Studies on pelagic shrimps in the deep scattering layer of the west coast of India (TH 100)

Karuppasamy, P K (2001) Studies on pelagic shrimps in the deep scattering layer of the west coast of India (TH 100). PhD thesis, Karnatak University, Dharwad.

[img]
Preview
PDF
29Mb

Abstract

Today, when so much is being said and written about our interests in the ocean, it is particularly important to retain our perspective. Of course, the present pattern is likely to change, although how rapidly or dramatically we do not know. What is certain is that we shall use the ocean more intensively and in a greater variety of ways. Our greatest need is to use it wisely. The general goal of ecological research to which marine biology makes an important contribution, is to achieve an understanding and to tum to our advantage all the biological processes that give our planet its special character. Marine biology is focussed on the problems of biological production, which are closely related to problems of production in the economic sense as well. Our most compelling interest is often narrower. It lies in ocean life as a renewable resource, primarily of protein-rich foods and food supplements for our domestic animals and to us and of secondary materials and drugs. At this point, it is time to inquire about the future expectations from the ocean which is or three dimensional environments provides protein rich seafoods alternate to agricultural products from land. Other than this, nonliving resources such as minerals, oil, medicinal properties of the various marine organisms etc. are resources we collect from the sea. The present harvest of marine living resources from the world oceans is about 87 million tonnes in 1996 (Anon., 1998). More than 90% of this harvest is finfishes: the rest consists of whales, crustaceans, molluscs and other invertebrates. It is now a common knowledge that fish is one of the few major foodstuffs showing an increase in global production that continues to exceed the growth rate of the human population. This increase has been accompanied by changing patterns of use. Although some products of high unit values that includes luxury foods, such as shellfish, have maintained or even enhanced their relative economic importance and the trend is that moderate catch is used directly for human consumption and the bulk is reduced to fishmeal for animal feed and manure. There are also large aggregations of pelagic animals that live further down and are associated particularly with the "Deep Scattering Layer" (DSL). the sound-reflecting stratum observed in all oceans which has vast potential to provide exploitable resources. 2

Item Type:Thesis (PhD)
Supervisor(s):Kusuma , Neelakantan
Uncontrolled Keywords:pelagic shrimps; deep scattering layer; west coast of India
Subjects:Theses
Crustacean Fisheries > Prawn and Prawn fisheries
Divisions:CMFRI-Cochin > Marine Capture > Crustacean Fisheries
ID Code:7160
Deposited By:Geetha P Mrs
Deposited On:28 Jan 2011 16:44
Last Modified:20 Jan 2014 14:20

Repository Staff Only: item control page