A model for heat production and thermoregulation in winter clusters of honey bees using differential heat conduction equations

Lemke, Matthias; Lamprecht, I.

doi:10.1016/s0022-5193(05)80227-9

Cited by 17 publications

(9 citation statements)

References 11 publications

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“…We conclude that current models of winter cluster thermoregulation (Lemke and Lamprecht, 1990;Myerscough, 1993;Watmough and Camazine, 1995) that neglect the role of active (endothermic) heat production are incomplete. The following points have to be incorporated in these models (see below).…”

Section: Discussionmentioning

confidence: 91%

Endothermic heat production in honeybee winter clusters

Stabentheiner

Pressl

Papst

et al. 2003

Journal of Experimental Biology

138

112

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SUMMARYIn order to survive cold northern winters, honeybees crowd tightly together in a winter cluster. Present models of winter cluster thermoregulation consider the insulation by the tightly packed mantle bees as the decisive factor for survival at low temperatures, mostly ignoring the possibility of endothermic heat production. We provide here direct evidence of endothermic heat production by `shivering' thermogenesis. The abundance of endothermic bees is highest in the core and decreases towards the surface. This shows that core bees play an active role in thermal control of winter clusters. We conclude that regulation of both the insulation by the mantle bees and endothermic heat production by the inner bees is necessary to achieve thermal stability in a winter cluster.

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Section: Discussionmentioning

confidence: 91%

Endothermic heat production in honeybee winter clusters

Stabentheiner

Pressl

Papst

et al. 2003

Journal of Experimental Biology

138

112

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“…It has been observed that a passive bee generates q "1.2 mW at 203C (Lemke & Lamprecht, 1990). The temperature increase due to a single bee at 203C per unit time step, h O , is dependent on the size of the hive (x K?V and y K?V ), insulation of air and passive bees ( ?GP and @CC ), the time between bee movements ( ) and the volume associated with an individual bee (g).…”

Section: Model Parameterizationmentioning

confidence: 99%

“…Previous models of temperature distributions inside winter clusters have used di!erential heat equations to predict changes in cluster width and core and mantle temperatures over time (Basak et al, 1996;Lemke & Lamprecht, 1990;Myerscough, 1993;Omholt, 1987). Most begin with the assumption that the metabolic heat production at any point in the cluster is a function of the distance from the centre.…”

Section: Introductionmentioning

confidence: 99%

Shape and Dynamics of Thermoregulating Honey Bee Clusters

Sumpter

Broomhead

2000

Journal of Theoretical Biology

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“…The raised temperature not only prevents cold injury to the bees, but also keeps honey stores liquid so that they can be used to obtain energy. The temperature of the cluster and the behaviour of the bees have been much studied (Southwick 1987, 1991, 1994, Farenholtz et al 1989, Moritz and Southwick 1992, deToledo and Nogueira‐Couto 1999), and the process can be modelled (Lempke and Lamprecht 1990, Sumpter and Broomhead 2000).…”

Section: Aggregation and Social Insectsmentioning

confidence: 99%

Modification of adverse conditions by insects

Danks¹

2002

Oikos

115

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Many insects modify their environments directly, rather than merely choosing available sites that are already favourable. The modifications are carried out by making excavations in soil and other substrates, constructing feeding or resting shelters, inducing plant responses such as galls, aggregating, building colonial nests, and through parental actions. Such environmental modifications are briefly reviewed and related to the conditions that they modify. Some of the modifications offset physical factors such as dryness or flooding and cool or freezing temperatures. Others reduce the effects of natural enemies or enhance food resources. These effects have seldom been quantified and much of the evidence is anecdotal, but preliminary generalizations are made from existing information. Although potential roles often overlap, excavations and shelters protect especially against physical factors, while aggregations, colonies and parental actions more often influence the acquisition of resources. How modifications affect the impact of natural enemies differs among different kinds of enemies and is especially difficult to test. In any event, adaptive local modifications of the environment by insects are shown to be widely distributed and important. However, their specific roles have often been assumed rather than tested, or have been overlooked along with the potential interdependence of different effects. Therefore, environmental modifications should be considered explicitly and examined with greater rigour during the study of insect life cycles.

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A model for heat production and thermoregulation in winter clusters of honey bees using differential heat conduction equations

Cited by 17 publications

References 11 publications

Endothermic heat production in honeybee winter clusters

Endothermic heat production in honeybee winter clusters

Shape and Dynamics of Thermoregulating Honey Bee Clusters

Modification of adverse conditions by insects

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