Effect of Natural Particles on the Growth and Behavior of Sebastes Schlegelii

In recent years, human activities and climate change are likely increasing the input of particles in the aquatic environment, raising concerns about the negative effects to aquatic organisms. However, the impact of natural particles on the marine organisms is not clear. Here, this study compared the effects of two different size of natural particles on the growth and behavior of Sebastes schlegelii . Results indicated that the weight gain rate and specific growth rate of juvenile fish in the P-S treatment group were respectively reduced by 11.12% and 1.48%, while it respectively reduced by 17.62% and 2.16% in P-L treatment group after 7 days of exposure. In addition, dietary exposure to natural particles seriously increased the average speed and distance moved of the fish than the control, and the negative effects was enhanced with the increase of particle size. The results not only showed the inhibition of natural particles on the growth of the juvenile fish, but indicated that the locomotor activity of the juvenile fish was increased. This study provided basic theoretical data for assessing the effects of natural particles on aquatic organisms.