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1 April 2008 Cold-hardiness in the wolf spider Pardosa groenlandica (Thorell) with respect to thermal limits and dehydration
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Abstract
The super-cooling point (SCP) of Pardosa groenlandica was found to be −10.54° C, which is lower than for species from warmer climates, in agreement with predictions. There was no significant difference found between sexes. There were also no significant differences between the seasons, although there was a slight trend towards lower SCP temperatures in the winter months. Dehydration lowered SCP in P. groenlandica, with a mean depression of over 3° C in desiccated individuals. Specimens of P. groenlandica were able to move at temperatures as low as −2.3° C. These data allow for comparisons with samples from other climatic regions, and reinforce predictions based on previous studies with a variety of arthropods, regarding the effects of hunger and desiccation on the SCP.
Jonathan Murphy, Tatiana Rossolimo and Sina Adl "Cold-hardiness in the wolf spider Pardosa groenlandica (Thorell) with respect to thermal limits and dehydration," The Journal of Arachnology 36(1), (1 April 2008). https://doi.org/10.1636/St07-40SC.1
Received: 12 June 2007; Accepted: ; Published: 1 April 2008
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