Include references

"Effect of salinity and temperature on the growth of Artemia franciscana and Artemia parthenogenetica were investigated under laboratory conditions at different levels of salinities tested viz. 30, 50, 75,100, 125, 150 and 200 ppt. Among the different salinities tested Artemia franciscana and A. parthenogenetica were observed to attain the highest growth at 150 and 125 ppt respectively. In the laboratory both the strains of Artemia were grown at 28, 30, and 32�C to determine the optimal temperature that would accelerate the growth. Among the three levels of temperature tested, the highest growth was registered in both the strains, at 32�C. Among the two types of fed viz. rice bran and algal powder experimented, rice bran was found to enhance the growth of both the strains significantly. Culture of Artemia franciscana was also undertaken in an experimental plot i.e. at a deepened salt-pan at Tuticorin for a period of 35 days. The salinity of this culture system ranged between 75.45 and 152.64 ppt and pH fluctuated between 8.1 and 8.4. The oxygen values of the water column were always above 2.85 ml/l and the total alkalinity of the salt-pan was as high as 135.54ppm. Ammonia was found to dominate over other nitrogenous nutrients and the ratio of ammonia nitrogen to phosphorus ranged between 4.92:1 and 21.1:1. The ratio of available nitrogen to phosphorus was higher than that of ammonia nitrogen to phosphorus. Though the net primary production was low (17.98 to 111.26 mg C/m3/h), the presence of the seaweed Gracilleria sp was found to be sufficient to promote the growth of A. franciscana. In the field also this strain attained maturity after 18 days and the cyst production recorded during the present investigation was to the tune of 0.478 kg wet weight/ha/day. The present study offers much scope for culturing of Artemia franciscana under the meteorological conditions operative in the southern part of India."