The dynamic swimming ability of Pandalus kessleri living in an eel grass bed was examined using acirculative flow tank and was evaluated by an equation of motion. The wave coditions that formed the habitat were also determined by small amplitude wave theory. The thrust force F (dyn) can be expressed as a function of the body length L (cm) and the water temperature t (°C) in the following formula:F=5.32t1.16ln1.16 (24.2t-0.9) BL1.59In addition, the ability of a seaweed bed to subdue waves was estimated by momentum conservation law, and the adequacy of the theory was verified by, an experiment using a wavetank. Consequently, the width, density, etc. of an eel grass bed that form the habitat can be determined.

Pandalus kessleri's swimming ability in an eel grass bed is influenced by body length, water temperature, and the ability of the bed to subdue waves.

Habitable seaweed bed conditions for Pandalus kessleri

Key Takeaway: Pandalus kessleri's swimming ability in an eel grass bed is influenced by body length, water temperature, and the ability of the bed to subdue waves.