Match!
Anton Stabentheiner
University of Graz
ThermoregulationForagingEcologyBotanyBiology
48Publications
20H-index
1,087Citations
What is this?
Publications 49
Newest
#1Helmut KäferH-Index: 4
#2Helmut KovacH-Index: 15
Last. Anton StabentheinerH-Index: 20
view all 7 authors...
Heteroptera, or true bugs populate many climate zones, coping with different environmental conditions. The aim of this study was the evaluation of their thermal limits and derived traits, as well as climatological parameters which might influence their distribution. We assessed the thermal limits (critical thermal maxima, CTmax, and minima, CTmin) of eight seed bug species (Lygaeidae, Pyrrhocoridae) distributed over four Koppen–Geiger climate classification types (KCC), approximately 6° of latit...
Source
#1Helmut KovacH-Index: 15
#2Helmut KäferH-Index: 4
Last. Anton StabentheinerH-Index: 20
view all 3 authors...
European Polistine wasps inhabit mainly temperate and warm climate regions. However, the paper wasp Polistes biglumis represents an exception; it resides in mountainous areas, e.g., in the Alps and in the Apennines. In these habitats, the wasps are exposed to a broad temperature range during their lifetime. We investigated whether they developed adaptations in their metabolism to their special climate conditions by measuring their CO2 production. The standard or resting metabolic rate and the me...
1 CitationsSource
#1Helmut KovacH-Index: 15
#2Helmut KäferH-Index: 4
Last. Anton StabentheinerH-Index: 20
view all 3 authors...
Polistine wasps collect nectar for their energetic demand and for the provision of the brood. They are mainly ectothermic during different behavioral tasks. We investigated the body temperature of two species living in differing habitats and climate regions, in order to reveal the environmental influence on their thermoregulatory behavior. The species were Polistes dominula in the temperate climate of Central Europe, and Polistes gallicus in the warm Mediterranean climate of Southern Europe. The...
Source
#1Helmut Kovac (University of Graz)H-Index: 15
#2Helmut Käfer (University of Graz)H-Index: 4
Last. Anton Stabentheiner (University of Graz)H-Index: 20
view all 3 authors...
Honeybees need water for different purposes, to maintain the osmotic homeostasis in adults as well as to dilute stored honey and prepare liquid food for the brood. Water is also used for cooling of the hive. Foraging in endothermic insects is energy-intensive and the question arises how much energy bees invest in a resource without any metabolically usable energy. We investigated the energy demand of water collecting bees under natural conditions. The thermoregulation and energetic effort was me...
Source
#1Helmut Kovac (University of Graz)H-Index: 15
#2Anton Stabentheiner (University of Graz)H-Index: 20
Last. Robert Brodschneider (University of Graz)H-Index: 15
view all 3 authors...
ABSTRACT In endothermic wasps, foraging is an expensive activity. To maximise the benefit for the colony, wasps can optimise either the intake rate or energetic efficiency of a foraging trip. We investigated the foraging behaviour of vespine wasps under variable environmental and reward conditions. We trained them to forage for 0.5 mol l –1 sucrose solution from an artificial flower in a flow-through respiratory measurement chamber, and simultaneously measured their body temperature using infrar...
3 CitationsSource
#1Bettina Erregger (University of Graz)H-Index: 2
#2Helmut Kovac (University of Graz)H-Index: 15
Last. Arne K. D. Schmidt (University of Graz)H-Index: 6
view all 6 authors...
ABSTRACT Sexual displays of acoustically signalling insects are used in the context of mate attraction and mate choice. While energetic investment in sound production can increase the reproductive success of the sender, this entails metabolic costs. Resource allocation to sexually selected, reproductive traits can trade off against allocation to naturally selected traits (e.g. growth, immunity) when individuals9 energy budgets are limited. Estimating the magnitude of the costs invested in acoust...
6 CitationsSource
#1Helmut Kovac (University of Graz)H-Index: 15
#2Helmut Käfer (University of Graz)H-Index: 4
Last. Anton Stabentheiner (University of Graz)H-Index: 20
view all 4 authors...
The two paper wasps, Polistes dominula and Polistes gallicus, are related species with strongly differing distribution ranges. We investigated thermal tolerance traits (critical thermal limits and metabolic response to temperature) to gain knowledge about physiological adaptations to their local climate conditions and to get evidence for the reasons of P. dominula’s successful dispersion. Body and ambient temperature measurements at the nests revealed behavioural adaptations to microclimate. The...
3 CitationsSource
Economic principles play an important role not only in human but also in animal communities1,2,3,4,5. The application of economic principles by animals implies finding a positive balance between energetic costs and gains, or between investment and returns2,3. Among the insects, foragers like honeybees are of special interest because they combine high energetic costs with high gains in a widely and wildly fluctuating environment. The high costs result from endothermy kept up throughout the foragi...
12 CitationsSource
#1Helmut Kovac (University of Graz)H-Index: 15
#2Anton Stabentheiner (University of Graz)H-Index: 20
Last. Robert Brodschneider (University of Graz)H-Index: 15
view all 3 authors...
Vespine wasps (Vespula sp.) are endowed with a pronounced ability of endothermic heat production. To show how they balance energetics and thermoregulation under variable environmental conditions, we measured the body temperature and respiration of sucrose foragers (1.5 M, unlimited flow) under variable ambient temperature (T a = 20–35 °C) and solar radiation (20–570 W m−2). Results revealed a graduated balancing of metabolic efforts with thermoregulatory needs. The thoracic temperature in the sh...
4 CitationsSource
#1Helmut Käfer (University of Graz)H-Index: 4
#2Helmut Kovac (University of Graz)H-Index: 15
Last. Anton Stabentheiner (University of Graz)H-Index: 20
view all 4 authors...
The European paper wasp, Polistes dominulus Christ, is an abundant wasp species in South and Central Europe which dispersed to the north in recent times. Polistes dominulus exhibits an energy-extensive mode of life, spending much time resting at the nest, which should be reflected in adaptations regarding gas exchange and standard metabolism. We analysed the resting metabolism (CO2 emission) of Polistes dominulus workers in the ambient temperature range an individual may be exposed to during a b...
6 CitationsSource
12345