Effect of low salinity on feeding and growth of Babylonia aerolata

This paper reported the experiment on the intake,growth and survival of Babylonia aerolata(mean body weight=0.27g,mean shell length=11.2mm) fed with Loligo oshimai under different salinity in small water volume conditions.The results showed that optimat salinity for B.aerolata was higher than 21 and the survival salinity was higher than 15.In the salinity range from 21 to 33,the daily rate of feeding by B.aerolata was 10.2%～11.6%,the daily growth in body weight and in shell length were 11.3～12.0mg and 123.1～141.9μm respectively.When the salinity decreased gradually to 15,the intake and the growth of B.aerolata were notably influenced.Assigning the salinity 29 as the starting and end point of salinity which suddenly changed,the lowst salinity was higher than 21 and 18 respectively,in which the intake and the growth of B.aerolata were not influenced by the low salinity,when the salinity suddenly decreased from 29 to a lower salinity and suddenly increased from a lower salinity to 29.