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2012年49 No.4
Sex ratios of the dryword termite Cryptotermes domesticus
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Key Words： Cryptotermes domesticus，primary reproductives，soldiers，larvae，nymphs，sex ratio
Abstract：In order to clarify the sex ratios ( ♀:♂ ) of different castes and immatures of Cryptotermes domesticus
(Haviland)，we investigated sex ratios of self-pairing four years old colonies and nests collected from the wild at room
temperature in a laboratory and in wild colonies． The results show that primary reproductive termites，soldiers，larvae and
nymphs in either laboratory or wild colonies were comprised of both females and males． Sex ratios in the laboratory
colonies for primary reproductive termites and soldiers were 1 ∶ 1 and 1 ∶ 1． 24，respectively，and 1 ∶ 1． 46 for immature
termites，including larvae and nymphs． In the natural colonies，the sex ratios of primary reproductive termites，soldiers
and immature termites were 1∶ 1，1∶ 1． 15 and 1∶ 1． 43，respectively．