Mangroves and its importance to Fisheries

Mangroves act as a buffer zone between sea and shore, protecting the shore from erosion and also plays a valuable role as a shield from disasters tike cyclone and tsunami. The ecological significance of mangroves in many tropical countries has been qualitatively well documented and recognized. Mangroves are the breeding and nursery grounds fo r many wildlife species including many fishes, crustaceans and mollusc population. Thus the habitat loss of this unique ecosystem has direct repercussions in the fishery of the regio

Present status of mussel farming- Winter School on Recent Advances in Breeding and Larviculture of Marine Finfish and Shellfish

The green mussel (Perna viridis) is also referred as the green lipped mussel or the Asian green mussel. The shell of P.viridis tapers to a sharp, down turned beak and has a periostracum that is dark green to dark brownish green. The ventral margin of the shell is straight or weakly concave. The beak has interlocking teeth, one in the right valve and two in the left. The wavy posterior end of the pallial line and the large kidney-shaped adductor muscle are diagnostic features of this species.The native range of the green mussel is along the Indian coast and throughout the Indo- Pacific. It occurs naturally and is widely distributed along the intertidal coasts of Indi

Electrochemical oxidation of ethanol at ruthenium at oxide coated titanium electrode

Electrochemical oxidation of ethanol in 0.5 M sulphuric acid at ruthenium oxide coated titanium electrode was studied. Results of galvanostatic polarization and chronopotentiometric studies are reported. The data indicate the process to be adsorption controlled and accordingly a probable mechanism is propose

सतही समुद्री पानी तापमान परिवर्तन से भारतीय बाँगडों का फैलाव

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Harvesting in situ microalgal feed by enriching seawater

Mixed populations of marine natural microalgae were continuously cultured at high density through seawater enrichment with the Walne’s medium, at the marine hatchery complex of Calicut Research Centre of CMFRI. Freshly collected seawater from Konnad beach, decanted after an hour of sedimentation to remove sand and debris, was transferred to big transparent containers. Seawater was enriched with Walne’s medium at the rate of 200 ml solution A, 100 ml solution B and 50 ml of vitamins for 100 l seawater

Mangroves of Kerala

Mangroves plants are salt tolerant plants of tropical and subtropical intertidal regions of the world. These highly adapted plants have many peculiar features than their terrestrial and aquatic counterparts. The word ‘mangrove’ can also be used to describe the habitat as well as the plants. Mangroves are distributed in the tropical countries of the world. The mangrove ecosystem covers only 0,037 per cent of the world's surface or 0.12 per cent of the Earth’s land are

Shellfish poisoning

Certain dinoflagellales, diatoms and cyanobacteria produce biotoxins . These marine toxins are water soluble and heat stable. Shellfishes being filter feeders tend to accumulate these toxins. After consuming such bivalves ingested with toxin bearing planktons, human toxicity and mortality has been reported. While we aim for large scale mariculture o f marine bivalve mollusks, the sanitary conditions in which they grow and their taste quality must be improved and protected. Mariculture sites should be protected from dumping anthropogenic wastes and regular monitoring of water quality is very much essential. Stray numbers of toxin bearing microalgae as normally found in seawater will not be harmful and it becomes when they outbreak and form blooms

Green tide and fish mortality along Calicut coast

Intense greenish brown coloured bloom was noticed in the Arabian Sea along the Calicut coast, on 27.09.2011, which lasted up to 17.10.2011 (Fig. 1). The blooming organism was identified as the “green tide” forming alga, Chattonella marina (Subrahmanyan) Hara & Chihara,1982. Fresh samples when observed under microscope which exhibited active movement aided by flagella and had many bright green disc shaped chromatophores distributed throughout the cell (Fig. 2). The samples when preserved in formalin, formed a jelly like mass

गुजरात में दायित्वपूर्ण समुद्री मात्स्यिकी प्रबन्धन के विकास की रणनीतियाँ

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गुजरात की मात्स्यिकी संपदाएं और प्रबंधन केलिए विकल्प

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