TY - JOUR T1 - The evolution of prey-wrapping behaviour in spiders JF - Journal of Natural History Y1 - 2007 A1 - Barrantes, Gilbert A1 - Eberhard, William G. SP - 1631 EP - 1658 KW - Animal constructions KW - Appendages KW - Araneae (Arachnida). KW - Araneae [Silk / / Evolutionary origins of use in prey wrapping KW - behaviour] [Phylogeny / / Prey wrapping behaviour KW - Ecology KW - Evolution KW - evolutionary origins KW - Feeding behaviour KW - General morphology KW - Nesticidae KW - Nesticidae (Araneae). KW - Nutrition KW - of silk use] [Cocoons / / ]. KW - possible synapomorphy] [Food handling / KW - Prey wrapping / Involvement of legs IV] [Phylogeny / Synapomorphy / Prey KW - Silk glands KW - Synotaxidae KW - Synotaxidae (Araneae). KW - Systematics KW - Theridiidae (Araneae). KW - Theridiidae [Prosomal legs / Legs IV / Prey KW - use of legs IV]. KW - wrapping behaviour KW - wrapping behaviour involvement AB - We traced the evolution of silk use by spiders in attacks on prey by combining previous publications with new observations of 31 species in 16 families. Two new prey-wrapping techniques are described. One, in which the spider holds a tense line (often covered with viscid silk) with both legs IV and applies it to the prey with a simultaneous movement of both legs, may be a synapomorphy linking Theridiidae, Nesticidae, and Synotaxidae. The other, in which the spider stands over the prey and turns in place, is apparently very ancient; it occurs in Theraphosidae, Tengellidae, and Agelenidae. The use of legs IV to wrap prey is described for the first time in Filistatidae and Scytodidae. Using a recent phylogeny of spiders, we propose that prey wrapping with legs IV has evolved convergently at least four times. We propose that prey wrapping originally evolved from egg-sac construction behaviour. VL - 41 SN - 0022-2933 UR - ://ZOOREC:ZOOR14312075231 N1 - ZOOR14312075231 ER -