caa a22 4500 38809348X CHVBK 20180307125258.0 cr unu---uuuuu 161130e199904 xx s 000 0 eng 10.4039/Ent131259-2 doi S0008347X00009883 pii (NATIONALLICENCE)cambridge-10.4039/Ent131259-2 POLYETHISM IN FORAGING IN A POLYMORPHIC PREDATOR, ENOPLOGNATHA OVATA (ARANEAE: THERIDIIDAE): A CASE FOR BALANCE [Elektronische Daten] Two colour morphs of Enoplognatha ovata (Clerck), "redimita” and "lineata” the abdomens of which are whitish with two pink stripes and greyish-yellow, respectively, differ in their foraging strategies. When placed in artificial arenas with flowering stems to ascend, we noted that both morphs had a strong tendency to wander over the ground rather than ascend a stem [unlike the crab spider, Misumena vatia Clerck (Araneae: Thomisidae)], but that lineata was significantly more prone to wander than was redimita. Neither morph showed choice for the type of stem or colour of flower. Nevertheless, redimita showed a greater preference for choosing white artificial flowers (discs) atop 30-cm wooden rods than did lineata. We propose that the relative abundances of the two colour morphs in the natural population represents a balanced polymorphism which is maintained in part by polyethism in hunting strategies, with redimita being more fastidious in its selection of cryptic hunting sites in flowers than is lineata, and the latter being more cryptic and more errant on the ground. Copyright © Entomological Society of Canada 1999 Greco Carlos F. Department of Environmental Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1 Kevan Peter G. Department of Environmental Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1 The Canadian Entomologist Cambridge University Press 131/2(1999-04), 259-268 0008-347X 131:2<259 1999 131 TCE https://doi.org/10.4039/Ent131259-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent131259-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Greco Carlos F. Department of Environmental Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1 NATIONALLICENCE 700 1- Kevan Peter G. Department of Environmental Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/2(1999-04), 259-268 0008-347X 131:2<259 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge