1,089 research outputs found
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
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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
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
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
Clash between purse seine and artisanal fishermen at cochin
The introduction of purse seining in Kerala in the traditional grounds has been vehemently opposed by the indigenous fishermen and has, on many occasions, resulted in skirmishes between the two from the very beginning. This articles discusses about the conflict between purse seine and artisanal fishermen and suggestions to minimize this conflicts are specified
On the conservation and management of marine turtles
There are five species of marine turtles
occurring in and around Mandapam -
Rameswaram; both in the Gulf of Mannar and
Palk Bay regions. They are incidentally caught
live in trawl net, shore-seine, drift-gill net and
bottom-set gill net operations in this area. They
are in great demand in the rural sector. Though,
the fishermen are aware that these endangered
animals are protected, often the profit motive
make them to sell these turtles. Whenever, any
incidence is brought to the notice of the Regional
Centre of the Institute, attempts have been made
to rescue and release them back to the sea as a
conservation measure
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