Skip to main content Accessibility help
×
Home

The sternal gland: variation in size and activity in worker instars of Trinervitermes bettonianus (Sjöst) (Termitidae)

  • G. W. Oloo (a1)

Abstract

The sternal gland shows significant differences in size and activity in different instars of the worker caste of Trinervitermes bettonianus. Gland size (volume and surface area) was not significantly different between instars 1 and 2, and 2 and 3; but was significantly different between these age groups and instars 4–7. The potential trail-laying activity of the gland of a worker increased from zero to 50 trail units in the course of development from the first to seventh instar. The relatively high biological activity of the gland in the older instars 5–7 may be of ecological significance, since these stages were found to constitute over 90% of foragers under field conditions.

Copyright

References

Hide All
Ernst, E. and van Toledo, B. (1975) The development of the sternal gland during caste differentiation in the termite Trinervitermes bettonianus (Isoptera: Termitidae). Proc. VII Int. Congr. IUSSI, Dijon, pp. 213217.
Leuthold, R. H. and Lüscher, M. (1974) An unusual caste polymorphism of the sternal gland and its trail pheromone production in the termite Trinervitermes bettonianus. Insectes soc. 21, 335341.
Noirot, Ch. (1955) Recherches sur le polymorphisme des termites supérieurs (Termitidae). Annls Sci. nat. 17 (11 série), 27595.
Oloo, G. W. (1981) Specificity of termite trails: analysis of natural trails of Trinervitermes, Macrotermes and Odontotermes from sympatric populations. Entomologia exp. appl. 29, 162168.
Oloo, G. W. and Leuthold, R. H. (1979) The influence of food on trail-laying and recruitment behaviour in Trinervitermes bettonianus (Termitidae: Nasutitermitinae). Entomologia exp. appl. 26, 267278.
Oloo, G. W. and Leuthold, R. H. (1980) Behavioural and physiological changes in reproductives of Trinervitermes bettonianus (Sjoest) (Isoptera: Termitidae) in the process of colony foundation. Sociobiology 5, 6978.
Pateels, J. M. (1965) Polyethisme chez les ouvriers de Nasutitermes lujae (Termitidae, Isoptéres). Biologie Gabonica 1, 191205.
Siegel, S. (1956) Non-parametric Statistics for the Behavioural Sciences. McGraw-Hill, New York.

Keywords

The sternal gland: variation in size and activity in worker instars of Trinervitermes bettonianus (Sjöst) (Termitidae)

  • G. W. Oloo (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.