Determination of temperature preference and the role of the enlarged cheliped in thermoregulation in male sand fiddler crabs,Uca pugilator |
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| Institution: | 1. Institute for Hydrobiology and Fisheries Science, University of Hamburg, Olbersweg 24, 22767, Hamburg, Germany;2. Thünen Institute of Fisheries Ecology, Palmaille 9, 22676, Hamburg, Germany |
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| Abstract: | - 1.Male Uca pugilator whose major cheliped was immersed in 3 °C water bath experienced a significant drop in Tb. Thus, the enlarged claw of male Uca pugilator may have an unexplored function: thermoregulation.
- 2.Crabs prefer warmer substrates (19–24 and 28–30 °C) over cooler (15–17 °C).
- 3.Mean selected temperature (MST) may not be an accurate reflection of Tb. Crabs in a thermal chamber preferred temperatures between 25 and 30 °C but their average Tb was 23.2 °C.
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