National Conference

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    FISH MUCUS - AN IDEAL ADHESIVE FOR BUILDING CONSTRUCTIONMr
    (Department of Biology, Gandhigram Rural University, Dindigul, Tamil Nadu, India, 2004-02-19) Natarajan G M; Bhuvaneshwari N; Palanisamy P; Esther Joice P; Sasikala G
    Fish skin contains a variety of humoral defense lysins which play an integral role in fish immunity and serve as the primary barrier between internal and external environment. This barrier consists of mucus and epidermal cell layers and contains a variety of active factors in the primary defense. Since fish are habitually surrounded by water, both the mucus and the active factors are no sooner secreted on the skin that dispensed into the surrounding water. The skin mucus lysins comprise bacteriolysins, proteolysins and haemolysins. The mucus is sticky and acts as a synthetic paste or adhesive. In the present investigation, an attempt has been made to explore the possibilities of using fish mucus as an adhesive in building construction activities. It is said that many of the old churches in Travancore – Cochin with arches and domes were built using Channastriata mucus. A normal method of preparing large quantities of mucus and mixing it with sand and bricks is outlined. A comparative study of the mucus secretion of the various air-breathing species like Clariasgariepnus, Anguilla bengalensis, Channastriata, C. maruilusandHeteropneustesfossilis reveals that Clariasgariepnus is an ideal candidate to obtain maximum quantity of mucus under laboratory conditions. Experiments with fish slime or mucus show that it is excellent in giving extra strength in the construction of big buildings.
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    ON THE BIMODAL RESPIRATION OF NOTOPTERUSNOTOPTERUS
    (Department of Biochemistry and Biotechnology, Avinashilingam Deemed University, Coimbatore, Tamil Nadu, India, 2002-12-12) Vijayalakshmi, P; Natarajan G M; Parthi, N; Esther Joice P; Jacintha, S; Mallikaraj D; Bhuvaneshwari, N; Sasikala G
    Notopterusnotopterus is a freshwater air-breathing fish distributed in various habitats in the Indian subcontinent. The fish presents a number of adaptations to its air-breathing habit. The fish is capable of living on land. However, the fish is a facultative air-breather. Under bimodal conditions, it extracted 57.7% of its total oxygen, requirement from water and 42.3% from air for respiratory purposes. The air/aquatic ratio was 0.73