feeders'with an average similarity of 52.7%. 'Acetes feeders', the largest trophic
guild with an average group similarity of 62.5%, composed of six
demersal finfish species.The guild 'piscivores' is
constituted by C. limba/us and P. arsius with an average similarity of
45%.For each predator, ontogenetic diet shift
is common and is characterized by prey of low to high trophic level.Strong
selection of certain prey types was observed in some predators while most
of them avoided abundant prey.In addition to Acetes spp, strong
predation impact was observed for penaeid prawns, epibenthic crabs and
detritus.This information on trophic guilds and prey-predator interactions can be
used to construct trophic model on the benthic ecosystem off Karnataka
and to investigate fishery induced changes as well as predation impact of
different animals on commercially important demersals
Description:
Central Marine Fisheries Research Institute,
Indian Council of Agricultural Research
Prabhakaran, N; Dr. Sivadas, P(Cochin University of Science and Technology, April 30, 1990)
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Abstract:
Man's concern with environmental deterioration is one of the major reasons for the increased interest in marine and estuarine microbes. Microbes form an important link in the biogeochemical cycling and their cyclinq activites often determine to a large measure the potential productivity of an ecosystem In the recycling of the nutrients in the estuary,
bacteria and fungi therefore play a particularly significant role.The allochthonous plant materials contain biopolymers such as cellulose, lignin, humus etc., that are difficult to degrade into simpler substances. The fungi have the ability to degrade _substances, thereby making them available for cycling within the system. The present study is devoted to find the composition and the activity of myco populations of Cochin backwater. For convenience the thesis is divided into eight chapters. The opening chapter briefly reviews the literature and projects the importance of work and the main objectives. Second chapter discusses the materials and methods. In the third chapter the systematic and taxonomy of estuarine yeasts are examined in detail since this information is scarcely available for our waters. The general ecological aspects of the yeasts and filamentous fungi in the area of study are examined in the fourth chapter using appropriate statistical techniques. A special reference to the fungi in a small mangrove ecosystem is attempted in the fifth chapter. The biochemical studies are discussed in the sixth chapter and the penultimate chapter provides an overall discussion. In the last chapter the summary of the work is presented.
Ajith,G Nair; Damodaran,K T(Department of Marine Geology and Geophysics, School of Marine Sciences, 2001)
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Abstract:
The present work attempts to trace the variation in the physical and chemical behavior of ilmenite, since its release from country rocks and subsequent transportation to the coast through the progressive weathering environments of laterite, sedimentary rocks, rivers and estuarine systems. Since the hinterland of the study area consists of crystalline and sedimentary rocks and their weathered forms (laterites), the contribution of each lithological system to the beach placer is attempted. The results of the study show that the most magnetic fraction contains more content of altered phases than the relatively unweathered fractions. The fractions separated above 0.35A define a high grade of ilmenite ore enriched in Ti content. The lattice volume generally decreases with alteration. The magnetic studies revels that the Chavara ilmenite are found to be made up to low magnetic crops with about 46% of the bulk ilmenite constituted by fractions separated at above 0.35A. In the Manavalakurichi ilmenite on the other hand, around 91% of the beach ilmenite is made of fractions separated at or below 0.3A
Purushan, K.S; Dr.Sakthivel, M(Marine Products Export Development Authority, December , 1992)
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Abstract:
The thesis entitled "Studies on improved practices of prawn farming for higher production in central Kerala"
prepared by the author describes various practices prevailing in the study area in order to elucidate their relative merits. The study on
semi-intensive farming at Mundapuram, Kannur was also carried out
and included in the thesis for comparison.The author felt it important to make a
critical study of the existing culture practices in the central Kerala,
a region where it has been existing since time immemorial.Careful analysis of data accrued by the author has helped
him to identify strength, weakness, opportunities and threats
confronting the shrimp farming.
As a result it was possible to evolve an appropriate
management technology taking into consideration the various ecological
(location specific), social and economical conditions prevalent in the
vast study area.
Vaheed, Yavari; Dr.Thomas, M M(Cochin University of Science and Technology, December , 1994)
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Abstract:
The Indian edible oyster Crassostrea madrasensis (Preston) is known to be a highly suitable candidate species for culture. Though Q, madrasensis has been subjected to intensive research, there has been no significant attempt to culture this oyster commercially. One major reason for the lack of interest in oyster culture could be the disparity in growth, survival and production reported by earlier workersf from different regions along the Indian coast. Greater predictability of production can create confidence and encourage entrepreneurs interested
in oyster culture. The present study, which is a detailed investigation on the influence of various environmental variables on growth and reproduction of Q, madrasensis, is not confined to the impact of only hydrological parameters but is also extended to study the effect of different degrees of aerial exposure on growth and survival. The main objective of the study is to develop a background for subsequent development of a site suitability index for culture of Q, madrasensis along the Indian coast. Two sets of experiments were conducted during the present study. Details of the experiments are presented in the thesis under two major chapters comprising four sections each. Each chapter has a separate introduction, materials and methods, results and discussion.
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Sona, A; Dr. Mukundan, M K(Central Institute of Fisheries Technology, July , 2004)
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Abstract:
In the attempt to find out catalytic potency and properties of the endoglucanase
of green mussel, it could be highlighted that the enzyme is efficient in degrading
carboxymethylcellulose to reducing sugars. The immobilized enzyme will find
applications in the food industry, paper and pulp industry, wood preservation,
alcohol and pharmaceutical industry.The purification method employed i.e. Sephadex G100 chromatography
employing affinity and exclusion principles simplify the purification procedure.Addition of Mg2+ and Co2+ at 10mM concentrations enhances endoglucanase
activity of green mussel.The immobilized endoglucanase can be used for deinking mixed office waste
paper. The endoglucanase if supplemented with exoglucanase and B-glucosidase
under appropriate conditions would help in the recycling of paper.
Seema Nair,P; Surendran,P K(Microbiology, Fermentation and Biotechnology Division Central Institute of Fisheries Technology, Faculty of Marine Sciences, November , 2000)
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Abstract:
In this study, an attempt has been made to gather enough information regarding lactic acid bacteria from fish and shellfish of tropical regions. The occurrence and distribution of lactic acid bacteria in fresh and frozen marine fish and shellfish, farmed fish and shellfish, cured and pickled fish and shellfish have been investigated. Lactic Acid Bacteria (LAB) have for centuries been responsible for the fermentative preservation of many foods. They are used to retard spoilage and preserve foods through natural fermentations. They have found commercial applications as
starter cultures in the dairy, baking, meat, fish, and vegetable and alcoholic beverage
industries. They are industrially important organisms recognized for their fermentative
ability as well as their nutritional benefits. These organisms produce various compounds
such as organic acids, diacetyl, hydrogen peroxide and bacteriocins or bactericidal
proteins during lactic fermentations.Biopreservation of foods using bacteriocin producing LAB cultures is becoming widely used. The antimicrobial effect of bacteriocins and other compounds
produced during fermentation of carbohydrates are well known to inhibit the growth of
certain food spoiling bacteria as well as a limited group of food poisoning and pathogenic bacteria LAB like Lactobacillus plantarum are widely used as starter cultures for the
Production of fish ensilage. The present study is the first quantitative and qualitative study on the
occurrence and distribution of lactic acid bacteria in fresh and frozen fish and prawn. It
is concluded that Lactobacillus plantaruni was the predominant lactobacillus species in fresh and frozen fish and shellfish. The ability of selected Lactobacillus cultures to grow at low temperatures, high salt content, produce bacteriocins, rapidly ferment sugars and decrease the pH make them potential candidates for biopreservation of fish and shellfish.
Anuradha,Krishnan; Dr.Alagarswami, K(Cochin University of Science and Technology, April , 1987)
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Abstract:
The present study has yielded a great deal of information on nutrition of pearl oyster larvae. T he formulae presented may be used effectively and with advantage in improving the larval rearing system with specific reference to nutritional aspects. It is also hoped that this is the first comprehensive study on pearl oyster larval nutrition would stimulate further detailed investigations on many of the other finer aspects of tropical bivalve larval nutrition.
Description:
Centre Of Advanced Studies In Mariculture, Central Marine Fisheries Research Institute
Manohar, Chandge S; Dr. Paul, Raj R(Cochin University of Science And Technology, April , 1987)
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Abstract:
Recent studies with prawns indicate that their growth, metamorphosis, maturation and moulting are affected by the typo and level of lipids supplied in the diets. Despite the
recognition of the importance of lipids in the diets of prawns there is no information on the essentiality and quantitative lipid requirements of Indian penaeid prawns. Therefore during the present study about 24 laboratory experiments were conducted to determine the essentiality and dietary requirements of total lipids, phoapholipida, fatty acids cholestrol, and to ascertain the nutritional value of natural lipid sources for the larvae, post-larvae tad juveniles of one of the most suitable cultivable species of panaeid prans. All the experiments were conducted in the laboratory following standard procedures, using isonitrogen and approaximately
isocaloric purified diets. Changes were made in tha ingridients as required for specific requirements. For the larvae diets of particle size < 37) were fed, For the postlarvae
and juveniles pellet feed was given. while data on survival and growth of larvae and pout-larvae 1-10 were recorded, data were collected on the survival, growth, food conversion ratio, protein efficiency ratio and biochemical composition at the body for post-larva 11-25 and juveniles. The influence ot fatty acid pattern of dietary lipid sources on the fatty acids profile of prawns were also studied in the case of juvenile prawns. Analysis of variance andleast significant differences
test were employed to determine the significant differences between treatments in the observed parameters with the help of a newlett Packard master computer.
Description:
Central marine fisheries research institute, Cochin University of Science And Technology