Wily old spiders know a trick or two

2019-03-07 05:19:08

SPIDERS can learn from experience, with mature spiders building better webs than novices, according to Astrid Heiling of the University of Vienna and Mariella Herberstein of the University of Melbourne in Victoria. They studied two species of orb-web spider, Argiope keyserlingi and Larinioides sclopetarius. In both species, practised builders made bottom-heavy webs compared with the novices’ more symmetrical attempts, because it is quicker to run down from the hub, rather than up, to pounce on prey. “The use of cumulative experience has not been shown [in spiders] before,