65 research outputs found

    Environmental stress induced fish diseases

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    Diseases have been known to occur among fishes from time immemoria

    My vision on Indian fisheries of the 21st century

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    In evaluating important producers in the next decade, the FAO predicts that India, China and Indonesia will be the countries with largest potential all over the world. It has been found that small and marginal land owners are the most successful. So a modified and indigenised technology utilized by local land owners would help to focus attention at the micro level to increased productivity on the whol

    Aquaranching

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    Aquaranching is the art of reaping richer crop of shrimp or other aquatic organisms from open waters

    Morphometry and length weight relationship of the Catfishes Arius caelatus (Valenciennes, 1840) and Arius thalassinus (Ruppell, 1837) off Mumbai, Veraval and Vishakhapatanam coasts

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    The catfishes, Arius caelatus and Arius thalassinus have been compared morphometrically for seven characters with reference to fork length from Mumbai, Veraval, Vishakhapatnam and Veraval coasts respectively. For Arius caelatus, significant differences were found between the sexes at the same locality, within the same sexes at different localities and between both sexes combined from Mumbai and Veraval four out of seven characters were investigated. Similarly, for Arius thalassinus, significant differences were noticed between and within the sexes at the same locality and when the sexes were combined, almost all the characters showed highly significant differences between the Veraval and Vishakhapatnam populations, which have been attributed to separation of stocks. The sex specific length weight relationships between the sexes as well as locations were not significant for A. caelatus, hence a relation common to both sexes and regions was established. But A. thalassinus showed highly significant differences, in respect of sexes as well as locations. Therefore, separate relationships were obtained for sexes and locations for the latter

    Information and communication technologies(ICT)s for women in agriculture

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    There has hen world-wide recognition of the importance of ICTs as tools to promote women's empowerment. rights and dignity and full participation In the Information society by providing immense possibilities for enhancing women's participation in socio-economic and political development for poverty reduction, improve quality of life and achieve gender equality. mere had been many successful applications of ICTs which Included the internet and/or the gamut of technologies such as community radios. tele-centres information kiosks. internet radio. mobile phones. Local Area Network and WAP applications for rural women all over the world and in the developing countries such as India (MSSRF's rural knowledge center in Pondicherry

    Occurrence of pinjalo snapper, Pinjalo pinjalo in the fishery of Maharashtra

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    On 06.12.03, ten numbers of pinjalo snapper. Pinjalo pinjalo were landed in the trawl catches at the New Ferry Wharf,Mumbai. Later two more numbers were recorded from Sassoon Dock, Mumbai on 11.12.03. The depth of fishing was 40-60 m in the fishing grounds off southwest of Mumabi

    Seasonal abundance of juvenile threadfin breams from Mumbai waters

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    A very high catch of juvenile threadfin breams was observed at New Ferry Wharf, Mumbai in March 2007 by shrimp trawlers. The fishing was at about 60-80m depth to the southwest direction of Mumbai (off Ratnagiri) and the fishing duration was for a period of seven days. The total estimated monthly catch of threadfin breams in March '07 was 186.3t. The seasonal abundance of threadfin breams over a period of 3 years from 2004-2006 showed that the maximum catch was during March-April with a smaller peak during September-October

    Report on a baleen whale stranded at Colaba, Mumbai

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    The carcass of a baleen whale was washed ashore on the Pilot Bunder beach at Colaba, Mumbai at 11 P.M. on 14.02.06 in a highly putrefied condition. The carcass measured approximately 9.12 m and weighed about 15 tons

    Increasing trend of Epinephelus diacanthus landing by trawlers at Mumbai.

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    Epinephelus diacanthus, locally known as "hekru" has assumed commercial importance in view of their good quality meat and greater consumer demand in local and export markets both in live as well as frozen forms. Groupers constitute an important component of demersal fishery resource of India and form 2% of total marine landings in India

    Gonadal Assessment of Picnic Sea Bream Acanthopagrus berda (Forsskål 1775), a Potential Aquaculture Candidate for Indian Waters

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    Gonadal assessment of Acanthopagrus berda (Forsskål 1775), a commercially and recreationally important fish from Indian waters, was studied by collecting 250 fishes from the Korapuzha estuary, Calicut, Kerala using cast net during December 2015 to January 2016. External morphology of the gonads reveals that A. berda is bisexual (with ovo-testis) in nature with the ovarian lobe in the mid-dorsal region of the abdominal cavity and the testicular lobe as a band along the ventro-lateral wall with a major portion running along the extreme posterior region of the gonad. Males were dominant in lower length classes (17–23 cm) while females dominated in upper length classes (24–43 cm), confirming protandrous hermaphroditism in the species. Gonado-somatic index (GSI) was significantly higher (P<0.05) for the females. Males and transitional groups were showing almost similar GSI. External morphological and histological evaluation of the gonads of A. berda during the 2-month study revealed the presence of different developmental stages such as matured testis with oozing milt, an intermediate gonad structure with an anterior thin ovary-like structure and a posterior thick testis-like morphology indicating a transitional ovo-testis, maturing ovary and matured ovary. The simultaneous availability of milt oozing males and matured females from the wild indicates the opportunity for development of captive breeding, seed production and hatchery technology for this important commercial food fish
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