Die Temperaturregulation des Bienenvolkes unter regeltheoretischen Gesichtspunkten

Wohlgemuth, R.

doi:10.1007/bf00297946

Cited by 21 publications

(12 citation statements)

References 45 publications

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“…Humidity levels measured in this study corresponded with those measured by others (Büdel 1960;Wohlgemuth 1957), but RH was below the optimum levels for brood development (>90%) identified by Doull (1976). Although microclimate in the cells is influenced by hive atmosphere, the humidity at the bottom of the cells, where brood develops, may be higher than our measured values.…”

Section: Discussionsupporting

confidence: 43%

“…Limitations to humidity adjustment may also occur when no water is available (during droughts or at night) or when no water foragers are available (Wohlgemuth 1957). Furthermore, humidity optima differ in the brood area and nectar stores (high humidity is necessary for brood development, but a dry atmosphere favours nectar ripening).…”

Section: Discussionmentioning

confidence: 99%

“…Humidity can also depend on trade-offs with other biophysical parameters, such as temperature or respiratory gases (e.g. Seeley 1974;Korb and Linsenmair 1998;Kleineidam and Roces 2000;Wohlgemuth 1957). For example, stale air has to be flushed out to allow clean air to enter the hive.…”

Section: Discussionmentioning

confidence: 99%

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Do honeybees, Apis mellifera scutellata, regulate humidity in their nest?

Human

Nicolson

Dietemann

2006

Naturwissenschaften

119

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Honeybees are highly efficient at regulating the biophysical parameters of their hive according to colony needs. Thermoregulation has been the most extensively studied aspect of nest homeostasis. In contrast, little is known about how humidity is regulated in beehives, if at all. Although high humidity is necessary for brood development, regulation of this parameter by honeybee workers has not yet been demonstrated. In the past, humidity was measured too crudely for a regulation mechanism to be identified. We reassess this issue, using miniaturised data loggers that allow humidity measurements in natural situations and at several places in the nest. We present evidence that workers influence humidity in the hive. However, there are constraints on potential regulation mechanisms because humidity optima may vary in different locations of the nest. Humidity could also depend on variable external factors, such as water availability, which further impair the regulation. Moreover, there are trade-offs with the regulation of temperature and respiratory gas exchanges that can disrupt the establishment of optimal humidity levels. As a result, we argue that workers can only adjust humidity within sub-optimal limits.

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Section: Discussionsupporting

confidence: 43%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Do honeybees, Apis mellifera scutellata, regulate humidity in their nest?

Human

Nicolson

Dietemann

2006

Naturwissenschaften

119

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“…Reproductive rates are also higher at 70 RH % than at 40 RH % (Le Conte et al 1990), but mites stop reproducing when relative humidity in the broodnest exceeds 80 RH % (Kraus and Velthuis 1997). The normal RH % found in the honey bee broodnest in temperate climates is Ϸ40 RH %, and it rarely exceeds 70 RH % (Wohlgemuth 1957). The usual summertime climate for Louisiana is more tropical than Mediterranean, and the temperature and RH % within the broodnest are favorable for reproduction by varroa mites.…”

Section: Discussionmentioning

confidence: 97%

Variable Population Growth of <I>Varroa destructor</I> (Mesostigmata: Varroidae) in Colonies of Honey Bees (Hymenoptera: Apidae) During a 10-Year Period

Harris

Harbo

Villa

et al. 2003

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“…Since ambient temperature in cold and temperate climates is generally clearly below brood nest temperature, RH within the brood nest is comparably low even when ambient RH is high. RH in the brood nest of A. mellifera colonies is usually about 40% [14], and most likely levels above 70% hardly occur in temperate and cold climates even under extreme conditions [15]. In Mediterranean climates during summer temperatures close to brood nest temperature are frequent, but RH is usually low.…”

mentioning

confidence: 99%