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Documents disponibles écrits par cet auteur (5)
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Article
Ralf Edler, Auteur ; Wolfgang Goymann, Auteur ; Ingrid Schwabl, Auteur ; Thomas W. P. Friedl, AuteurThe immunocompetence handicap hypothesis (ICHH) posits that the hormone testosterone mediates a trade-off between investment in reproduction and immunological condition. In this study, we tested the ICHH in the Red Bishop Euplectes orix, a polyg[...]
Article
Alice U. Edler, Auteur ; Thomas W. P. Friedl, AuteurMales in many bird species develop elaborate carotenoid-based plumage ornaments which often play an important role as signals of individual quality in intra- or intersexual selection. However, knowledge of the pattern of age-related variation in[...]
Article
Thomas W. P. Friedl, AuteurThis paper gives an overview of important aspects of breeding behaviour in the Red Bishop (Euplectes orix), a weaverbird with a wide distribution in Africa south of the Sahara. Territorial and courtship behaviour of males in nuptial plumage as w[...]
Article
Markus Metz, Auteur ; Nicole Geberzahn, Auteur ; Lars H. Hansen, Auteur ; Georg M. Klump, Auteur ; Thomas W. P. Friedl, AuteurIn this study we have investigated the effect of nest-building behaviour, courtship behaviour, and male-male interactions on male reproductive performance of the red bishop (Euplectes orix), a highly polygynous, colonially breeding weaverbird sp[...]
Article
Thomas W. P. Friedl, Auteur ; Elisabeth Groscurth, AuteurIn several fields of research, such as immunoecology, evolutionary ecology, sexual selection, parasitology or host-parasite coevolution, a reliable quantitative assessment of blood parasite infections is necessary for testing specific prediction[...]
