Book Review: Threatened fishes of India

The book 'Threatened fishes of India is the proceedings of the National seminar on Endangered Fishes of India held at Allahabad on 25th and 26th April 992 Thebook provides a lot of informatlon and also points out the lacunae in information with respect to the endangered fishes of India, both inland and marine

Of boundaries, overlaps and variability in LMEs the case of Bay of Bengal

The paper examines the influence of localized studies in enforcing arbitrary boundaries in the ecosystem" How the proliferation of studies in watertight compartments would make the boundaries more rigid and unbreakable is explained. Inadequate attention to overlap of communities and phenomena has been identified as an inevitable outcome of rigid boundary concepts. The issues related to the variability in the system and its intluence on rhe components often remain unnoticed or unresolved because of the limits of perception imposed by the boundaries" Over viewing the global trend, an approach to study the Bay of Bengal as a Large Marine Ecosystem (LME) is suggested

On the Economics of Subsidies with a special note on fuel (HSO)subsidy for deepsea fishing vessels

Subsidy is considered as negative tax in economic parlance. As tax imposed on a given product discourages (or is expected so) its production and consumption, a subsidy produces a reverse effect. Subsidy is a transfer payment. Hence it is not included in national product or income. But as far as expenditure is concerned, it becomes a part and parcel of the sources of financs to be spent on goods and services produced

Simple model for predicting upwelling status along Visakhapatnam Coast

The variations in water mass characteristics of temperature, salinity and density over 12 year period (1986-1997) from a near-shore station are presented to delineate the phenomenon of upwelling off Visakhapatnam. The spatial variation in the parameters during upwelling months for a limited period was examined to justify the selection of a near-shore station for predicting the status of upwelling. A simple model to predict upwelling status based on Knudsen's hydrographic calculations and La Fond's classification of water masses was constructed and the algorithm presented. The utility of the model is briefly mentioned

Manning Fisheries Sector – The Need For A Paradigm Shift

India produced about 8 million ton of fi sh in recent � mes and became the third largest producer in the world. The country ranks second in aquaculture produc� on. India’s seafood exports crossed 800 thousand ton during 2010-11 fetching about ` 12000 crore in foreign exchange. The fi shery products export exceeded all other agricultural commodities. The country is poised to achieve the projected demand of 16 million t produc� on by the year 2025

Relevance of social audit in aquaculture Industry

Coastal aquaculture in our country especially in Andhra Pradesh and Tamilnadu, witnessed an unplanned growth in a very short span of time. The consequences of this unplanned expansion mani fested in the form of a variety of environmental and social problems similar to those experienced in some of the South-east Asian countries

Plankton - Methods for study

Standard plankton net is the most commonly used apparatus for collection of plankton (IOE- Standard net has 1m2 mouth and mesh width of 300 μm). It comprises a cone of bolting silk (or equivalent material) mounted on a ring or hoo p to which are attached three thin rope bridles spliced to a small ring by means of which the net can be shackled to a towing rope or warp (Fig.1). A weight is attached to the warp to facilitate sinking of the net to the required depth and to keep horizontal opening. Horizontal or oblique haul is commonly employed though vertical haul can also be made as desired with suitable change in the attachment of weight

Frog Culture: A Big Leap Needed

Though the croak-music of frogs has long back subsided in the waterbodies of our countryside, we hear now and then some noise about frogs made by seafood exporters. A great majority of the exporters still find it difficult to understand the under which catching and exporting of frog was banned in the country

Macrobenthos - Methods for Study

The bottom fauna or benthos forms an important link in the food web of the aquatic ecosystems. Bottom dwelling fishes and crustaceans feed mainly on the benthic organisms and hence the abundance of benthic fauna is a major factor deciding the fishery potential of watery body. In recent years, long-term works on benthic communities has been gaining importance in pollution studies and assessment of ecosystem health. Therefore, study of the qualitative and quantitative aspects of benthos is very important in mangrove ecosystem biodviersity determination

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