UTILIZATION OF ADULT BURROWS BY JUVENILES OF THE GHOST SHRIMP, CALLIANASSA JAPONICA ORTMANN : EVIDENCE FROM RESIN CASTS OF BURROWS

: Polyester resin casts of burrows of the thalassinidean ghost shrimp ， Callianassa japonica ORTMANN ， were collected on an intertidal sand flat in west Kyushu ， Japan. One burrow cast obtained in. September 1989 and another ， obtained in September 1990 ， had a thin “ branch" originating from the stout adult burrow cas t. Evidence pointed to such branches being inhabited by newly recruited individuals of C. japonica. It is believed that settling larvae and/or newly settled juveniles had entered the surface openings of the adult burrows to later branch off independently.