Korb, Judith and Roux, E. A. and Lenz, M. (2003) Proximate factors influencing soldier development in the basal termite Cryptotermes secundus (Hill). INSECTES SOCIAUX, 50 (4). pp. 299-303. ISSN 0020-1812, 1420-9098
Full text not available from this repository.Abstract
Regulation of soldier development in termites at the endocrinological and social scale was intensively studied in the 60s and 70s, but conclusive results are still scanty. In termites, the presence of soldiers inhibits further soldier differentiation, but the mechanism is not well understood. Secretions from the frontal glands seem to be important, but dry- and dampwood termites do not have frontal glands. We investigated the influence of precocene I, a JH-antagonist, and of soldier head extracts on the development of soldiers in the drywood termite, Cryptotermes secundus (Hill). Soldierless colonies produced fewer soldiers when treated with precocene I or soldier head extract than control colonies. Furthermore, colonies treated with precocene I had produced worker-nymph intercastes, last stage nymphs and alates by the end of the experiment (after six months) which were not present in control colonies. Hence, both treatments inhibited soldier development while precocene I simultaneously promoted the development of adult traits, probably by reducing (directly or indirectly) the JH level. The inhibition effect of the soldier head extract indicates that at least in termites without a frontal gland, other sources of material in the head have a regulatory function.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | JUVENILE-HORMONE ANALOG; APHID MORPHOGENESIS; NASUTITERMES-LUJAE; GENE-EXPRESSION; CASTE; ISOPTERA; DIFFERENTIATION; BANKS; Kalotermitidae; caste development; frontal gland; precocene |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 27 Jul 2021 12:03 |
| Last Modified: | 27 Jul 2021 12:03 |
| URI: | https://pred.uni-regensburg.de/id/eprint/38450 |
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