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Insects 2016, 7(3), 38; doi:10.3390/insects7030038

Nest-Gallery Development and Caste Composition of Isolated Foraging Groups of the Drywood Termite, Incisitermes minor (Isoptera: Kalotermitidae)

1
Research Institute for Sustainable Humanosphere (RISH), Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
2
Research Center for Biomaterials, Indonesian Institute of Sciences (LIPI), Jl. Raya Bogor km. 46 Cibinong, Bogor 16911, Indonesia
3
Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
4
Oya Shiroari Giken, 438-1 Oaza-ichiya, Nachikatsuura-cho, Higashimuro-gun, Wakayama 649-5141, Japan
5
Nara National Museum, 50 Noborioji-cho, Nara 630-8213, Japan
6
Kyushu National Museum, 4-7-2 Ishizaka, Dazaifu, Fukuoka 818-0118, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Brian T. Forschler
Received: 25 May 2016 / Revised: 5 July 2016 / Accepted: 14 July 2016 / Published: 22 July 2016
(This article belongs to the Special Issue Management of Wood-Attacking Insects)
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Abstract

An X-ray computed-tomographic examination of nest-gallery development from timbers naturally infested by foraging groups of Incisitermes minor colonies was conducted. This study documents the colonization process of I. minor to new timbers and how the isolated groups maintain their nest-gallery system. The results suggested that development of a nest-gallery within a suitable wood item is not random, but shows selection for softer substrate and other adaptations to the different timber environments. Stigmergic coordinations were expressed in dynamic changes of the nest-gallery system; indicated by fortification behavior in sealing and re-opening a tunnel approaching the outer edge of the timber, and accumulating fecal pellets in particular chambers located beneath the timber surface. The study also examines the caste composition of isolated groups to discover how I. minor sustains colonies with and without primary reproductives. View Full-Text
Keywords: nest-gallery development; X-ray computed tomography; caste composition; Incisitermes minor nest-gallery development; X-ray computed tomography; caste composition; Incisitermes minor
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Himmi, S.K.; Yoshimura, T.; Yanase, Y.; Oya, M.; Torigoe, T.; Akada, M.; Imadzu, S. Nest-Gallery Development and Caste Composition of Isolated Foraging Groups of the Drywood Termite, Incisitermes minor (Isoptera: Kalotermitidae). Insects 2016, 7, 38.

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