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

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%)

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

Role of Digital Libraries in E-learning

The use of sophisticated technologies such as computer and tele-communication are bringing classroom to the home and opening access to education for those who never entered or are unable to enter the portals of University. E-learning is an integrated and continuous approach to build knowledge skills of competitive through web enabled technologies. The digital libraries have got a significant role to play to assist effective e-learning process. Effective learning is having advantages in delivering the right content to the right person at the right time. The paper discusses need and importance of e- learning and the role of digital libraries in E-learning process

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

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

Qualitative assay of C-reactive proteins in acute coronary syndromes

Introduction: Acute coronary syndromes (ACS) are the major causes of mortality in coronary care units. Inflammation plays an important role in ACS.  C-reactive protein (CRP) is one of the inflammatory markers, which plays a key role in the pathogenesis. This study aimed at assessing C-reactive protein levels in acute coronary syndromes, and determining its significance in prognosis. Methods: Fifty patients admitted with the diagnosis of ACS were included in the study. Qualitative C - reactive protein assay was done at the time of admission. Patients were followed up for the complications till discharge. Results: Age group between 41 to 70 years constituted 40 (80%) patients. Out of 50 patients with acute coronary syndromes 36 patients had elevated CRP. Thirty patients (83.33%) of them met with complications. Of the 14 patients with low CRP only two (14.28%) patients met with the complications. Conclusions: Qualitative plasma CRP estimation gives valuable prognostic information in acute coronary syndromes

Spiral Magnets as Gapless Mott Insulators

In the large $U$ limit, the ground state of the half-filled, nearest-neighbor Hubbard model on the triangular lattice is the three-sublattice antiferromagnet. In sharp contrast with the square-lattice case, where transverse spin-waves and charge excitations remain decoupled to all orders in $t/U$, it is shown that beyond leading order in $t/U$ the three Goldstone modes on the triangular lattice are a linear combination of spin and charge. This leads to non-vanishing conductivity at any finite frequency, even though the magnet remains insulating at zero frequency. More generally, non-collinear spin order should lead to such gapless insulating behavior.Comment: 10 pages, REVTEX 3.0, 3 uuencoded postscript figures, CRPS-94-0