Abstract
Some of the most sophisticated of all animal-built structures are the mounds of African termites of the subfamily Macrotermitinae, the fungus-growing termites. They have long been studied as fascinating textbook examples of thermoregulation or ventilation of animal buildings. However, little research has been designed to provide critical tests of these paradigms, derived from a very small number of original papers. Here I review results from recent studies on Macrotermes bellicosus that considered the interdependence of ambient temperature, thermoregulation, ventilation and mound architecture, and that question some of the fundamental paradigms of termite mounds. M. bellicosus achieves thermal homeostasis within the mound, but ambient temperature has an influence too. In colonies in comparably cool habitats, mound architecture is adapted to reduce the loss of metabolically produced heat to the environment. While this has no negative consequences in small colonies, it produces a trade-off with gas exchange in large colonies, resulting in suboptimally low nest temperatures and increased CO2 concentrations. Along with the alteration in mound architecture, the gas exchange/ventilation mechanism also changes. While mounds in the thermally appropriate savannah have a very efficient circular ventilation during the day, the ventilation in the cooler forest is a less efficient upward movement of air, with gas exchange restricted by reduced surface exchange area. These results, together with other recent findings, question entrenched ideas such as the thermosiphon-ventilation mechanism or the assumption that mounds function to dissipate internally produced heat. Models trying to explain the proximate mechanisms of mound building, or building elements, are discussed.
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References
Badertscher S, Gerber C, Leuthold RH (1983) Polyethism in food supply and processing in termite colonies of Macrotermes subhyalinus (Isoptera). Behav Ecol Sociobiol 12:115–119
Bölsche W (1931) Der Termitenstaat. Kosmos Gesellschaft der Naturfreunde, Stuttgart
Bonabeau E, Theraulaz G, Deneubourg JL, Aron S, Camazine S (1997) Self-organization in social insects. Trends Ecol Evol 12:188–193
Bonabeau E, Theraulaz G, Deneubourg JL, Franks NR (1998) A model for the emergence of pillars, walls and royal chambers in termite nests. Philos Trans R Soc Lond B 353:1561–1576
Bruinsma OH (1979) An analysis of building behaviour of the termite Macrotermes subhyalinus (Rambur). PhD thesis, Agricultural University, Wageningen, The Netherlands
Camazine S, Deneubourg JL, Franks N, Sneyd J, Theraulaz G, Bonabeau E (2001) Self-organization in biological systems. Princeton University Press, Princeton, N.J.
Collins NM (1979) The nest of Macrotermes bellicosus (Smeathman) from Mokwa, Nigeria. Insectes Soc 26:240–246
Collins NM (1981) Populations, age structure and survivorship of colonies of Macrotermes bellicosus (Isoptera: Macrotermitinae). J Anim Ecol 50:293–311
Darlington JPEC (1987) How termites keep their cool. Entomol Soc Queensl News Bull 15:45–46
Darlington JPEC (1989) Ventilation systems in termite nests in Kenya. Sociobiology 15:263–264
Darlington JPEC, Zimmerman PR, Wandiga SO (1992) Populations in nests of the termite Macrotermes jeanneli in Kenya. J Trop Ecol 8:73–85
Darlington JPEC, Zimmerman PR, Greenberg J, Westberg C (1997) Production of metabolic gases by nests of the termite Macrotermes jeanneli in Kenya. J Trop Ecol 13:491–510
Deneubourg JL (1977) Application de l'ordre par fluctuation à la description du nid chez les termites. Insectes Soc 24:117–130
Gerber C, Badertscher S, Leuthold RH (1988) Polyethism in Macrotermes bellicosus (Isoptera). Insectes Soc 35:226–240
Grassé PP (1959) La reconstruction du nid et les coordinations inter-individuelles chez Bellicositermes natalensis et Cubitermes sp. La théorie de la stigmergie: essai d'interprétation du comportement des termites constructeurs. Insectes Soc 6:41–81
Grassé PP (1984) Réparation, reconstruction et remaniements internes du nid. Coordination de tâches individuelles et comportement stigmergique. La déterminisme du comportement constructeur. In: Grassé PP (ed) Termitologia, Tome II: Fondation des sociétés – construction. Masson, Paris, pp 490–577
Grassé PP, Noirot C (1961) Nouvelles recherches sur la systématique et l'éthologie des termites champignonnistes du genre Bellicositermes Emerson. Insectes Soc 8:311–359
Hansell MH (1984) Animal architecture and building behaviour. Longman, London
Heinrich B (1993) The hot-blooded insects. Harvard University Press, Cambridge, Mass.
Jones RJ (1979) Expansion of the nest of Nasutitermes costalis. Insectes Soc 26:322–342
Jones RJ (1980) Gallery construction by Nasutitermes costalis: polyethism and the behaviour of individuals. Insectes Soc 27:5–28
Korb J (1997) Lokale und regionale Verbreitung von Macrotermes bellicosus (Isoptera; Macrotermitinae): Stochastik oder Deterministik? Wissenschaft & Technik Verlag, Berlin
Korb J, Aanen DK (2003) The evolution of uniparental transmission of fungal symbionts in fungus-growing termites (Macrotermitinae). Behav Ecol Sociobiol 53:65–71
Korb J, Linsenmair KE (1998a) The effects of temperature on the architecture and distribution of Macrotermes bellicosus (Isoptera: Macrotermitinae) mounds in different habitats of a West African Guinea savanna. Insectes Soc 45:51–65
Korb J, Linsenmair KE (1998b) The structure of Macrotermes bellicosus (Isoptera; Macrotermitinae) mounds: what role does microclimate and thermoregulation play? Insectes Soc 45:335–342
Korb J, Linsenmair KE (1999a) The architecture of termite mounds, a result of a trade-off between thermoregulation and gas exchange? Behav Ecol 10:312–316
Korb J, Linsenmair KE (1999b) Reproductive success of Macrotermes bellicosus (Isoptera, Macrotermitinae) in two neighbouring habitats. Oecologia 118:183–191
Korb J, Linsenmair KE (2000a) Thermoregulation of termite mounds: what role does ambient temperature and metabolism of the colony play? Insectes Soc 47:357–363
Korb J, Linsenmair KE (2000b) Ventilation of termite mounds: new results require a new model. Behav Ecol 11:486–494
Korb J, Linsenmair KE (2001) The causes of spatial patterning of mounds of a fungus-cultivating termite: results from nearest-neighbour analysis and ecological studies. Oecologia 127:324–333
Lepage M (1984) Distribution, density and evolution of Macrotermes bellicosus nests (Isoptera: Macrotermitinae) in the north-east of Ivory Coast. J Anim Ecol 53:107–117
Loos R (1964) A sensitive anemometer and its use for the measurement of air currents in the nest of Macrotermes natalensis. In: Bouillon A (ed) Études sur les termites Africains. Masson, Paris, pp 364–373
Lüscher M (1955) Der Sauerstoffverbrauch bei Termiten und die Ventilation des Nestes bei Macrotermes natalensis (Haviland). Acta Trop 12:289–307
Lüscher M (1956) Die Lufterneuerung im Nest der Termite Macrotermes natalensis (Haviland). Insectes Soc 3:273–276
Lüscher M (1961) Air-conditioned termite nests. Sci Am 205:138–145
Matsumoto T (1978) Population density, biomass, nitrogen and carbon content, energy value and respiration rate of four species of termites in Pasoh Forest Reserve. Malay Nat J 30:335–351
McComie LD, Dhanarajan G (1990) Respiratory rate and energy utilization by Macrotermes carbonarius Hagen (Isoptera, Termitidae, Macrotermitidae) in Penang, Malaysia. Insect Sci Appl 11:197–204
Noirot C (1970) The nests of termites. In: Krishna K, Weesner FM (eds) Biology of termites II. Academic Press, New York, pp 311–350
Noirot C, Darlington JPEC (2000) Termite nests: architecture, regulation and defence. In: Abe T, Bignell DE, Higashi M (eds) Termites: evolution, sociality, symbioses, ecology. Kluwer Academic, Dordrecht, pp 121–139
O'Toole DV, Robinson PA, Myerscough MR (1999) Self-organized criticality in termite architecture: a role for crowding in ensuring ordered nest expansion. J Theor Biol 198:305–327
Ruelle JE (1964) L'architecture du nid de Macrotermes natalensis et son sens fonctionnel. In: Bouillon A (ed) Études sur les termites Africains. Masson, Paris, pp 327–364
Sands WA (1969) The association of termites and fungi. In: Krishna K, Weesner FM (eds) Biology of termites I. Academic Press, New York, pp 495–524
Schuurman G, Dangerfield JM (1996) Mound dimensions, internal structure and potential colony size in the fungus growing termite Macrotermes michaelseni (Isoptera: Macrotermitinae). Sociobiology 27:29–38
Smeathman H (1781) Some account of the termites which are found in Africa and other hot climates. Philos Trans R Soc Lond 71:139–192
Theraulaz G, Bonabeau E, Deneubourg JL (1999) The mechanisms and rules of coordinated building in social insects. In: Detrain C, Deneubourg JL, Pasteels JM (eds) Information processing in social insects. Birkhäuser, Basel, pp 309–330
Thomas RJ (1987) Factors effecting the distribution and activity of fungi in the nests of Macrotermitinae (Isoptera). Soil Biol Biochem 19:343–349
Traniello JFA (1981) Enemy deterrence in the recruitment strategy of a termite: soldier-organized foraging in Nasutitermes costalis. Proc Natl Acad Sci USA 78:1976–1979
Traniello JFA, Leuthold RH (2000) Behavior and ecology of foraging termites. In: Abe T, Bignell DE, Higashi M (eds) Termites: evolution, sociality, symbioses, ecology. Kluwer Academic, Dordrecht, pp 141–168
Turner JS (2000) Architecture and morphogenesis in the mound of Macrotermes michaelseni (Sjöstedt) (Isoptera: Termitidae, Macrotermitinae) in northern Namibia. Cimbebasia 16:143–175
Turner JS (2001) On the mound of Macrotermes michaelseni as an organ of respiratory gas exchange. Physiol Biochem Zool 74:798–822
Weir JS (1973) Air flow, evaporation and mineral accumulation in mounds of Macrotermes subhyalinus (Rambur). J Anim Ecol 42:509–520
Wood TG, Thomas RJ (1989) The mutualistic association between Macrotermitinae and Termitomyces. In: Wilding N, Collins NM, Hammond PM, Webber JF (eds) Insect–fungus interactions. Academic Press, London, pp 69–92
Acknowledgements
I wish to thank K.E. Linsenmair, C. Anderson, S. Turner and two anonymous referees for discussions and helpful comments on the manuscript. I was financially supported by an Emmy Noether Fellowship of the DFG (Ko 1895/2-1).
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Korb, J. Thermoregulation and ventilation of termite mounds. Naturwissenschaften 90, 212–219 (2003). https://doi.org/10.1007/s00114-002-0401-4
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DOI: https://doi.org/10.1007/s00114-002-0401-4