The Faculty of Science and the Institute of Biology Leiden is looking for a PhD-candidate, Effects of light pollution on freshwater fish behaviour and physiology: migration and development

ongeveer 2 maanden geleden


Einsteinweg, Leiden, Zuid-Holland
Tijdelijk contract / Tijdelijke opdracht


The PhD candidate will work on a project aimed at studying the effects of artificial light at night (ALAN) on behaviour and physiology of freshwater fish during migration and development. The candidate will investigate a) migratory fish and their decisions to stay or move under particular light conditions, and b) study the effect of ALAN on the development of individual variation in behaviour and underlying physiology of the fish. The work will be conducted both outdoors and in the lab. Outdoor activities will include field respirometry and telemetry of migratory eels and sticklebacks, and lab work will consist of exposing migrating fish to ALAN in a swimming flume (the Migradrome).

This PhD position is one of in total 25 positions at the core of the BioClock consortium, funded by the Dutch Research Council (NWO) in the framework of the Dutch Research Agenda (NWA). BioClock is a national consortium in which academic institutes, societal partners, and industry join forces to address a broad spectrum of fundamental and applied research questions on the circadian clock in modern society. As a PhD candidate in the BioClock consortium, you will get the opportunity to actively participate in this multidisciplinary team effort. See for more information about the BioClock consortium.


  • MSc-degree in animal behaviour and/or physiology or a related discipline;
  • Interest in and basic understanding of the biological clock;
  • Affinity with ecology and conservation, in particular migratory fish and aquatic environments;
  • English conversation, presentation and writing skills;
  • Understanding of statistics;
  • Experience with R and PYTHON;
  • Interest in fundamental and applied science .     


We offer a full-time position for initially one year. After a positive evaluation of the progress of the thesis, personal capabilities and compatibility the appointment will be extended by a further three years. Salary range from € 2.395,-  to € 3.061,-  gross per month (pay scale P in accordance with the Collective Labour Agreement for Dutch Universities).

Leiden University offers an attractive benefits package with additional holiday (8%) and end-of-year bonuses (8.3 %), training and career development and sabbatical leave. Our individual choices model gives you some freedom to assemble your own set of terms and conditions. Candidates from outside the Netherlands may be eligible for a substantial tax break.

All our PhD students are embedded in the Leiden University Graduate School of Science. Our graduate school offers several PhD training courses at three levels: professional courses, skills training and personal effectiveness. In addition, advanced courses to deepen scientific knowledge are offered by the research school.

Leiden University is strongly committed to diversity within its community and especially welcomes applications from members of underrepresented groups.

Additional information

Enquiries can be made to Dr. Christian Tudorache. If you have any questions about the procedure, please contact Sylvia Maas, email


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