A male of the Speckled Wood butterfly (Pararge aegeria) initate a courtship without success. The female is recently mated with another male and hence not receptive to the male's mating attempts. The butterflies shown in this video are from Madeira, but the Speckled Wood butterfly is also a common species in Sweden. The Speckled Wood butterfly has successfully been used as a model organsim in several fields in biology, such as beavioural ecology and life history evolution.

Welcome to the Department of Zoology

The Department of Zoology has a long history, but is also very much with its time. It was founded in 1880, as the first at Stockholms University, and is continously changing to make room for new exciting research fields. The divisions for zoological ecology, ethology, morphology and population genetics are located in Arrheniuslaboratorierna, while systematics och evolution is mainly found at the Swedish Museum of Natural History. We also have a well-equipped research station a few miles south of Stockholm


Our current research is focused on animal evolution, ecology and behaviour, but within a broad spectrum from nervous system to ecosystem - on model organism from fruit flies and butterflies to fishes, birds and arctic foxes. Not even human is excluded - we take part in the interdisciplinary Centre for the study of Cultural Evolution. As part of the research programme Ekoklim we study ecological effects of the climate change. Our research is also theoretical within Stockholm Univerisity profile area biological modelling.


Mål för genetisk variation i Östersjön uppfylls inte

Genetisk variation, som utgör grunden för alla arters långsiktiga överlevnad, åsidosätts i marina skyddade områden i Östersjön. Det visar en ny tvärvetenskaplig studie som genomförts av forskare vid Stockholms universitet och Luleå tekniska universitet. Forskarna har granskat vad internationella överenskommelser säger om genetisk mångfald och hur detta sedan omsätts i praktiken.

Small brain is good for the immune system – if you are a fish

Having a small brain may provide immune benefits, at least if you are a guppy. A new study published in the journal Proceedings of the Royal Society shows that guppies with smaller brains have stronger immune responses than guppies with larger brains.