Record Details

Fluctuations in mackerel landings at Calicut in relation to hydrographical factors

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Fluctuations in mackerel landings
at Calicut in relation to
hydrographical factors
Not Available
 
Creator Pradhan,L B
Reddy,C V Gangadhara
 
Subject mackerel landing
Calicut
hydrographical factors
 
Description Not Available
Of the hydrographical factors, temperature and salinity have been found
to exert a profound influence on the fish throughout its life-cycle. The
tolerance range of the hydrographical factors of fishes is characteristic of the
species. Even within the same species, the degree of tolerance may vary
slightly, depending upon the age of fish; the degree of tolerance, however,
increases with the growth of fish. Chidambaram (1950), has shown that
sardine catches are maximum when the hydrographical factors are within
certain limits, during the season. Pradhan (1956) remarks that the entire
stock of mackerel, impounded near the mouth of Kali River is apt to die
from a sudden fall in salinity, due to the influx of freshwater from the river.
Similar observations were made by Hubbs (1948), Jenson (1930), Radovich
(1961), Tanoue and Enami (1954), Tonoue (1958 and 1960) and Walford
(1946). Hubbs (loc. cit.) showed that seasonal migrations of fish of the west
coast of United States are controlled by temperature.
Not Available
 
Date 2021-08-09T06:21:50Z
2021-08-09T06:21:50Z
1962
 
Type article
Article
 
Identifier Not Available
Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/53777
 
Language English
 
Relation Not Available
Not Available
 
Publisher CMFRI/ICAR