A mark and recapture study was carried out from 1990–1992 for a population of Gekko hokouensis in the southern part of Okinawajima Island, Ryukyu Archipelago. Gonadal states were also examined for 389 preserved specimens from the central part of the island. Results indicate that this species breeds from April to August and that females may lay eggs more than once during a breeding season. Young appeared from July to November, and hatchlings, although they grew somewhat in autumn, scarcely grew in winter. Their growth rate dramatically increased during the next spring and summer. Although some hatchlings grew to the minimum maturity size (43 mm in snout–vent length in both sexes) by the end of the next breeding season, others required a second year to reach maturity. There were no sexual differences in juvenile growth. After reaching maturity, however, growth rate of females was significantly greater than that of males. This seems to account for the significantly greater adult SVL in females than in males.
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