Distribution problems and marketing management of marine fisheries in India

Demand and price of marine fish are continuously increasing in our domestic and export markets. Fish marketing system in India is rapidly changing in recent years due to the vast improvement in handling technology, transportation and consequent market penetration. This paper deals with the fish marketing system prevailing in India, price structure, marketing margins of commercially important varieties offish and the share of fishermen as well as middlemen in consumer's rupee at selected centres of Gujarat, Maharastra, Karnataka, Kerala, TamilNadu and Andhra Pradesh during 1996-97 by direct observation. The fishermen's share in consumers' rupee varied from an average of about 30 to 68% for different varieties. Marketing costs including transportation ranged from 6 to 13%, wholesalers from 5 to 32% and retailers from 14 to 47% of consumers' rupee for different varieties of fish. Considerable inter-state variation in consumers preference and fishermen's share in consumer rupee for different varieties offish has been observed. A few suggestions for the improvement offish marketing systems have also been given

Pond based grow out system of gracilaria verrucosa

Gracilaria verrucosa was successfully cultivated in a pond based aquaculture system at Narakkal. Kerala. India. Daily growth rate of seaweed was found to be maximum (19.22%) during 60 days of introduction. The growth. pigment constituents and the yield of agar were influenced by the environmental parameters. Agar yield and photosynthetic pigments declined in the initial period up to 50 days due to acclimatization of the plants lo new environment which was collected from Chennai, India and introduced in the pond at 'Narakkal. After 60 days, the algae started establishing in the bottom of the pond and an initial harvest of 230.25 kg was harvested after 90 days of culture period. Further regular harvest was made at every 10 days interval yielding 1015 kg of Gverrucosa during the culture period. The agar content ranged between 7-14.8% and bottom sample exhibited better yield of. agar than the plants cultured in the floating raft

Productivity of different mangrove ecosystems

This paper embodies the results of field studies conducted on productivity in three different mangrove areas, viz.. Cochin Backwater, Killai Backwater and Andaman Nicobar Islands. The rate of production varied in these areas, but generally indicated a good production rate. The energy inputs from various sources into the ecosystem and the process of conversion are discussed in the light of an overall energy budget available. The productivity of adjacent marine environments is also discussed in the light of their suitability for development of mariculture practices

ELECTROCHEMICAL REDUCTION OF CARBONYL COMPOUNDS

Cyclic voltammograms were taken for aromatic carbonyl compounds like benzaldehyde and acetophenone in 0.2M sulphuric acid medium and Mcilvaine buffer at lead electrodes. Galvanostatic reduction of both aliphatic and aromatic carbonyl compdunds was carried out at tin and zinc electrodes in alkaline and acid medium, to obtain corresponding pinacols and alcohols

An appraisal of the biotic and abiotic factors of the mangrove ecosystem in the Cochin backwater, Kerala

In view of the significance of the mangrove areas for coastal aquaculture, a reconnaissance survey of the mangrove areas in the Cochin estuarine system was undertaken during 1976-78. The mangroves of Cochin are formative, mostly developing on small reclaimed or natural islands. Environmental characters showed considerable seasonal fluctuations, especially the salinity which in some of the natural ponds in the mangrove area varied from freshwater condition to high saline, mainly due to the monsoonal and tidal influence. The rate of primary production ranged from 0.02 to 2.0 gC/m'/ day which fluctuated from the ambient waters of the estuary

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Not AvailableGracilaria verrucosa was successfully cultivated in a pond based aquaculture system at Narakkal. Kerala. India. Daily growth rate of seaweed was found to be maximum (19.22%) during 60 days of introduction. The growth. pigment constituents and the yield of agar were influenced by the environmental parameters. Agar yield and photosynthetic pigments declined in the initial period up to 50 days due to acclimatization of the plants lo new environment which was collected from Chennai, India and introduced in the pond at 'Narakkal. After 60 days, the algae started establishing in the bottom of the pond and an initial harvest of 230.25 kg was harvested after 90 days of culture period. Further regular harvest was made at every 10 days interval yielding 1015 kg of Gverrucosa during the culture period. The agar content ranged between 7-14.8% and bottom sample exhibited better yield of. agar than the plants cultured in the floating raft.Not Availabl

8-Ethoxy-3-(4-isopropylbenzylidene)-6-methylchroman-4-one

In the title compound, C22H24O3, the non-fused benzene ring makes a dihedral angle of 52.56 (7)° with the benzene ring of the chromanone unit. The molecular structure is stabilized by a weak intramolecular C—H...O interaction and the crystal packing is stabilized by weak intermolecular C—H...O interactions. The isopropyl group is disordered over two positions, with site occupancies of 0.48/0.52