caa a22 4500 465782639 CHVBK 20180323111959.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.1007/BF00180300 doi (NATIONALLICENCE)springer-10.1007/BF00180300 Ruttan Lore Department of Ecology and Behavioral Biology, University of Minnesota, 55455, Minneapolis, MN, USA aut Experimental manipulations of dispersal in the subsocial spider, Theridion pictum [Elektronische Daten] [Lore Ruttan] Summary: Theridion pictum (Walckenaer) is a subsocial spider, that is, the mother actively takes care of her offspring for an extended period of time after they emerge. It is demonstrated that spiderling dispersal is affected by the availability of food in the maternal web. Experimental manipulations indicate that in those webs where less food was provided, spiderlings dispersed significantly earlier and in significantly greater numbers. These results illustrate the importance of food availability as a permissive factor in the evolution of social spiders from subsocial ancestors. Food availability also affects the pattern of sex-biased philopatry and dispersal. Although both sexes are more likely to remain in the maternal web when more food is available, females are relatively more likely to do so. When less food is available, females are relatively more likely to disperse than are males. Springer-Verlag, 1990 Behavioral Ecology and Sociobiology Springer-Verlag 27/3(1990-09-01), 169-173 0340-5443 27:3<169 1990 27 265 https://doi.org/10.1007/BF00180300 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00180300 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Ruttan Lore Department of Ecology and Behavioral Biology, University of Minnesota, 55455, Minneapolis, MN, USA aut NATIONALLICENCE 773 0- Behavioral Ecology and Sociobiology Springer-Verlag 27/3(1990-09-01), 169-173 0340-5443 27:3<169 1990 27 265 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer