Salivary Cortisol Reaction Norms in Zoo-Housed Great Apes: Diurnal Slopes and Intercepts as Indicators of Stress Response Quality by Verena Behringer, Jeroen M. G. Stevens, Ruth Sonnweber

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Plasma Testosterone and Androstenedione Levels Follow the Same Sex-Specific Patterns in the Two <i>Pan</i> Species by Ruth Sonnweber, Jeroen M. G. Stevens, Gottfried Hohmann, Tobias Deschner, Verena Behringer

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Semen collection, evaluation, and cryopreservation in the bonobo (Pan paniscus) by Ilse Gerits, Eline Wydooghe, Sofie Peere, Francis Vercammen, Jeroen M. G. Stevens, Cyriel Ververs

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Testing the effect of medical positive reinforcement training on salivary cortisol levels in bonobos and orangutans. by Verena Behringer, Jeroen M G Stevens, Gottfried Hohmann, Erich Möstl, Dieter Selzer, Tobias Deschner

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Adult bonobos show no prosociality in both prosocial choice task and group service paradigm by Jonas Verspeek, Edwin J. C. van Leeuwen, Daan W. Laméris, Nicky Staes, Jeroen M. G. Stevens

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Sex-differences in age-related decline of urinary insulin-like growth factor-binding protein-3 levels in adult bonobos and chimpanzees by Verena Behringer, Stefan Wudy, Werner F. Blum, Jeroen M. G. Stevens, Thomas Remer, Christophe Boesch, Gottfried Hohmann

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Elevated neopterin levels in wild, healthy chimpanzees indicate constant investment in unspecific immune system by Verena Behringer, Jeroen M. G. Stevens, Roman M. Wittig, Catherine Crockford, Klaus Zuberbühler, Fabian H. Leendertz, Tobias Deschner

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Evaluating Self-Directed Behaviours and Their Association with Emotional Arousal across Two Cognitive Tasks in Bonobos (<i>Pan paniscus</i>) by Daan W. Laméris, Jonas Verspeek, Marina Salas, Nicky Staes, Jonas R. R. Torfs, Marcel Eens, Jeroen M. G. Stevens

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Multi-group analysis of grooming network position in a highly social primate. by Jonas R R Torfs, Jeroen M G Stevens, Jonas Verspeek, Daan W Laméris, Jean-Pascal Guéry, Marcel Eens, Nicky Staes

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Multi-group analysis of grooming network position in a highly social primate by Jonas R. R. Torfs, Jeroen M. G. Stevens, Jonas Verspeek, Daan W. Laméris, Jean-Pascal Guéry, Marcel Eens, Nicky Staes

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Group-specific expressions of co-feeding tolerance in bonobos and chimpanzees preclude dichotomous species generalizations by Edwin J.C. van Leeuwen, Nicky Staes, Jake S. Brooker, Stephanie Kordon, Suska Nolte, Zanna Clay, Marcel Eens, Jeroen M.G. Stevens

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Drivers of Dyadic Cofeeding Tolerance in <i>Pan</i>: A Composite Measure Approach by Nicky Staes, Kim Vermeulen, Edwin J. C. van Leeuwen, Jonas Verspeek, Jonas R. R. Torfs, Marcel Eens, Jeroen M. G. Stevens

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Chimpanzee Extraversion scores vary with epigenetic modification of dopamine receptor gene D2 (DRD2) and early rearing conditions by Nicky Staes, Cassandra M. White, Elaine E Guevara, Marcel Eens, William D. Hopkins, Steven J. Schapiro, Jeroen M.G. Stevens, Chet C. Sherwood, Brenda J Bradley

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Cell-Mediated Immune Ontogeny Is Affected by Sex but Not Environmental Context in a Long-Lived Primate Species by Verena Behringer, Verena Behringer, Caroline Deimel, Jeroen M. G. Stevens, Melodie Kreyer, Melodie Kreyer, Sean M. Lee, Gottfried Hohmann, Barbara Fruth, Barbara Fruth, Barbara Fruth, Michael Heistermann

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Average phenotype but not plasticity in two metabolic hormones covary in wild female bonobos (Pan paniscus) by Ruth Sonnweber, Gottfried Hohmann, Gottfried Hohmann, Jeroen M. G. Stevens, Tobias Deschner, Tobias Deschner, Barbara Fruth, Barbara Fruth, Barbara Fruth, Anna-Lena Fiedler, Niina O. Nurmi, Verena Behringer, Verena Behringer

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