http://nopr.niscpr.res.in/handle/123456789/37465 2026-10-10T00:11:28Z 2026-10-10T00:11:28Z Purandara, B K http://nopr.niscpr.res.in/handle/123456789/37764 2016-11-28T11:35:55Z 1993-03-01T00:00:00Z

Title: Texture and mineralogy of Periyar river (southwest coast of India) sediments Authors: Purandara, B K Abstract: Bed sediments from the Periyar river were collected and analysed to understand the sedimentological characteristics. Grain size of the Periyar sediment varies from the size of a granule to that of a medium clay. Majority of the sediments are poorly sorted, positively skewed and platy to mesokurtic in nature. Heavy minerals are concentrated in medium fraction (125 mum). Major heavy minerals observed are opaques followed by hornblende, hypersthene, mica and sillimanite. However, the sediments in the downstream shows an additional input when compared to the upstream sediments. A wide variation in the upstream and downstream sediments are attributed to the multiple source of derivation and varying energy conditions during the deposition. Page(s): 78-80

1993-03-01T00:00:00Z Mishra, Sujata Panda, D Panigrahy, R C http://nopr.niscpr.res.in/handle/123456789/37763 2016-11-28T11:33:44Z 1993-03-01T00:00:00Z

Title: Physico-chemical characteristics of the Bahuda estuary (Orissa), east coast of India Authors: Mishra, Sujata; Panda, D; Panigrahy, R C Abstract: All the physico-chemical parameters [transparency, temperature, salinity, dissolved oxygen and nutrients (nitrite, nitrate, phosphate and silicate)] showed well marked seasonal as well as spatial variations being influenced by monsoon cycle and tidal rhythm. The estuary remained marine dominated during premonsoon (Feb.-June) season, whereas freshwater dominance prevailed during monsoon (July-Sept). A prominent vertical salinity gradient was noticed during monsoon season. Page(s): 75-77

1993-03-01T00:00:00Z Rivonkar, C U Sreepada, R A Parulekar, A H http://nopr.niscpr.res.in/handle/123456789/37762 2016-11-28T11:30:19Z 1993-03-01T00:00:00Z

Title: Growth parameters in the cultured green mussel Perna viridis L. from the Zuari estuary, Goa Authors: Rivonkar, C U; Sreepada, R A; Parulekar, A H Abstract: Growth parameters for both length and weight were estimated in the raft-grown population of Perna viridis. The asymptotic length (L(infinity)) and weight (W(infinity)) were computed to be 85 mm and 34.37 g respectively. Theoretical length and weight computed by applying Von Bertalanffy's equation did not show significant deviation from the observed values. Specific growth rate (SGR) was calculated, by using the values of shell length, varied from 0.74 to 138.52%. SGR maxima was observed during the initial phase of growth implying that it was mainly due to high rate of metabolism. Growth expressed in terms of shell length showed significant positive correlation with chl-a and dissolved oxygen (DO) concentration, whereas, salinity showed inverse relationship. In contrast, growth expressed in terms of weight was significantly influenced by chl-a and DO. It was also observed that chl-a either singly or in combination with particulate organic matter had significant effect on growth. Page(s): 72-74

1993-03-01T00:00:00Z Sanjeev, S Stephen, Jose http://nopr.niscpr.res.in/handle/123456789/37761 2016-11-28T11:24:29Z 1993-03-01T00:00:00Z

Title: Incidence of Vibrio-parahaemolyticus in fish and shellfish marketed in Cochin Authors: Sanjeev, S; Stephen, Jose Abstract: Fresh finfish and shellfish of marine and brackish water origin, collected from the markets situated in and around Cochin, were examined for the incidence of Vibrio parahaemolyticus. This bacterium was isolated from 51.26% of finfish and 78.57% of shellfish. All the oyster samples were found to be positive for the presence of V. parahaemolyticus. Page(s): 70-71

1993-03-01T00:00:00Z