Published Deadline Location
27 Jul 24 Sep Leiden

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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

Job description

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.


Leiden University


  • 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 .     

Conditions of employment

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.


Leiden University

The Faculty of Science is a world-class faculty where staff and students work together in a dynamic international environment. It is a faculty where personal and academic development are top priorities. Our people are committed to expand fundamental knowledge by curiosity and to look beyond the borders of their own discipline; their aim is to benefit science, and to make a contribution to addressing the major societal challenges of the future.

The research carried out at the Faculty of Science is very diverse, ranging from mathematics, information science, astronomy, physics, chemistry and bio-pharmaceutical sciences to biology and environmental sciences. The research activities are organised in eight institutes. These institutes offer eight bachelor’s and twelve master’s programmes. The faculty has grown strongly in recent years and now has more than 2300 staff and almost 5000 students. We are located at the heart of Leiden’s Bio Science Park, one of Europe’s biggest science parks, where university and business life come together. For more information, see the website of the Faculty of Science.

The research within the Institute of Biology Leiden (IBL) aims to work on the science base of biodiversity and health, which is reflected in our leading principle Harnessing Biodiversity for Health. We perform innovative curiosity-driven research to answer fundamental questions, and solutions-driven research to help solving major societal challenges. The latter include protecting nature’s biodiversity, creating sustainable biotechnology and agriculture and increasing good health. Our research focuses on four Research Themes: Bioactive Molecules, Host-Microbe Interactions, Development & Disease and Evolution & Biodiversity. Located in a thriving scientific environment with our Faculty of Sciences,  Naturalis Biodiversity Centre, the Leiden University Medical Centre and the Leiden Bioscience Park, IBL offers an exciting, internationally oriented and inclusive place to work and study.  


  • Postdoc; PhD
  • Natural sciences
  • University graduate
  • 21-398



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