caa a22 4500 378895575 CHVBK 20180305123505.0 cr unu---uuuuu 161128e20041201xx s 000 0 eng 10.1515/mamm.2004.028 doi (NATIONALLICENCE)gruyter-10.1515/mamm.2004.028 Body mass changes in male Daubenton's bats Myotis daubentonii (Chiroptera, Vespertilionidae) during the seasonal activity period [Elektronische Daten] [Jorge A. Encarnação, Markus Dietz, Uwe Kierdorf, Volkmar Wolters] Body mass changes of adult and juvenile male Daubenton's bats were studied in a summer habitat in Hesse (Germany) in the years 1998-2001. Animals from the resident population were regularly captured along the flight path from April to October, and body mass was determined using a digital balance. Body mass of adult individuals differed significantly among fortnightly periods (Kruskal-Wallis ANOVA by ranks: H = 141.75, p < 0.001). Body mass increased significantly from the second half of April (median: 7.0 g) to the first half of May (median: 7.8 g). Between the second half of May and the first half of August, median body mass fluctuated between 7.8 g and 8.3 g. From the second half of July (median: 7.9 g) to the second half of August (median: 8.4 g), and the second half of September (median: 9.3 g) body mass again significantly increased. The highest median body mass (9.6 g) was recorded in the second half of October. Median body mass of juvenile males ranged between 6.5 g in the first half of July and 8.5 g in the second half of October. Differences in body mass over the studied period were significant (H = 21.70, p < 0.01). During the months July, August, and September, body mass of adult males was significantly higher than that of juveniles, whereas in October the difference was no longer of statistical significance. It is suggested that the decrease in body mass observed in some adult males in September was related to their reproductive activity. Copyright 2004, Walter de Gruyter Myotis daubentonii nationallicence body mass nationallicence activity period nationallicence Encarnação Jorge A. 1. Department of Animal Ecology, Justus-Liebig-University of GiessenHeinrich-Buff-Ring 26-32 (IFZ), D-35392 Giessen (Germany) aut Dietz Markus 2. Institute of Animal Ecology and Nature EducationRichard-Wagner-Str. 12, D-35321 Laubach (Germany) aut Kierdorf Uwe 1. Department of Animal Ecology, Justus-Liebig-University of GiessenHeinrich-Buff-Ring 26-32 (IFZ), D-35392 Giessen (Germany) aut Wolters Volkmar 1. Department of Animal Ecology, Justus-Liebig-University of GiessenHeinrich-Buff-Ring 26-32 (IFZ), D-35392 Giessen (Germany) aut Mammalia Walter de Gruyter 68/4(2004-12-01), 291-297 0025-1461 68:4<291 2004 68 mamm https://doi.org/10.1515/mamm.2004.028 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/mamm.2004.028 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Encarnação Jorge A. 1. Department of Animal Ecology, Justus-Liebig-University of GiessenHeinrich-Buff-Ring 26-32 (IFZ), D-35392 Giessen (Germany) aut NATIONALLICENCE 700 1- Dietz Markus 2. Institute of Animal Ecology and Nature EducationRichard-Wagner-Str. 12, D-35321 Laubach (Germany) aut NATIONALLICENCE 700 1- Kierdorf Uwe 1. Department of Animal Ecology, Justus-Liebig-University of GiessenHeinrich-Buff-Ring 26-32 (IFZ), D-35392 Giessen (Germany) aut NATIONALLICENCE 700 1- Wolters Volkmar 1. Department of Animal Ecology, Justus-Liebig-University of GiessenHeinrich-Buff-Ring 26-32 (IFZ), D-35392 Giessen (Germany) aut NATIONALLICENCE 773 0- Mammalia Walter de Gruyter 68/4(2004-12-01), 291-297 0025-1461 68:4<291 2004 68 mamm CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter