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Feisty fish and birds with attitude: Why does evolution not lead to identical individuals?

 “Survival of the fittest” is synonymous with adaptive evolution. This catchy phrase suggests that all individuals within a population become identical over time by developing “THE fittest” heritable traits. Yet, in nature, we observe many differences between individuals. For example, sticklebacks (tiny fish) in the... click to read more

Views 1077
Reading time 3 min
published on Aug 31, 2024
Flowering plants outcompeted conifers

As evolutionary biologists, one of our major objectives is to understand how competition for resources regulates the appearance and extinction of species and can lead to the increase or decline of entire groups of species. This is particularly difficult to study because each group has... click to read more

  • Fabien L. Condamine | CNRS research scientist at CNRS, Institut des Sciences de l’Evolution de Montpellier, Montpellier, France
Views 4646
Reading time 4 min
published on Nov 26, 2021
Why so aggressive? Bringing the past into the present

When engaged in a conflict with another, many animals will behave aggressively. We see it in dogs at the dog park, in fish in a fish tanks, in people with bullies at school, and even flies at a garbage bin. However, precisely what motivates an... click to read more

  • Julia Kilgour | Postdoctoral Research Fellow at Department of Animal Sciences, Purdue University, West Lafayette, Indiana, USA
Views 4374
Reading time 3.5 min
published on Sep 23, 2020
The belligerence of breeding: female aggression after mating

Sex changes us. In addition to the overwhelming Puberty-Blues kind of way, sex induces physical changes that occur across the entire animal kingdom, from elephants to fruit flies. Yet, there's one glaring aspect of sex that few scientists have studied - female aggression. That's where... click to read more

  • Eleanor Bath | Postdoctoral Research Fellow at Christ Church College, Department of Zoology, University of Oxford, Oxford OX1 2JD, UK.
Views 17281
Reading time 4 min
published on Nov 1, 2017