caa a22 4500 465782760 CHVBK 20180323111959.0 cr unu---uuuuu 170327e19901001xx s 000 0 eng 10.1007/BF00164902 doi (NATIONALLICENCE)springer-10.1007/BF00164902 Adaptive significance of sex ratio adjustment in semifree-ranging Barbary macaques ( Macaca sylvanus ) at Salem [Elektronische Daten] [Andreas Paul, Jutta Kuester] Summary: New data on the secondary sex ratio in semi-free-ranging Barbary macaques at Salem confirm the observation that the offspring of high-ranking females in this colony are biased towards sons while the offspring of low-ranking females are biased towards daughters. Analysis of interbirth intervals yielded no consistent differences in the relative costs of rearing male and female offspring for either high- or low-ranking females. Survivorship to adulthood of male and female offspring born to mothers of all rank classes was remarkably high, and there was no indication that juvenile females of low-ranking mothers face any greater risk. Daughters of high- and low-ranking mothers showed no substantial differences in reproductive success, while mating and probably reproductive success of sons seemed to be dependent on maternal rank, at least at the beginning of their reproductive career. The results suggest that variation in sex ratio does increase parental fitness. Springer-Verlag, 1990 Paul Andreas Institut für Anthropologie, Universität Göttingen, Bürgerstrasse 50, D-3400, Göttingen, Federal Republic of Germany aut Kuester Jutta Institut für Anthropologie, Universität Göttingen, Bürgerstrasse 50, D-3400, Göttingen, Federal Republic of Germany aut Behavioral Ecology and Sociobiology Springer-Verlag 27/4(1990-10-01), 287-293 0340-5443 27:4<287 1990 27 265 https://doi.org/10.1007/BF00164902 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00164902 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Paul Andreas Institut für Anthropologie, Universität Göttingen, Bürgerstrasse 50, D-3400, Göttingen, Federal Republic of Germany aut NATIONALLICENCE 700 1- Kuester Jutta Institut für Anthropologie, Universität Göttingen, Bürgerstrasse 50, D-3400, Göttingen, Federal Republic of Germany aut NATIONALLICENCE 773 0- Behavioral Ecology and Sociobiology Springer-Verlag 27/4(1990-10-01), 287-293 0340-5443 27:4<287 1990 27 265 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer