caa a22 4500 469097329 CHVBK 20180323133034.0 cr unu---uuuuu 170328e19920201xx s 000 0 eng 10.1007/BF00317229 doi (NATIONALLICENCE)springer-10.1007/BF00317229 Hansson Lennart Department of Wildlife Ecology, Swedish University of Agricultural Sciences, S-750 07, Uppsala, Sweden aut Parental investment related to social systems in microtines [Elektronische Daten] [Lennart Hansson] Summary: Laboratory offspring of wild-caught voles Clethrionomys glareolus and Microtus agrestis, bred for 1 year under constant conditions, were examined with regard to sex ratios and weights at weaning and at 2 months of age. C. glareolus exhibits female territoriality and M. agrestis male territoriality in summer. The adults die away in late summer-autumn. Early-summer young mature in the year of birth but late-summer young do not reach maturity until the following year. C. glareolus young showed a male bias in early summer and a female bias in late summer. Conditions were the opposite but less clear in M. agrestis. C. glareolus males grew comparatively faster than M. agrestis males and showed a markedly higher early summer male: female weight ratio at 2 months of age. Maternal investment thus appears clearly related to the social system; the sex with the largest number and highest quality of young was that which was not limited in number by territoriality. However, the investment depended also on the time until maturation of the young. Springer-Verlag, 1992 Parental investment nationallicence Social system nationallicence Microtines nationallicence Sex ratios nationallicence Growth rates nationallicence Oecologia Springer-Verlag 89/2(1992-02-01), 284-287 0029-8549 89:2<284 1992 89 442 https://doi.org/10.1007/BF00317229 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317229 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Hansson Lennart Department of Wildlife Ecology, Swedish University of Agricultural Sciences, S-750 07, Uppsala, Sweden aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 89/2(1992-02-01), 284-287 0029-8549 89:2<284 1992 89 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer