Trends in World Sardine Fisheries and India's Status

The sardines contribute to a luaative fishery along the Indian coast. All the species that belongs to the genus Sardinella other than oil sardine are called lesser sardines or other sardines, Out of 3.57 lakh tonnes of sardines landed in India during 1997-01, the oil sardine formed 2.56 lakh tonnes (72%) and the lesser sardines 98.8 thousand tonnes (28%)

Mesopelagic fishes from equatorial waters contiguous to Indian EEZ

Observations on the mesopelagic fishes taken by mid water trawl in the equatorial region (lat. 03°S- 03°N to long. 76°- 86°E) are presented. The trawling operations were carried out at 12 stations at a depth range of 40-200 m where the station depth varied from 2760-3600 m. The total catch from these stations was 156.6 kg at a catch per hour of 13.1 kg. The average catch per hour was 6.5 kg from the northern side of the equator compared to a higher value of 15.7 kg recorded from the southern side of the equator. Out of a variety of mesopelagic fishes caught, the myctophids constituted 61.3 per cent and the most dominant species were Diaphus ejfulgens, Triphoturus nigrescens, Symbolophorus evermanni and Lampanyctus pusillus. Among the rest of the mesopelagic fishes Cubiceps natalensis was the dominant species. The species and size composition of the major "-onstituents are given. The need for target oriented fishing for the economic utihsation also is discussed

भारत की अर्थव्यवस्था में समुद्री मात्स्यिकी का योगदान

भारत की अर्थव्यवस्था में समुद्री मात्स्यिकी का योगदा

Morphometric and meristic characters of fishes

Both from the taxonomic as well as the management point of view, a correct identification of marine fishes is important. The Folk taxonomies that developed in earlier times contained 250 to 800 kinds of animals. The invention of printing in the fifteenth century and world explorations have made: expansion of taxonomy both possible and inevitable. A number of attempts to classify animals were made, but were limited in scope until Linnaeus intro duced the binomial nomenclature in the eighteenth century. He has recognised species as the basic unit in nature. This meant that it is necessary to describe only one individual to know of an entire species

Determination of the maturity stages of marine fishes

Determination of the maturity stages of marine fishe

The Indian oil sardine

The Indian oil sardine, Sardinella longiceps Val, supports a neritic pelagic fishery contributing 2 to 33 % of the annual marine fish production in India. Though distributed all along the Indian coast the species sustains a commercial fishery of high magnitude along the coasts of Kerala, Karnataka , Goa and southern part oJ Maharashtra. During the last fifty years the annual all India production oscillated between 14.000 t in 1952 to 3 lakh t during 1968. Presently the west coast indicates a declining trend compared to an ascending pattern along the east coasl. The production from east coast surpassed that of the west coast contributing 52% of the all India production of 2.03 lakh t in 1998. The fishery along the west coast is known for its fiuctuating nature. Further, the species indicates a cyclic pattern of abundance. A variety of traditional gears were engaged in exploiting the resource till the introduction of modern and sophisticated gear like the purse seines in the late seventies and the ring seines in the late eighties. In fact oil sardine is one among the few species that have ever remained a subject matter of intensive research. The focus of this compilation is to present a comprehensive picture of the Indian oil sardine, its fishery, biology, stock, future prospects of exploitation and management measures needed for yield optimisation

Evaluation of the morphometric and meristic characters of fishes

To determine the body proportions, to prepare adult skeleton, to familiarise with staining technique for small specimens and to count vertebrae, spines and ray

Study of the ichthyofauna of the locality of work

To study the fish fauna at two centres, Mandapam and Pamban by making collections there; to study the characteristic features of various groups; and to identify the important species with the aid of literature (both in the field and in the laboratory

तारली और मलबार सोल के स्टाँक पर बारिश का प्रभाव

कृपया पूरा लेखा पढ

Age and growth of Malabar sole Cynoglossus macrostomus Norman off Kerala Coast

The age and growth of the Malabar sole, Cynogl- mocmtamcs Norman occurring along the coastal seas off Kerala were studied. The length frequency studies indicated that the fish attained 114.0 mm, 136.5 mm, 1525 mm and 159.5 mm at the end of 1 to 4 years. The growth rings on scales showed that the fish attained 118.7 mm, 134.8 mm and 150.3 mm when I to 111 rings are formed on scales. The time of formation of &he rinp on scales was found to be during October-December and February-April. The growth parameters were determined by the von Bertalanffy growth formula, Ford-Walford graph and by the Gulland and Holt plot The values obtained were Loo = 166 mm and K = 0.714lyear