--- res: bibo_abstract: - Wingless (ergatoid) males of the tramp ant Cardiocondyla minutior attack and kill their young ergatoid rivals and thus attempt to monopolize mating with female sexuals reared in the colony. Because of the different strength of local mate competition in colonies with one or several reproductive queens, we expected the production of new ergatoid males to vary with queen number. Sex ratios were mostly female-biased, but in contrast to the sympatric species C. obscurior (Cremer and Heinze, 2002) neither the percentage of ergatoid males nor of female sexuals among the first 20 sexuals produced varied considerably with queen number. As in C. obscurior, experimental colony fragmentation led to the production of winged males, whereas in unfragmented control colonies only ergatoid males eclosed.@eng bibo_authorlist: - foaf_Person: foaf_givenName: Jürgen foaf_name: Heinze, Jürgen foaf_surname: Heinze - foaf_Person: foaf_givenName: A. foaf_name: Böttcher, A. foaf_surname: Böttcher - foaf_Person: foaf_givenName: Sylvia foaf_name: Cremer, Sylvia foaf_surname: Cremer foaf_workInfoHomepage: http://www.librecat.org/personId=2F64EC8C-F248-11E8-B48F-1D18A9856A87 orcid: 0000-0002-2193-3868 bibo_doi: 10.1007/s00040-004-0740-6 bibo_issue: '3' bibo_volume: 51 dct_date: 2004^xs_gYear dct_language: eng dct_publisher: Springer@ dct_title: Production of winged and wingless males in the ant, Cardiocondyla minutior@ ...