Vijayakumar, S; Dr.George, M K(Cochin University of Science and Technology, May , 1992)
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Abstract:
The thesis deals with the results of an investigation on the "BIOCHEMICAL GENETICS OF MUGIL CEPHALUS" from Cochin, Madras and Orissa. It is presented under the following major headings: Introduction, Review of Literature, Materials and Methods, Results, Discussions, Conclusions, Recommendations, Summary and References.The introduction gives a brief account of historical and modern back ground on the stock concept in fisheries research and management, followed by the importance and potential role of biochemical genetics in the identification of natural units of fisheries management.
In the review of literature published reports relevant to biochemical genetics with special reference to that of general proteins and enzyme systems of fish populations were considered. A detailed account of the source of experimental specimens, mode of collection, transportation, sample extraction, gel preparation/gel electrophoresis, buffer systems, staining procedures of proteins/enzymes, standardization of experiments, interpretation of electrophoretic data using basic formulae etc. are given in the materials and methods section. Four important conclusions were drawn on the basis of the results of the present investigation. Three recommendations were also made on the basis of evaluation
of the results.
Shaju S.S.; Dr. B. Meenakumari; Dr. Muhamed Ashraf, P(Cochin University of Science and Technology, March , 2015)
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Abstract:
In situ methods used for water quality assessment have both physical
and time constraints. Just a limited number of sampling points can be
performed due to this, making it difficult to capture the range and variability
of coastal processes and constituents. In addition, the mixing between fresh
and oceanic water creates complex physical, chemical and biological
environment that are difficult to understand, causing the existing measurement
methodologies to have significant logistical, technical, and economic
challenges and constraints.
Remote sensing of ocean colour makes it possible to acquire
information on the distribution of chlorophyll and other constituents over large
areas of the oceans in short periods. There are many potential applications of
ocean colour data. Satellite-derived products are a key data source to study the
distribution pattern of organisms and nutrients (Guillaud et al. 2008) and
fishery research (Pillai and Nair 2010; Solanki et al. 2001. Also, the study of
spatial and temporal variability of phytoplankton blooms, red tide
identification or harmful algal blooms monitoring (Sarangi et al. 2001; Sarangi
et al. 2004; Sarangi et al. 2005; Bhagirathan et al., 2014), river plume or
upwelling assessments (Doxaran et al. 2002; Sravanthi et al. 2013), global
productivity analyses (Platt et al. 1988; Sathyendranath et al. 1995;
IOCCG2006) and oil spill detection (Maianti et al. 2014). For remote sensing
to be accurate in the complex coastal waters, it has to be validated with the in situ measured values. In this thesis an attempt to study, measure and validate
the complex waters with the help of satellite data has been done.
Monitoring of coastal ecosystem health of Arabian Sea in a synoptic way
requires an intense, extensive and continuous monitoring of the water quality
indicators. Phytoplankton determined from chl-a concentration, is considered as
an indicator of the state of the coastal ecosystems. Currently, satellite sensors
provide the most effective means for frequent, synoptic, water-quality
observations over large areas and represent a potential tool to effectively assess
chl-a concentration over coastal and oceanic waters; however, algorithms
designed to estimate chl-a at global scales have been shown to be less accurate
in Case 2 waters, due to the presence of water constituents other than
phytoplankton which do not co-vary with the phytoplankton. The constituents of
Arabian Sea coastal waters are region-specific because of the inherent
variability of these optically-active substances affected by factors such as
riverine input (e.g. suspended matter type and grain size, CDOM) and
phytoplankton composition associated with seasonal changes.
John Chellappan, N; Dr.Varghese, Oommen P(Cochin University Of Science And Technology, February 27, 1989)
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Abstract:
The study was undertaken with the aim to study
the variation of different components in the drip/liquid
and meat sampled at different stages of processing.
The fresiand the frozen oyster meat were canned in Tin
and in Aluminium cans. Various media like brine, oil,
tomato sauce and wine were used. Observations were made
physically and chemically for the drip/liquids and the
meat at different stages of processing. The chemical
analysis were made for certain nutritional and mineral
components
Description:
Department of Marine Sciences,Cochin University Of Science And Technology
Sriramachandra Murty, V(Cochin University of Science and Technology, August , 1995)
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Abstract:
This thesis Entitled Studies on certain exploited marine Finfish Resources of india.Marine fish catch forecasting is short term or long term basis for purposes of explation and management. Among the short term forecasts, two approaches need serious consideration in India: 1. to improve the methods of understanding the influence of environmental characteristics on the abundance or availability of fish in different areas in different periods and to make the forecasts of the same, 2. to make analysis of time series catch data (ARIMA models) to make forecasts of catch in the next year or in a particular period during next year. There is some evidence of suitability of these approaches to Indian marine fisheries but attempts aiming at comprehensive studies should be made. In the area of long term forecasts, considerable work is done in India on single species assessments but in the context of multi species, multigear nature of Indian marine fisheries, assessments of all species together in a mixed fishery are urgently required for effective managements of fisheries.
Description:
School of Marine Scxience, Cochin University of Science and Technology
Ivy,Thomas; Dr.Chandramohan, D(Cochin University Of Science And Technology, April 21, 1982)
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Abstract:
The thesis is proposed to study the occurrence and distribution
of chitinoclasts in water, sediment and fauna as
related to site characteristics such as temperature,
salinity, depth of water, pH, etc. Since no information
is available on the chitinolytic properties of coastal
strains, it is also proposed to study the chitinolytic
activity of the bacterial isolates in relation to various
environmental conditions. It is also planned to work out the taxonomy of some of the representative isolates and certain kinetic properties of their chitinases. It is expected that the results of the study would yield a comprehensive information-on the chitinoclastic bacteria in the southern coastal zone of
west coast of India.
Description:
Department Of Marine Sciences,Cochin University Of Science And Technology
Sanjeev, S; Dr.Joseph, Stephen(Cochin University of Science and Technology, February 5, 1990)
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Abstract:
In India much work has been done on different aspects of quality of
processed fish and fishery products (Pillai et al., 1965; Iyer and Chaudhuri,
1966; Iyer et al., 1966; Sreenivasan and Joseph, 1966; Pillai and Rao, 1969;
Mathen et al., 1975; Valsan et al., 1985) and standards have been formulated
for almost all the fishery products. Quality standards for fresh fish cover
only a few fish species available in the markets. For the formulation and
recommendation of quality standards for fish and fishery products for domestic
trade detailed background informations are necessary. Khot et al., (1982),
Valsan et al. J (1985) and Iyer et al. (1986) have reported on the bacterial
flora of sea foods at retail level in Bombay. Cochin is a major fish landing
centre of the south west coast of India, and an average of 25,000. tonnes
of fish/shell fish are landed annually at this harbour which is about 10 percent
of the total catch of fish in Kerala (Lakshmanan -et -al., 1984). All the
varieties of marine, brackish water and fresh water fishes are available in
Cochln throughout the year for catering to Its cosmopolitan. population and
informations regarding their bacteriological quality are scanty. Hence the
present study was undertaken to investigate the bacteriological quality of fish
and fishery products available in the markets and cold storages situated in
and around Cochin meant for internal consumption.
Description:
Central Institute of Fisheries Technology,
Cochin University of
Science and Technology
Asok Kumar,K; Dr.Shahul,Hameed M(Cochin University of Science & Technology, 1990)
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Abstract:
The present study of the parasitic copepods gives the taxonomic description of thirty one species of parasites collected from various elasmobranch fishes of Kerala coast. Copepods parasitic on fishes include three sub orders, viz. poecilostomatoida, cyclopoida and siphonostomatoida. Parasitic copepods of elasmobranch fishes for the present study were collected from different fish landing centres of Kerala and by undertaking regular fishing trips. The collected parasites are identified to the species level and described. It is found that out of thirty one species, fifteen are new to science. They belong to the genera viz. Nothobomolochus Vervoot, 1962, Caligus Muller, 1785, Alebion, Kroyer, 1863, Gloipotes Steenstrup and Lutken, 1861, Pandarus Leach,1819, Perissopus Steenstrup and Lutken, 1861, Echthrogaleus Steenstrup and Lutken, 1861 and Kroyeria van Beneden, 1853. Fifteen new host records were reported. Two genera viz. Echthrogaleus and Entepherus were reported for first time from Indian waters. A new genus called Penicillus was erected. The general observations made during this study revealed certain interesting aspects of host-parasite relationship, host specificity, site specificity, adaptive modifications and geographical distribution.
Description:
Department of Industrial Fisheries, Cochin University of Science and Technology
Rashiba, A P; Dr.Saramma, Panampunnayil U(Cochin University of Science And Technology, April 9, 2010)
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Abstract:
The main objectives of the study are: To study the seasonal distribution of copepods with special reference to their qualitative and quantitative distribution, with notes on biodiversity in the Andaman Sea and the Bay of Bengal.
To study the spatial and temporal distribution of copepods in the Andaman Sea
and the Bay of Bengal.To understand the hydrography and the environmental characteristics of the Andaman Sea and the Bay of Bengal and their role in the distribution and biomass of copepods.To study the vertical migration/diurnal migration of the copepods.
To study the difference between the coastal and oceanic composition of copepods
in the study area and the factors responsible for it.
Description:
National Institute of Oceanography, Regional Centre, Kochi
Radha Devi, A; Dr.Kurian, C V(Cochin University Of Science And Technology, August , 1983)
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Abstract:
Cumacea plays an important role in the marine environment as food for man and comercially important species of fishes . Hence it is desirable to have a better knowledge of the taxonomy, ecology, biology and distribution of the various species of Cumacea. The present work is directed towards the study of the above aspects
Description:
School Of Marine Sciences,Cochin University Of Science And Technology
The main objective of the study was primarily to determine the effect of hydrographical parameters especially nutrients which were supplied externally to the seawater while culturing the diatom Chaetoceros calcitrans, under laboratory conditions, and to determine its optimum concentration for ideal growth of the culture, in such a condition of increased rate of pollution due to the industrialization and effluents. Also an attempt was made to study the possible correlation of diatom abundance in the South west Coast of India with the landings of the pelagic fishery resources, especially sardine, mackerel and anchovy, since these fishes are largely diatom feeders. Positive correlation was found between the diatoms and pelagic fish landings of Thalassery and Vizhinjam area while at Cochin there was less significant correlation between the two variables
Subhash, Chander; Dr.Diwan, A D(Cochin University of Science and Technology, November , 1986)
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Abstract:
In the present study, the main emphasis was to find out it seasonal and ecosystem specific variations of calcium magnesium, phosphorus, copper and zinc in the water and the
sediment has any role to play in altering the concentration of these elements in different tissues of intermoult p.indicus as evidenced by the seasonal studies in the grow out
and the marine ecosystems
Description:
Centre of advanced studies in mariculture, Central marine fisheries research institute