Spatial relationship among individuals of the Japanese lacertid Takydromus tachydromoides (Sauria, Lacertidae)

The home range of Takydromus tachydromoides was studied in a grassland area from April 1977 to November 1978. The mean size of home range did not differ markedly between sexes; 136.5 m2 for males and 130.8 m2 for females. Home ranges of adults overlapped greatly in each sex, and the lizard was considered to be non‐territorial. Individuals showed return movement to a definite area (sleeping site) within the home range, and the home range did not shift within a year or between years. Characteristics of the home range of this grassland‐inhabiting lizard were discussed in relation to resource abundance and predation pressure.