Abstract
This study was conducted to develop an optimally designed coonstripe shirimp pot that is capable of controlling catch selectively. To achieve the optimum design for the shrimp pot, tank experiments were conducted to investigate the characteristics of gaiting for coonstripe shrimp (Pandalus hypsinotus Brandt) and the entrance mechanism on shrimp pot. The experiments were conducted to investigate gaiting behavior for shrimp by using acrylic board and netting panels, and to investigate the entrance mechanism by using model pot with different slope lengths in tank (2m×2m×1m,L×W×H) The gaiting pattern of coonstrip shrimp was regular for walking on acrylic board with six ambulatory legs. However, the gaiting pattern was irregular for walking on netting panels with different shortening rates. In addition, coonstripe shrimp entered model pot by walking and by swimming. However, as the length of slope increased, the coonstripe shrimp entered the pots by swimming than by walking. The shape factors influenced the shrimp to enter the pot by swimming rather than the mesh size fo netting to covered pot.
