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Influence of salinity on the life table demography of a rare Cladocera Latonopsis australis

DRS at CSIR-National Institute of Oceanography

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Title Influence of salinity on the life table demography of a rare Cladocera Latonopsis australis
 
Creator Haridevan, G.
Jyothibabu, R.
Arunpandi, N.
Jagadeesan, L.
Biju, A.
 
Subject AQUATIC COMMUNITIES::Zooplankton
CRUSTACEANS::Reproduction and development
AQUATIC ECOLOGY, PRODUCTIVITY::Environmental effects
POPULATION STUDIES::Age and growth
 
Description Latonopsis australis is a rare Cladocera inhabiting the entire stretch of the Cochin backwaters, the largest monsoonal estuary along the West Coast of India, during the summer monsoon, but restricted to the upper reaches during the non-monsoon periods. Here, we present the results of an experimental study, which assessed the influence of salinity on the life table demography of the species at different salinity levels. The life table demographic parameters such as net reproduction rate, generation time, intrinsic growth rate, gross reproductive rate, and survivorship of the species were measured in different salinities ranging from freshwater to mesohaline levels (salinity 14). The study showed that higher salinity had a significant negative effect on all life table demography parameters of the species, whereas freshwater to low saline conditions (salinity up to 8) favored the survivorship, life expectancy, net production, and growth rate. It was also noticed that salinity above 8 caused a significant decrease in the survivorship, life expectancy, and reproduction rate of the species, which clearly explained the seasonal distribution pattern of the species in the Cochin backwaters. The present study suggests salinity 2 to 6 as the optimum range for the large-scale production of L. australis for purposes like live feed in aquaculture
 
Date 2015-11-02T07:03:37Z
2015-11-02T07:03:37Z
2015
 
Type Journal Article
 
Identifier Environmental Monitoring and Assessment, vol.187(10); 2015; no.643 doi: 10.1007/s10661-015-4849-z
http://drs.nio.org/drs/handle/2264/4841
 
Language en
 
Rights An edited version of this paper was published by Springer. This paper is for R & D purpose and Copyright [2015] Springer.
 
Publisher Springer