Salivary Cortisol Reaction Norms in Zoo-Housed Great Apes: Diurnal Slopes and Intercepts as Indicators of Stress Response Quality

por Behringer, Verena, Stevens, Jeroen M. G., Sonnweber, Ruth
Publicado 2022

Plasma Testosterone and Androstenedione Levels Follow the Same Sex-Specific Patterns in the Two Pan Species

por Sonnweber, Ruth, Stevens, Jeroen M. G., Hohmann, Gottfried, Deschner, Tobias, Behringer, Verena
Publicado 2022

Validation of a Method for the Assessment of Urinary Neopterin Levels to Monitor Health Status in Non-human-primate Species

por Behringer, Verena, Stevens, Jeroen M. G., Leendertz, Fabian H., Hohmann, Gottfried, Deschner, Tobias
Publicado 2017

Semen collection, evaluation, and cryopreservation in the bonobo (Pan paniscus)

por Gerits, Ilse, Wydooghe, Eline, Peere, Sofie, Vercammen, Francis, Stevens, Jeroen M. G., Ververs, Cyriel
Publicado 2022

Testing the Effect of Medical Positive Reinforcement Training on Salivary Cortisol Levels in Bonobos and Orangutans

por Behringer, Verena, Stevens, Jeroen M. G., Hohmann, Gottfried, Möstl, Erich, Selzer, Dieter, Deschner, Tobias
Publicado 2014

Oxytocin and Vasopressin Receptor Gene Variation as a Proximate Base for Inter- and Intraspecific Behavioral Differences in Bonobos and Chimpanzees

por Staes, Nicky, Stevens, Jeroen M. G., Helsen, Philippe, Hillyer, Mia, Korody, Marisa, Eens, Marcel
Publicado 2014

Bonobo personality traits are heritable and associated with vasopressin receptor gene 1a variation

por Staes, Nicky, Weiss, Alexander, Helsen, Philippe, Korody, Marisa, Eens, Marcel, Stevens, Jeroen M.G.
Publicado 2016

Bonobo personality predicts friendship

por Verspeek, Jonas, Staes, Nicky, Leeuwen, Edwin J. C. van, Eens, Marcel, Stevens, Jeroen M. G.
Publicado 2019

Adult bonobos show no prosociality in both prosocial choice task and group service paradigm

por Verspeek, Jonas, van Leeuwen, Edwin J. C., Laméris, Daan W., Staes, Nicky, Stevens, Jeroen M. G.
Publicado 2022

Sex Differences in Age-Related Decline of Urinary Insulin-Like Growth Factor-Binding Protein-3 Levels in Adult Bonobos and Chimpanzees

por Behringer, Verena, Wudy, Stefan A., Blum, Werner F., Stevens, Jeroen M. G., Remer, Thomas, Boesch, Christophe, Hohmann, Gottfried
Publicado 2016

Time-lag of urinary and salivary cortisol response after a psychological stressor in bonobos (Pan paniscus)

por Verspeek, Jonas, Behringer, Verena, Laméris, Daan W., Murtagh, Róisín, Salas, Marina, Staes, Nicky, Deschner, Tobias, Stevens, Jeroen M. G.
Publicado 2021

Evaluating Self-Directed Behaviours and Their Association with Emotional Arousal across Two Cognitive Tasks in Bonobos (Pan paniscus)

por Laméris, Daan W., Verspeek, Jonas, Salas, Marina, Staes, Nicky, Torfs, Jonas R. R., Eens, Marcel, Stevens, Jeroen M. G.
Publicado 2022

Multi-group analysis of grooming network position in a highly social primate

por Torfs, Jonas R. R., Stevens, Jeroen M. G., Verspeek, Jonas, Laméris, Daan W., Guéry, Jean-Pascal, Eens, Marcel, Staes, Nicky
Publicado 2023

Drivers of Dyadic Cofeeding Tolerance in Pan: A Composite Measure Approach

por Staes, Nicky, Vermeulen, Kim, van Leeuwen, Edwin J. C., Verspeek, Jonas, Torfs, Jonas R. R., Eens, Marcel, Stevens, Jeroen M. G.
Publicado 2022