How do young bats find suitable swarming and hibernation sites? Assessing the plausibility of the maternal guidance hypothesis using genetic maternity assignment for two European bat species Author Stumpf, Maike Ernst-Moritz-Arndt Universität Greifswald, Zoological Institute and Museum, Loitzerstrasse 26, 17489 Greifswald, Germany Author Meier, Frauke Echolot GbR, Eulerstasse 12, 48155 Münster, Germany Author Grosche, Lena Echolot GbR, Eulerstasse 12, 48155 Münster, Germany Author Halczok, Tanja K. Ernst-Moritz-Arndt Universität Greifswald, Zoological Institute and Museum, Loitzerstrasse 26, 17489 Greifswald, Germany Author Schaik, Jaap Van Ernst-Moritz-Arndt Universität Greifswald, Zoological Institute and Museum, Loitzerstrasse 26, 17489 Greifswald, Germany Author Kerth, Gerald Ernst-Moritz-Arndt Universität Greifswald, Zoological Institute and Museum, Loitzerstrasse 26, 17489 Greifswald, Germany & Corresponding author: E-mail: gerald. kerth @ uni-greifswald. de gerald.kerth@uni-greifswald.de text Acta Chiropterologica 2017 2017-12-01 19 2 319 327 journal article 10.3161/15081109ACC2017.19.2.008 1733-5329 7823251

TABLE 1. Total number of M. daubentonii and M. nattereri sampled in 2013 and 2014 at the ‘Brunnen Meyer’ swarming site

Species and year	Total genotyped Adult females Juveniles
based on the most recent winter census data (Loth, 2012), which suggest that approximately 1,000 adult females of both species make use of the site in winter. All assignments were done by using at strict confidence interval of 95%, as implemented in Cervus.
M. daubentonii
2013	85	33	52
2014	85	30	55
M. nattereri
2013	113	31	82
2014	82	33	49