Tissue culture in pearl oyster

The first work on cell culture in marine molluscs started since 1960s. Many researchers attempted to improve the culture media composition by adding vertebrate sera as growth factor. In primary cultures, the tissue dissociation methods and medium composition were frequently complemented with homologous and heterologous substanc

Marine pearl production: CMFRI develops tissue culture technology

Marine pearl production: CMFRI develops tissue culture technolog

Report of the Special Scientific Team to Andaman and Nicobar Islands to give research support to thrust areas in fisheries

Realising the importance and urgent need for judicious exploitation and utilization of the marine living resources of the Andaman and Nicobar seas, the Director General, Indian Council of Agricultural Research (ICAR) as Chairman of the Central Coordinating Committee for Survery of Living Resources had recommended at the first meeting of the committee, held in May 1988 that the Central Marine Fisheries Research Institute (CMFRI) should depute its scientists to the Central Agricultural Research Institute for Andaman and Nicobar Islands (CARI), Port Blair on a fixed tenure basis to support the R&D thrust in fisheries in the region. Consequent to this, from 1-8 March 1989 the Director, CMFRI made a visit to the Andaman and Nicobar Islands to make an on-the-spot study of the potentials and possibilities for marine fisheries development in the Exclusive Economic Zone (EEZ) of the Bay Islands. Special attention was paid to the requirements of CARI in marine fisheries research. The Director also met and discussed with senior policy and decision makers in the Andaman and Nicobar Administration. As a result, two scientific teams with specific objectives were constituted. This is the report of the first team

Feminist Thought in Short Stories by K. Alagirisamy

Tamil is the first language of human civilization. Among the languages of the world, Tamil language occupies a prime position and has its own uniqueness. Tamil language is considered to be the whole history of Tamils. In each period, different literatures appeared and illuminated Tamil. Literature renews itself from time to time. Various literatures appear as they evolve from one to the other. The charity of the Tamil artists who helped the development of these animals is commendable. Through his works, the creators have volunteered to build a new society where social evils have disappeared and been revived. Short stories have been widely read and researched in twentieth-century Tamil literature. The short story creator K. Alagirisamy stands for femininity and knows the problems of women and expresses them in his short stories. The research summary of this article is to explore and bring out the feminist ideas expressed in this way

Marine pearl production

Pearls are harvested manually. Oysters are opened and pearls are squeezed out. In case 9,500 reuse, the pearls are removed carefully by opening the pearl- sac through the gonad without damaging it. The harvested pearls are washed in distilled water polished in refined salt and again washed in distilled wate

Pearl culture

Pearl culture gives the highest gross income for unit area among aquaculture systems. The techniques developed by CMFRI to suit Indian condition have attracted the entrepreneurs to enter into the venture of pearl culture. The rate of return works out to more than 50%. The recent line of research on the onshore pearl oyster farming and pearl culture, can easily revolutionize the concept and this can be profitably taken up in the east and west coasts of India where prawn farming was successfully conducted. In this paper the cost of seed production and economics of pearl production is dealt with The possibilities of taking up production of seed of desired qualities through selective breeding, manipulation of conditions in the onshore tanks culture are counted as priorities. Black pearl production and farming and pearl culture in the natural beds are the other priorities

Effect of culture media and tissue extracts in the mantle explant culture of abalone, Haliotis varia Linnaeus

The study is aimed at developing appropriate media for the mantle explant culture of abalone Haliotis varia. The effect of different media viz., L-15, Ham's F12, M199 was studied in combination with 10% Fetal Calf Serum (FCS) and 10% tissue extracts of gonad, mantle and whole body of abalone, H. varia to understand cell behaviour, cell yield and cell adherence in mantle explant culture of H. varia. Cultures with L-15 media gave better cell yield and M199 promoted better cell adherence. Addition of mantle extract to all media enhanced the cell yield to a maximum followed by whole body extract. Addition of whole body extract facilitated in cell adherence followed by the addition of mantle extract

A report on window pane oyster fishery in Tuticorin bay

The window pane oyster (Placenta placenta) are fished regularly for pearls and shells from Kakinada Bay of Andhra Pradesh and Okhamandal Coast of Gulf of Kutch

Manual on Pearl Oyster Seed Production, Farming and Pearl Culture

The Central Marine Fisheries Research Institute has developed expertise on various marine fisheries and mariculture technologies over the past several years. Based on this expertise the Institute has been offering regular training courses to officials from State Governments, Universities, ICAR Institutes, Krishi Vigyan Kendras, training institutions, industry and progressive farmers on subjects like marine prawn hatchery, prawn farming, pearl oyster hatchery, pearl oyster culture, pearl culture, edible oyster hatchery, edible oyster farming, seaweed culture and utilisation, SCUBA diving, estimation of marine fish production and stock assessment. The Trainers' Training Centre (TTC) of the CMFRI, Cochin, established in the year 1983, has so far conducted 83 such trainings for 590 personnel from the various maritime states including Pondicherry, Lakshadweep and the Andaman & Nicobar Islands

A Hybrid Digital Watermarking Approach Using Wavelets and LSB

The present paper proposed a novel approach called Wavelet based Least Significant Bit Watermarking (WLSBWM) for high authentication, security and copyright protection. Alphabet Pattern (AP) approach is used to generate shuffled image in the first stage and Pell’s Cat Map (PCM) is used for providing more security and strong protection from attacks. PCM applied on each 5×5 sub images. A wavelet concept is used to reduce the dimensionality of the image until it equals to the size of the watermark image. Discrete Cosign Transform is applied in the first stage; later N level Discrete Wavelet Transform (DWT) is applied for reducing up to the size of the watermark image. The water mark image is inserted in LHn Sub band of the wavelet image using LSB concept. Simulation results show that the proposed technique produces better PSNR and similarity measure. The experimental results indicate that the present approach is more reliable and secure efficient.The robustness of the proposed scheme is evaluated against various image-processing attacks