Qualitative Behavioural Assessment of bonobo emotional expressivity across observer groups and zoo housing environments

Authors: D. W. Laméris, M. Salas, M. Eens, L. Gillespie, N. Staes, J. R. Torfs, J. Verspeek, H. Vervaecke, S. J. Ward, J. M. Stevens

Publication/Journal: Anim Welf

Keywords: animal welfare, emotion, Fixed List, free choice profiling, primate, qba

2024

Visually assessed body condition shows high heritability in a pedigreed great ape population

Authors: Jonas R. R. Torfs, Marcel Eens, Daan W. Laméris, Jeroen M. G. Stevens, Jonas Verspeek, Jean-Pascal Guery, Nicky Staes

Publication/Journal: American Journal of Primatology

Keywords: animal models, body condition score, bonobo, relative fat mass

2023

Chimpanzee sociability is associated with vasopressin (Avpr1a) but not oxytocin receptor gene (OXTR) variation

Authors: Nicky Staes, Sonja E. Koski, Philippe Helsen, Erik Fransen, Marcel Eens, Jeroen M. G. Stevens

Publication/Journal: Hormones and Behavior

Keywords: avpr1a, behavioral genetics, oxtr, oxytocin, pan troglodytes, personality, sociability, vasopressin

2015

Testosterone increases repertoire size in an open-ended learner: An experimental study using adult male European starlings (Sturnus vulgaris)

Authors: Alain J. M. Van Hout, Rianne Pinxten, Veerle M. Darras, Marcel Eens

Publication/Journal: Hormones and Behavior

Keywords: adult song learning, european starling, repertoire turnover, repetition rate, sexual signal, song bout length, sturnus vulgaris, testosterone

2012

Behavioural syndromes and trappability in free-living collared flycatchers, Ficedula albicollis

Authors: László Zsolt Garamszegi, Marcel Eens, János Török

Publication/Journal: Animal Behaviour

Keywords: adaptation, collared flycatcher, coping style, ficedula hypoleuca, personality, temperament, trappability

2009

Simultaneous treatment with an aromatase inhibitor and an anti-androgen decreases the likelihood of dawn song in free-living male great tits, Parus major

Authors: Els Van Duyse, Rianne Pinxten, Tinne Snoeijs, Marcel Eens

Publication/Journal: Hormones and Behavior

Keywords: androgen inhibitors, atd, dawn chorus, flutamide, parus major, song, testosterone

2005

Unravelling animal personalities: how and why individuals consistently differ

Authors: Carere, Eens

Publication/Journal: Behaviour

Keywords: animal personality, behavioral syndromes, behavioural syndromes, temperament

2005

Effect of spatial crowding on aggressive behavior in a bonobo colony

Authors: Adinda Sannen, Linda Van Elsacker, Marcel Eens

Publication/Journal: Zoo Biology

Keywords: aggression, bonobo, pan paniscus, spatial crowding

2004

Castration does not decrease nonreproductive aggression in yearling male European starlings (Sturnus vulgaris)

Authors: Rianne Pinxten, Elke De Ridder, Maarten De Cock, Marcel Eens

Publication/Journal: Hormones and Behavior

Keywords: castration, nonreproductive aggression, sturnus vulgaris, testosterone

2003