Argiope bruennichi shows a drinking-like behaviour in web hub decorations (Araneae, Araneidae)
Andre Walter, Peter Bliss, Mark A Elgar, Robin FA Moritz
JOURNAL OF ETHOLOGY | SPRINGER TOKYO | Published : 2009
As stationary predators, araneid spiders that lack protective retreats are especially vulnerable to abiotic influences. Species of the genus Argiope permanently remain at the hub of their orb webs and are thereby exposed to desiccating circumstances. Like other land arthropods, spiders must balance their hygric status. Beside desiccation avoidance behaviours, they can manage this balance by water gain through either liquefied prey items or direct ingestions of free water. Drinking-like behaviours are sparely documented for Araneids. We observed Argiope bruennichi ingesting accumulated water droplets from the silk-overstitched web hub, a part of the web decoration, and subsequently tested whe..View full abstract
We thank the Deutsche Forschungsgemeinschaft (PB) and the Federal State of Saxony-Anhalt, Ministry for Science and Culture (AW), for financial support. The experiments carried out in this study comply with the current laws of Germany.