�ber den Sozialen W�rmehaushalt der Waldameise (Formica Rufa Var. Rufo-Pratensis For.)

Steiner, A.

doi:10.1007/bf00337685

Cited by 30 publications

(2 citation statements)

References 5 publications

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“…str.) mounds during the period of activity is widely known and has been the subject of many studies from various parts of their geographic distribution (Steiner, 1924;Raignier, 1948;Kneitz, 1964;Dlusskij, 1967;Galle, 1973;Horstmann, 1983Horstmann, , 1990Rosengren et al, 1987, Frouz, 1996. Formica s. str.…”

Section: Introductionmentioning

confidence: 99%

Diurnal and seasonal fluctuations in wood ant (Formica polyctena) nest temperature in two geographically distant populations along a south – north gradient

Frouz

Finér

2007

Insect. Soc.

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Temperature changes were recorded continuously in eleven nests of Formica polyctena located in Southern Finland and the Czech Republic. Nest temperatures were recorded in the Czech site from 2003 to 2005 and in Finland during 2004 -2005. Seasonal changes in nest temperature were very similar in both locations.During summer, the ants maintained a relatively high and constant temperature in their nest in both locations. Summer nest temperatures in Finland were higher than those in Czech during 2004 -2005 but did not differ from those in Czech during 2003 -2004. This indicated that the geographical differences were less important than difference between seasons. Nest temperature peaked in June. During summer, daily temperature fluctuations were significantly lower in Finland than in Czechia probably due to shorter nights in Finland. Apparent differences in daily temperature patterns were found in nests with different moisture in both locations. In dry nests, temperature peaked in the evening and decreased overnight, whereas the apparent increase was delayed to the night in wet nests. The spring increase in temperature in wet nests was much steeper that that in the dry ones when whole spring period is considered. During one day, temperatures fluctuated much more in dry nests than in wet ones. These differences seem to be caused by differences in thermal capacity between dry and wet nests.

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Section: Introductionmentioning

confidence: 99%

Diurnal and seasonal fluctuations in wood ant (Formica polyctena) nest temperature in two geographically distant populations along a south – north gradient

Frouz

Finér

2007

Insect. Soc.

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“…Zahn (1958), however, suggested that the main source of heat is that which is absorbed by the ants themselves during sunning outside and then carried inside the nest. Many authors regard the metabolic heat of ants as the main contribution to the heat balance (Steiner 1924, Raignier 1948, Heimann 1963, Kneitz 1964, 1969, 1970. During the period of first solar radiation in spring, Kneitz (1964) combined the reactions of two heat sources and suggested that the inside nest temperature is raised both by direct heat absorption by the nest material, and by higher metabolic heat produced by the ants in response to their increased body temperature.…”

Section: Introductionmentioning

confidence: 99%

Temperature Distribution and Calorimetric Determination of Heat Production in the Nest of the Wood Ant, Formica Polyctena (Hymenoptera, Formicidae)

Coenen-Staß¹,

Schaarschmidt²,

Lamprecht³

1980

Ecology

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This paper describes the temperature and population distribution in the nest hill of the wood ant Formica polyctena. Calorimetric and manometric data on the heat production of ants, pupae, and nest material were used to estimate their possible contribution to the heat balance of the nest hill. The pattern of isothermal lines in the nest did not fully correspond with the population distribution. Oxygen consumption and heat production of the worker ants and pupae steadily with arising ambient temperature. Investigations of the nest material showed a rapid increase in oxygen consumption in spring and a slower decrease in autumn. From spring to autumn the heat production of material from the center of the nest was higher than that of peripheral material. Heat production of the nest material originates in microbial activities and is chiefly the result of aerobic metabolism. The mass—specific heat production of ants is clearly higher than that of nest material. However, considering the total mass of the nest, the rate of heat production of the nest material is more than seven times the heat evolved by the ants. The seasonal fluctuation in the heat production of nest material coincides well with the active phase of the ants. It is conceivable that the nest materials is aerated and loosened by the building actions of the ants, and thus enough nutrient material and optimum conditions are available to the microorganisms.

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Der Einfluß der Temperatur auf Lebensprozesse

Precht¹,

Christophersen²,

Hensel³

1955

Temperatur Und Leben

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�ber den Sozialen W�rmehaushalt der Waldameise (Formica Rufa Var. Rufo-Pratensis For.)

Cited by 30 publications

References 5 publications

Diurnal and seasonal fluctuations in wood ant (Formica polyctena) nest temperature in two geographically distant populations along a south – north gradient

Diurnal and seasonal fluctuations in wood ant (Formica polyctena) nest temperature in two geographically distant populations along a south – north gradient

Temperature Distribution and Calorimetric Determination of Heat Production in the Nest of the Wood Ant, Formica Polyctena (Hymenoptera, Formicidae)

Der Einfluß der Temperatur auf Lebensprozesse

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