Abstract: Taking the newly hatched Sepiella maindroni juveniles at test materials, this paper studied the impacts of starvation on the survival rate, behaviors, digestive enzyme activities, and fatty acid composition, and the effects of re-feeding after starvation on the survival rate and growth of the juveniles. With the increasing duration of starvation, the survival rate, body shape, and behaviors deteriorated significantly, and died completely on the 7th day of starvation.  The pepsin activity decreased to the minimum (0.23±0.04 U·mg^-1·prot^-1) whereas the trypsin activity increased to the maximum (737.30±26.26 U·mg^-1·prot^-1) on the 5th day of starvation, and the amylase activity and lipase activity decreased to the minimum (13.93±2.00 U·g^-1·prot^-1 and 17.46±0.79 U·g^-1·prot^-1) on the 5th day and 2nd day, respectively. Under starvation, the consumed fatty acids in the juveniles themselves were in sequence saturated fatty acid, monounsaturated fatty acid, low chain unsaturated fatty acids in poly unsaturated fatty acid, and highly unsaturated fatty acid. The point of no-return of the juveniles was the 5th day of starvation. These results could be helpful to the rational formulation of the feeding strategies for S. maindroni cultivation.

Key words: Capsicum annum, Sesquiterpene cyclase, Salicylic acid, Antioxidant enzymes