A STUDY ON VERTICAL MOVEMENT MODEL FOR PLANKTONIC LARVAE OF MANILA CLAM IN TOKYO BAY

摘要

In this paper, the average growth rate and spawning date of Manila clam larvae in Tokyo Bay were estimated from their generation structure. A simplified model for the length and growth rate of the larvae was developed, along with a numerical model for their vertical movement in Tokyo Bay. The individual differences in the growth rate and length of the larvae for different spawning dates were considered in the vertical movement model. The three dimensional movement of Manila clam larvae was simulated using these models. The model was able to reproduce the main features of the larvae population at different depths.