5 Items

Recent Submissions
Diurnal Changes in Hypoxia Shape Predator-Prey Interaction in a Bird-Fish System

Lukas, Juliane ; Auer, Felix ; Goldhammer, Tobias ; Krause, Jens ; Romanczuk, Pawel ; Klamser, Pascal ; Arias-Rodriguez, Lenin ; Bierbach, David (2021-03-18)

Animals often face changing environments, and behavioral flexibility allows them to rapidly and adaptively respond to abiotic factors that vary more or less regularly. However, abiotic factors that affect prey species do not necessarily affect their predators. Still, the prey’s response might affect the predator indirectly, yet evidence from the wild for such a classical bottom-up effect of abi...

Male Sexual Preference for Female Swimming Activity in the Guppy (Poecilia reticulata)

Bierbach, David ; Wenchel, Ronja ; Gehrig, Stefan ; Wersing, Serafina ; O’Connor, Olivia L. ; Krause, Jens (2021-02-12)

Mate choice that is based on behavioural traits is a common feature in the animal kingdom. Using the Trinidadian guppy, a species with mutual mate choice, we investigated whether males use female swimming activity—a behavioural trait known to differ consistently among individuals in many species—as a trait relevant for their mate choice. In the first experiment, we assessed male and female acti...

Consistent Behavioral Syndrome Across Seasons in an Invasive Freshwater Fish

Lukas, Juliane ; Kalinkat, Gregor ; Miesen, Friedrich Wilhelm ; Landgraf, Tim ; Krause, Jens ; Bierbach, David (2021-01-07)

Understanding the linkage between behavioral types and dispersal tendency has become a pressing issue in light of global change and biological invasions. Here, we explore whether dispersing individuals exhibit behavioral types that differ from those remaining in the source population. We investigated a feral population of guppies (Poecilia reticulata) that undergoes a yearly range shift cycle. ...

Guppies Prefer to Follow Large (Robot) Leaders Irrespective of Own Size

Bierbach, David ; Mönck, Hauke J. ; Lukas, Juliane ; Habedank, Marie ; Romanczuk, Pawel ; Landgraf, Tim ; Krause, Jens (2020-05-15)

Body size is often assumed to determine how successfully an individual can lead others with larger individuals being better leaders than smaller ones. But even if larger individuals are more readily followed, body size often correlates with specific behavioral patterns and it is thus unclear whether larger individuals are more often followed than smaller ones because of their size or because th...

Black Mice Dataset v1

Hohlbaum, Katharina ; Andresen, Niek ; Wöllhaf, Manuel ; Lewejohann, Lars ; Hellwich, Olaf ; Thöne-Reineke, Christa ; Belik, Vitaly (2019)

The “Black Mice Dataset” is a large set of images of C57BL/6JRj mice and a corresponding “well-being” label. It encompasses images of mice that have (or have not) undergone different procedures that impaired their well-being. Images were taken at different points in time before and after the procedures. The images were obtained within the framework of a project, in which the impact of procedure...