抄録
Stochastic simulation of feeding behavior of abalones on algae in a restricted area was presented, based on a modified model for marine herbivorous feeding. Their feeding behavior was characterized by the stochastic processes of moving, feeding and resting. In the process of moving, vectors of the movement consisted of moving velocities and relative directions with probability density functions of log-normal and von Mises distribution, respectively, that were independent of each other. In the process of feeding and resting, hourly feeding rate and daily active duration the rest of which in a day was resting duration, were characterized by a bivariate normal distribution with a certain negative correlation coefficient with each other. Parameters in these processes were estimated, based upon observations of abalones in the rearing tanks. Resultant feeding process by this stochastic simulation was compared with that by another deter-ministic simulation and observed feeding of abalones upon young algae.
