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Helen M. Smith: The Australian Museum, 6 College Street, Sydney, New South Wales 2010, Australia. E-mail: email@example.com
Table 1.--Examples of "natural" (i.e., undisturbed) average lengths of web site residencies (days or nights) recorded for various orb web spider guilds or species (Ar = Araneidae, N 5 Nephilidae, Te = Tetragnathidae) and exemplars from the Agelenidae (Ag), Linyphiidae (L) and Theridiidae (Th). Entries based primarily on adult female spiders are in bold. Entries are ordered from shortest to longest mean residence time. Figures are calculated or extrapolated from a variety of formats given in the original cited studies. Explanatory notes: ([dagger]) Original figures are for web site tenacity (probability or percentage of spiders remaining per day, Enders 1973). Mean residence = 1 / 1 - prob. (wst). In Enders 1975, 1976 there are often two sets of figures, one set referring to individual spiders on certain nights, the second to gross pooled observations. Here only the latter kinds of figures are used, as these are generally in accord with the methodologies of other authors. # Mix of adults and juveniles. * Original figures are for mean days per residence. Original figures are for turn-over (probability or percentage of spiders leaving per day). Mean residence = 1 / prob. (turn over). ** No calculation made in original paper: extrapolated from figures in text and based on few actual spider movements. Mean length Species (Family ) of residency Reference or guild (days or nights) Orbweavers (Ar, Te, 2.2 to 2.4 * Janetos 1982a Uloboridae) Argiope aurantia Lucas 2.6 to 4.5 ([dagger]) Enders 1975 1833 (Ar) Argiope aurantia (Ar) 3.4 to 7.7 ([dagger]) Enders 1976 Tetragnatha elongata (Te) 3.8 * Smallwood 1993 Cyclosa argenteoalba (Ar) 4.3 ^ to 5.6 ^ Nakata & Ushimaru 2004 & 1999, respectively Sheetweb weavers (L) 4.8 to 5.0 * Janetos 1982a Argiope aurantia (Ar) 5.3 to 14.3 ([dagger]) Enders 1975 Micrathena gracilis 6.7 * to 8 * Hodge 1987b & (W