A ‘mathematical’ spider living on gravel plains of the Namib Desert |
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| Authors: | G Costa A Petralia E Conti C Hnel |
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| Institution: | G. Costa, A. Petralia, E. Conti,C. Hänel |
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| Abstract: | In certain areas of the Namib gravel plains a new Ariadna sp. was discovered. It rims its vertical burrow with a stone circle, made on average of seven quartz stones. Some mathematical relationships between hole diameter, stone sizes and weight, and animal size were studied. A correlation was found, and stone selection by this spider postulated. Different hypotheses on the adaptive value of stone circle are suggested. |
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| Keywords: | Ariadna sp gravel plains Namib Desert mathematicalrelationships animal size stone circle hole diameter |
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