Now showing items 1-3 of 3
| Abstract: | Mackerel fishery at many places in the country including Cochin as well as at all—India level, besides its seasonal changes to have long-term flucations apparently evincing a ten-year cycle. Published literature on the fishery and biology of mackerel at many places are available. But attempts on population studies and assessment of stock are scanty. The researchers attention at this juncture turned to investigations on population dynamics of the mackerel .On account of the long-term Fluctuations in the fishery, it was felt desirable to have data For a number of years together to facilitate adequate coverage of a unit of time in the 10-year cycle. Investigations on length weight relationships for 16 seasons were hence carried out. This thesis is written eection'by section embodying‘ the results and_findings of the work carried out under different subject areas. It contains sections on identity of the species, information on its spatial and temporal distribution along the Indian coast, study on length-weight relationships, growth and age determination, population studies and stock assessment, and discussions.This dissertation is the outcome of the works of the candidate on the Indian mackerel. The work, however is based on exploited resource of the inshore waters. In the course of this analysis, lacunae existing in the investigations on the Indian mackerel are therefore identified and presented For future work |
| Description: | Central Marine Fisheries Research Institute |
| URI: | http://dyuthi.cusat.ac.in/purl/3274 |
| Files | Size |
|---|---|
| Dyuthi-T1248.pdf | (5.744Mb) |
| Abstract: | In the present study, fifteen typee of diseases occurring in twenty one species of finfishes end shellfishes are documented and the causes studied. All these are being reported from India for the first time which adds considerably to our existinq knowledge on the subject.In fact, the candidate's studies embodied in this Thesis has also an applied significance aimed at the proper management_of finfish and shellfish aquaculture systems in this country.The thesis is presented in seven main chapters. |
| Description: | Central Marine Fisheries Research Institute |
| URI: | http://dyuthi.cusat.ac.in/purl/3650 |
| Files | Size |
|---|---|
| Dyuthi-T1624.pdf | (10.22Mb) |
| Abstract: | The situation in the backwaters of Kerala, which reportedly had about 70,000 ha of mangroves, is unique in the sense that there has been a total conversion to other uses such as paddy cultivation, coconut plantation, aquaculture, harbour development and urban development In order to save and restore what is left over national and international organisations are mounting pressure on scientists and policy makers to work out ways and means conserving and managing the mangrove ecosystems. In this context, it has been observed in recent years that mangrove vegetation has remained intact in isolated pockets of undisturbed areas in the Cochin estuarine system and also that there is resurgence of mangroves in areas of accretion and silting. The candidate took up the present study with a view to make an inventory of the existing mangrove locations, the areas of resurgence, species composition, zonation and other ecological parameters to understand their dynamism and to suggest a mangement plan for this important coastal ecosystem |
| Description: | School Of Marine Sciences Cochin University Of Science And Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3674 |
| Files | Size |
|---|---|
| Dyuthi-T1640.pdf | (5.624Mb) |
Now showing items 1-3 of 3
Dyuthi Digital Repository Copyright © 2007-2011 Cochin University of Science and Technology. Items in Dyuthi are protected by copyright, with all rights reserved, unless otherwise indicated.