Prospects for open sea cage farming in India

Aquaculture has been recognized as a sunrise industry, registering an average annual growth of about 9.2 % since 1970 in comparison to capture fisheries (1.4 %) and terrestrial farmed meat production ( 2.8%) (FAO, 2004). Globally, the annual value of farmed fish has crossed US $ 50 billion, Surprisingly, the bulk of the aquaculture production comes from the developing low income food deficit countrie

Book Review: Quantitative ecology and marine biology, by G J Bakus

In recent years, approach to marine community ecology has become empirical and conceptual. Terrestrial plant ecologists were the pioneers in the field of quantitative ecology and the application of their models in marine ecosystem analyses has thrown open a vast new field of interest to those marine biologists who are mathematically oriented

Indian marine fisheries - the road ahead

Globally, fish has been attracting increased attention not only as an item of connoisseur's delight and preferred food for health conscious elite, but also as a centre-stage of US$ 100 billion industry and a source of employment, livelihood and food security to several millions of poor people in the developing world especially in the Asian region which contributes 63.17 % (2003) of global fish production. Fish contributes 15 to 54 % of animal protein intake in Asian countrie

भारतीय जलकृषि मे उपयोग करनेवाले सूत्रित खाध्यों पर मौलिक अनुसंधन क्यों

बाद में जोड देंग

Overview of the Opportunities in Mariculture in India

India is one of the few countries in the tropical belt which has not adequately utilized the g>:eat opportunities provided by maricultural entrepreneurship. A cursory look at the statistics on the aquaculture production in India reveals interesting data. The area under shrimp farming extends to around 194,000 ha with an average annual production of over 100,000 tons. There are over 260 shrimp hatcheries with an installed capacity of over 11 billion larvae. Currently only 200 of these hatcheries are functional, producing about 7 billion larvae per annum. The feed mills number about 33 with an installed capacity of 150,000 tons. Aquaculture provides direct employment to over 0.3 million persons and ancilliary employment to around 0.7 million others. The maricultural production of shrimps during 2002 was about 115,000 tons and that of scampi through freshwater culture 30,000 tons (MPEDA). The share of culture in the total export of fishery products is around 58 %. Mariculture in India is presently targeted around shrimp culture only. Most of the shrimp farms (90%) have farm sizes below 2 ha. Farms of size 2 to 5 ha are about 6 % and large farms of sizes > 5 ha are only 4 %. The total production of farmed shrimp including scampi from India during the last year was about 145,000tons. The only remarkable shift in the trend was during the past couple of years when new initiatives in bivalve farming emerged as an alternative. During the last year about 1300 tons of marine g>:een mussels and over 350 tons of edible oysters were produced along the south west coast of India

Ecological studies on the Fauna Associated with Economic Seaweeds of South India-I. Species composition, feeding habits and interrelationships

A great deal of information is available on tbe fauna associated witb seaweeds of temperate waters (Wieser, 1952 for review; Cbapman.1955; Soutbward, 1958; Wieser, 1959; Sloane el. af., 1961; Fuse, 1962; Me Lean, 1962; Ledoyer, 1962, 1964, 1966; Obm. 1964; Glynn, 1965; Hagerman. 1966; Moore, 1971; Alcala el af., 1972: Mallav ... a, 1976). There are many scattered references to tbe associations of animals to marine algae from tbe Indian coasts. However, in depth studies on tbe nature of relationsbips, distribution and abundance of animal populations on seaweeds are lacking except for a few recent studios (Josepb, 1972; Sarma and Ganapati, 1972; Sanna, 1974). The present study was undertaken during 1968-71 to ascertain tbe species composition, feeding bablts and inter-relationsbips in tbe dominant groups of animal. associated with economic seaweeds of South India

Ecological studies on the Fauna Associated with Economic Seaweeds of South India.3. Food preferences of selected Algivorous Gastropods

The importance of algivorous animals in the ecology of economic seaweeds has been recognised by many workers (Tilden, 1927; Leighton, 1960; Chapman, 1962; North, 1962, 1963; Boney. 1966). In recent years many studies have been made to ascertain the food and feeding habits of major algivores, the important among which are by Barkman ( 1955), van Dongen (1956), Bakker (1959), Satio and Nakamura (1961). Leighton and Boolootian (1963), Leighton (1966), Paine (1963) and Paine and Vadas (1969). In order to study the role of algivores in the ecology of cultivatable marine algae and to ascertain the nature of discri_ mination in the choice of algal food by them, a study was undertaken during 1968- '71 at tbe Marine Algal Researcb Station, Mandapam. This paper presents tbe findings pertaining to the cbief algivorous gastropods in tbe Gulf of Mannar and Palk Bay region

Mussel and oyster farming: a small step in Indian mariculture but a giant leap in coastal rural livelihood

The low cost user-friendly bivalve mariculture practices developed and field tested by the Central Marine Fisheries Research Institute in the estuaries and coastal regions have become an opportunity for earning livelihood as a seasonal avocation among the rural people

Ecological Studies on the Fauna Associated with Economic Seaweeds of South India.2. Distribution in space and time

Quantitative studies are of great value in ecological investigations as the numerical, volumeteric or gravimetric estimation, of the popul ations provide estimates of productivity and standing crop and enable numbers and weight, of animals in a given habitat to be compared both in time and in space. Colman (1940) was the first to estimate the numerical abundance of the fauna inhabiting intertidal sea weeds. Later. many attempts have been made by various workers (Wieser, 1952, 1959; Chapman, 1955; Glynn, 1965; Hagerman, 1966; Jansson, 1967; Moore, 1971) to study the algal communities in the temperate waters. From the Indian coasts, the only study of similar nature is by Sarma and Ganapati (1972) who studied the numerical d,istribution of phytal fauna on 13 species of seaweeds from the intertidal regions of Visakhapatnam coast. The spatial and temporal distribution of the macrofauna inhabiting intertidal seaweeds at Mandapam Camp is discussed in this paper

Samudravijnanathinte kalavara: CMFRI (Malayalam)

CMFR