Caste Composition and Mound Size of the Subterranean Termite Macrotermes gilvus (Isoptera: Termitidae: Macrotermitinae)
Authors: Lee, Ching-Chen; Neoh, Kok-Boon; Lee, Chow-Yang
Source: Annals of the Entomological Society of America, Volume 105, Number 3, Pages 377-518 , pp. 427-433(7)
Publisher: Entomological Society of America
Abstract:The colony size and caste composition of different-sized Macrotermes gilvus (Hagen) (Isoptera: Termitidae: Macrotermitinae) mounds on Penang Island, Malaysia, were studied. The total number of termite individuals differed significantly among different-sized mounds. Small mounds contained 15,400 ± 600 (n = 3) individuals; medium mounds contained 33,500 ± 2,400 (n = 3) individuals; and large mounds contained 61,400 ± 4,400 (n = 3) individuals. Larvae constituted the largest proportion (42.60%) of the total population, followed by workers (42.19%), soldiers (14.16%), presoldiers (0.71%), and alates (0.34%). Population parameters (i.e., total population, total adult apterous caste, and total juvenile apterous caste) were positively and significantly correlated with mound size (e.g., mound height and mound diameter) and queen weight. Significant correlations also were found between mound parameters and queen weight. The sex ratio of alates was significantly skewed toward females in five of seven colonies. Of 44 colonies surveyed, 13.6% were polygynous and 11.4% were polyandrous. The degree of physogastry of female reproductives in polygynous colonies was lower than that in monogynous colonies. In contrast, there was no significant difference in the mean weight of male reproductives between monoandrous and polyandrous colonies.
Document Type: Research Article
Publication date: May 1, 2012
- Annals of the Entomological Society of America is published in January, March, May, July, September, and November. Annals especially invites submission of manuscripts that integrate different areas of insect biology, and address issues that are likely to be of broad relevance to entomologists. Articles also report on basic aspects of the biology of arthropods, divided into categories by subject matter: systematics; ecology and population biology; arthropod biology; arthropods in relation to plant diseases; conservation biology and biodiversity; physiology, biochemistry, and toxicology; morphology, histology, and fine structure; genetics; and behavior.
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