Penaeid prawn resources of India

India's annual catch of prawns and shrimps is second only to that of the United States and it is estimated at 91,600 tonnes in 1967. The presently exploited pravm resources are spread over a narrow inshore area of about 15 km. width along the entire coastline of the country. Regional as well as specific preponderances of the exploited species are manifested in the overall commercial catches. Of the total quantity of prawns and 8hrimf» lan<ted in the country over 50% by live weight is contributed by penaeid prawns. Ten species included under the four genera Penaeus, Melapenaeus, Parapenaeopsis and Solenocera contribute to the commercial fishery. As additional fishing effort was introduced in the capture fishery year by year, the increasing trend observed in the past years in the total landings of penaeid prawns is of little consequence. An attempt is, therefore, made here to assess the effect of this increased effort on the prawn stodc. Possibility of increased exploitation of the prawn resources is examined based on catch data of the mechanised fishing vessels operating in the south-west coast of India where the capture fishery for prawns is most developed at present

Preliminary observations on the biology and fisheries of the thread-fin, Polydactylus indicus shaw in the Bombay and Saurashtra waters

The thread-fins {Polynemidce) constitute an important group of commercial fishes in Indian waters of which Polydactylus indicus forms probably the most important species in Bombay and Saurashtra coasts. Except for stray records of the different species of the family in various localities and of a brief study of the breeding season and maturity of Eleutheronema tetradactylum by Karandikar and Palekar (1950), and a descriptive account of the larval development of the same species by Sarojini and Malhotra (1952), very little pubUshed information is available regarding the distribution, food and feeding habits, maturity, breeding, commercial catches etc. of this important group of fishes. During the two years, 1951-53, a detailed study of the exploratory trawl catches of the cutters, M. T. " Pratap " and M. T. " Ashok ", of the Government of India Deep Sea Fishing Station, Bombay, and of the commercial catches of the Japanese trawler, " Taiyo Maru " No. 17, of the Taiyo Fishing Co., Ltd., Bombay, was made, with biological observations on the diifferent groups of fishes as they were hauled up on board the vessels, or, in a few cases, at the dock where the catches were landed. The observations made on Polydactylus indicus (locally called Dara or Dhara) are given in this communication

On the occurrence of the eel Neenchelys buitendijki Weber & de Beaufort in Indian waters

While examining a collection of eels from Sassoon Dock- the principal fish landing place of Bombay City a few specimens of Neenchelys buitendiiki Weber & de Beaufort were obtained in April 1953. The species not having been recorded from India so far, regular searches were made in the subsequent fish catches for further material and relevant data regarding its occurrence. It was revealed that the species is not rare in this locality, and a large number of specimens was obtained

Hatchery production of prawn seed

The successful spawning of the Japanese prawn P. japonicus and the rearing of its larvae through various stages under controlled conditions achieved by Hudinaga (1935, 1942) have opened up series of developments all over the world leading to commercial cultivation of marine prawns

Prawn Fisheries

The most outstanding development that has taken place during the past decade in India's fishing industry is the phenomenal increase of prawn export brought about chiefly by the introduction of modern processing methods. The insatiable demand for prawns from the United States and other foreign countries has been the incentive for most of the entrepreneurs to establish up-to-date processing plants for packing prawns. As a direct consequence of the high demand for raw material and due to the timely help and advice rendered by the various research and other organisations of the Government of India, a number of mechanised fishing vessels were introduced into the capture fisheries for prawns. While these developments had their effect in the fishing industry all over the country it is to be admitted that maximum development has taken place in the south-west coast of India from where more than 80% of the exportable varieties of prawn are now being landed

Preparation of proton exchange membrane by radiation-induced grafting method : Grafting of styrene onto poly(ethylene tetrafluoroethylene) copolymer films

Radiation induced grafting of styrene onto poly(ethylene-tetrafluoroethylene) (ETFE) copolymer film was carried out to prepare graft copolymer (ETFE-g-polystyrene) that can host sulfonic acid groups and form proton exchange membrane for polymer electrolyte fuel cell (PEFC). The effect of monomer concentration and type of solvent on the degree of grafting was investigated. The formation of graft copolymer film was confirmed by FTIR spectrum analysis

Trends in crustacean fisheries

Crustacean fisheries have great economic importance in this country. Although fishing for prawns, lobsters and crabs has been the traditional occupation of the coastal fishermen in India for considerable length of time, reliable information about them was not available till recently. Similarly, the export trade of prawn pulp from west coast of India to Burma and Ceylon was as old as the rice trade of the latter countries with India. At present, among the prawn and shrimp producing countries of the world India ranks second only to the United States

Synopsis of biological data on the jumbo tiger prawn Penaeus monodon Fabricius 1798

FAO World Scientific Conference on the biology and culture of shrimps and prawns: Synopsis of biological data on the jumbo tiger prawn Penaeus monodon Fabricius 179

Virtual integration platform for computational fluid dynamics

Computational Fluid Dynamics (CFD) tools used in shipbuilding industry involve multiple disciplines, such as resistance, manoeuvring, and cavitation. Traditionally, the analysis was performed separately and sequentially in each discipline, which often resulted in conflict and inconsistency of hydrodynamic prediction. In an effort to solve such problems for future CFD computations, a Virtual Integration Platform (VIP) has been developed in the University of Strathclyde within two EU FP6 projects - VIRTUE and SAFEDOR1. The VIP provides a holistic collaborative environment for designers with features such as Project/Process Management, Distributed Tools Integration, Global Optimisation, Version Management, and Knowledge Management. These features enhance collaboration among customers, ship design companies, shipyards, and consultancies not least because they bring together the best expertise and resources around the world. The platform has been tested in seven European ship design companies including consultancies. Its main functionalities along with advances are presented in this paper with two industrial applications