Department of Zoology

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Information for students and staff about the coronavirus

Stockholm University is monitoring the situation and follows the information and recommendations of the Swedish Public Health Agency and the Ministry of Foreign Affairs regarding this matter.

Sperm cells and egg

Females supercharge sperm evolution in animals

Why is sperm size among different animal species so variable? In a new article published in Nature Ecology and Evolution, researchers from Department of Zoology show that animal sperm evolution become supercharged only when sperm swim inside females.


Infertility poses major threat to biodiversity during climate change

Ecologists in international collaboration, including Rhonda Snook from the Department of Zoology, warn in a new study that heat-induced infertility in men will see some species fall under the effects of climate change earlier than previously thought.

Explaining graphic

Scientific tools could revert threatening genetic diversity crisis

A previously hidden biodiversity crisis is causing loss of resilience of ecosystems and loss of important opportunities for society. In a paper recently published in the journal BioScience, 28 scientists from 16 countries are documenting urgent problems with loss of genetic diversity and devise actions to solve the problem.

Two wolves

Mating with relatives? Not a big deal in nature

We usually assume that inbreeding is bad and should be avoided under all circumstances. But new research performed by researchers at Stockholm University, published in Nature Ecology and Evolution, shows that there is little support for this assumption.

Photo: T. Fransson

New insights on the rarely studied avian Indo-European flyway

Researchers at Department of Zoology and the Swedish Museum of Natural History have together with European researchers published the first detailed study of the migratory route of Common rosefinches by investigating the understudied avian Indo-European flyway.

Photo: L Dalén

World’s oldest DNA reveals how mammoths evolved

An international team led by researchers at the Centre for Palaeogenetics has sequenced DNA recovered from mammoth remains that are up to 1.2 million years old.

N Kolm

Rapid evolution of coordinated and collective movement

A new study led by Niclas Kolm published in Science Advances has used artificial selection to examine the evolution of collective motion and what other behaviors are affected when "a guppy turns into a sardine".


A new textbook on game theory in biology

Olof Leimar at the Department of Zoology is a coauthor on a new book about game theory in biology. The book was recently published by Oxford University Press and provides an up-to-date account of theoretical models of animal behaviour.

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