caa a22 4500 465782655 CHVBK 20180323111959.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.1007/BF00180301 doi (NATIONALLICENCE)springer-10.1007/BF00180301 Conflicts, social economics and life history strategies in ants [Elektronische Daten] [Nigel Franks, Bryan Ireland, Andrew Bourke] Summary: This paper presents a life history model for a perennial social insect colony. The model's purpose is to explore the evolutionary consequences, in terms of fitness of different parties within the colony, of alternative life history strategies. The model has been specifically developed for colonies of the slave-making ant, Harpagoxenus sublaevis, which has reproductive workers organized in dominance orders. It incorporates empirically obtained parameters, and uses computer algorithms based on numerical optimization to determine the optimum policy for a colony queen in allocating resources between workers, queens, and males. Variants of the model also consider alternative situations in which either (1) orphaned workers do not slave-raid, or (2) workers are sterile. The results correspond closely to data on colony growth and reproductive allocation obtained from the field. They suggest that a colony queen would suffer reduced fitness in the two theoretical cases as compared to the real situation. Reproduction by orphaned workers posthumously enhances the colony queen's fitness because a queen with sterile workers cannot produce enough extra sexuals in her lifetime to balance her loss in grandson production. The results also suggest that the division of labour between slave-raiding and nonraiding workers observed in H. sublaevis colonies can be explained as an outcome of worker-worker reproductive conflict: reproductively-inhibited subordinate workers can increase their inclusive fitness by slaveraiding for dominant, nonraiding egg-layers. These findings emphasize the evolutionary importance of the orphanage period and of intracolony conflict in monogynous social insect colonies. Springer-Verlag, 1990 Franks Nigel School of Biological Sciences, University of Bath, BA2 7AY, Bath, UK aut Ireland Bryan School of Mathematical Sciences, University of Bath, BA2 7AY, Bath, UK aut Bourke Andrew School of Biological Sciences, University of Bath, BA2 7AY, Bath, UK aut Behavioral Ecology and Sociobiology Springer-Verlag 27/3(1990-09-01), 175-181 0340-5443 27:3<175 1990 27 265 https://doi.org/10.1007/BF00180301 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00180301 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Franks Nigel School of Biological Sciences, University of Bath, BA2 7AY, Bath, UK aut NATIONALLICENCE 700 1- Ireland Bryan School of Mathematical Sciences, University of Bath, BA2 7AY, Bath, UK aut NATIONALLICENCE 700 1- Bourke Andrew School of Biological Sciences, University of Bath, BA2 7AY, Bath, UK aut NATIONALLICENCE 773 0- Behavioral Ecology and Sociobiology Springer-Verlag 27/3(1990-09-01), 175-181 0340-5443 27:3<175 1990 27 265 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer