Embryonic Development of the Drywood Termite, Cryptotermes brevis

Kawanishi, Clinton Y.
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Hawaii Agricultural Experiment Station, University of Hawaii
The subject of this study, the drywood termite Cryptotermes brevis (Walker), is a kalotermitid of considerable economic importance. Relatively little is known about its life history and behavior. This species, like other members of the family, has no true worker caste and the work is done by nymphal forms of the soldiers and reproductives. C. brevis was chosen for the embryological study partly for contrast with the more highly evolved species of Termitidae, and partly for the practical reason that eggs of known ages are easily obtained. Only the major events in the embryogenesis of C. brevis were studied in detail. They were: (1) cleavage and formation of the blastoderm, (2) development of the embryonic disc and differentiation of the embryonic envelopes, (3) formation of the inner layer, (4) growth and segmentation of the embryo, (5) blastokinesis, (6) formation and degeneration of the secondary dorsal organ, and (7) dorsal closure and differentiation of the mesoderm.
drywood termites, Cryptotermes brevis, insect development, developmental stages, embryo (animal)
Kawanishi CY. 1975. Embryonic development of the drywood termite, Cryptotermes brevis. Honolulu (HI): Hawaii Agricultural Experiment Station, University of Hawaii. 36 p. (Technical Bulletin; 95).
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