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Photoperiodicity stimulates cell size and caste determination in the oriental hornet Vespa orientalis Linne, 1775

In the course of the active season combs are built in the nest of Oriental hornet (Vespa orientalis ). Changes in the internal volume of the cells comprising the combs and consequently in the proportion of small hornet females (workers) and large ones (queens) are directly affected by the rate of ny...

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Bibliographic Details
Published in:Insectes sociaux 1983-01, Vol.30 (3), p.332-346
Main Authors: Ishay, J.S, Levanon, D, Avidor, N, Shechter, O.S
Format: Article
Language:English
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Summary:In the course of the active season combs are built in the nest of Oriental hornet (Vespa orientalis ). Changes in the internal volume of the cells comprising the combs and consequently in the proportion of small hornet females (workers) and large ones (queens) are directly affected by the rate of nycthemeral changes and by changes in the length of the day. As the days lengthen and the rate of the daily changes diminishes, smaller cells are built whereas increasingly larger cells are constructed during the briefer days and the increasing rate of daily changes occurring in July-October.
ISSN:0020-1812
1420-9098
DOI:10.1007/bf02223991