On the origin of MADS-domain transcription factors von Gramzow, Lydia, Ritz, Markus S, Theißen, Günter

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Introgressive hybridization and the evolutionary history of the herring gull complex revealed by mitochondrial and nuclear DNA von Sternkopf, Viviane, Liebers-Helbig, Dorit, Ritz, Markus S, Zhang, Jun, Helbig, Andreas J, de Knijff, Peter

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Vocal performance reflects individual quality in a nonpasserine von Janicke, Tim, Hahn, Steffen, Ritz, Markus S., Peter, Hans-Ulrich

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South polar skuas from a single breeding population overwinter in different oceans though show similar migration patterns von Kopp, Matthias, Peter, Hans-Ulrich, Mustafa, Osama, Lisovski, Simeon, Ritz, Markus S., Phillips, Richard A., Hahn, Steffen

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Sex-Specific Arrival Times on the Breeding Grounds: Hybridizing Migratory Skuas Provide Empirical Support for the Role of Sex Ratios von Lisovski, Simeon, Fröhlich, Anne, von Tersch, Matthew, Klaassen, Marcel, Peter, Hans-Ulrich, Ritz, Markus S.

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Phylogeography of the southern skua complex—rapid colonization of the southern hemisphere during a glacial period and reticulate evolution von Ritz, Markus S., Millar, Craig, Miller, Gary D., Phillips, Richard A., Ryan, Peter, Sternkopf, Viviane, Liebers-Helbig, Dorit, Peter, Hans-Ulrich

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Natural and sexual selection on male behaviour and morphology, and female choice in a wild field cricket population: spatial, temporal and analytical components von Ritz, Markus S, Köhler, Günter

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Male behaviour over the season in a wild population of the field cricket Gryllus campestris L von RITZ, MARKUS S, KÖHLER, GÜNTER

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Sex-specific mass loss in chick-rearing South Polar Skuas Stercorarius maccormicki- stress induced or adaptive? von RITZ, MARKUS S.

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Floral visitation and reproductive traits of Stamenoid petals, a naturally occurring floral homeotic variant of Capsella bursa-pastoris (Brassicaceae) von Ziermann, Janine, Ritz, Markus S, Hameister, Steffen, Abel, Christian, Hoffmann, Matthias H, Neuffer, Barbara, Theißen, Günter

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Oceanographic and climatic factors differentially affect reproduction performance of Antarctic skuas von Hahn, Steffen, Reinhardt, Klaus, Ritz, Markus S., Janicke, Tim, Montalti, Diego, Peter, Hans-Ulrich

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Hybridisation between South polar skua (Catharacta maccormicki) and Brown skua (C. antarctica lonnbergi) in the antarctic Peninsula region von RITZ, Markus S, HAHN, Steffen, JANICKE, Tim, PETER, Hans-Ulrich

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Factors affecting chick growth in the South Polar Skua (Catharacta maccormicki) : food supply, weather and hatching date von RITZ, Markus S, HAHN, Steffen, PETER, Hans-Ulrich

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Sex recognition in brown skuas: do acoustic signals matter? von Janicke, Tim, Ritz, Markus S., Hahn, Steffen, Peter, Hans-Ulrich

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Hybridisation between South polar skua (Catharacta maccormicki) and Brown skua (C. antarctica lonnbergi) in the Antarctic Peninsula regionr von Ritz, Markus S, Hahn, Steffen, Janicke, Tim, Peter, Hans-ulrich

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Supplementary DNA evidence fails to confirm presence of Brown Skuas Stercorarius antarctica in Europe: a retraction of Votier et al. (2004) von VOTIER, STEPHEN C., KENNEDY, MARTYN, BEARHOP, STUART, NEWELL, RICHARD G., GRIFFITHS, KATE, WHITAKER, HELEN, RITZ, MARKUS S., FURNESS, ROBERT W.

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Short communication: Supplementary DNA evidence fails to confirm presence of Brown Skuas Stercorarius antarctica in Europe: a retraction of Votier et al. (2004) von VOTIER, STEPHEN C, Kennedy, Martyn, Bearhop, Stuart, Newell, Richard G, Griffiths, Kate, Whitaker, Helen, Ritz, Markus S, Furness, Robert W

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The role of the male's cerci in copulation and mate guarding in decorated crickets (Gryllodes sigillatus) von Ritz, Markus S., Sakaluk, Scott K.

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(Table 1) Mean statistics for acoustic parameters measured for both brown skua (Catharacta antarctica lonnbergi) sexes von Janicke, Tim, Ritz, Markus S, Hahn, Steffen, Peter, Hans-Ulrich

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Data from: Sex-specific arrival times on the breeding grounds: hybridizing migratory skuas provide empirical support for the role of sex ratios von Lisovski, Simeon, Fröhlich, Anne, Von Tersch, Matthew, Klaassen, Marcel, Peter, Hans-Ulrich, Ritz, Markus S.

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