The evolution of psychiatric disorders and human personality traits

In a new paper published in Evolution Letters, a research team from Tohoku University reveal the evolution of a gene related to human-unique psychiatric traits. Here, authors Daiki Sato and Masakado Kawata tell us more about their findings. How and why unique human characteristics, such as highly social behavior, languages, and complex cultures, have evolved … Continue reading The evolution of psychiatric disorders and human personality traits

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The influence of the beginning of life on the end: A silver-spoon for senescence?

Why do individuals vary in how quickly they age? Eve Cooper explains what her new research tells us about the effect of developmental environment on senescence. As humans, the process of senescence - experiencing physiological declines as we age - is a seemingly inescapable constraint of our own biology. But why is it that we … Continue reading The influence of the beginning of life on the end: A silver-spoon for senescence?

Does sexual selection help or hinder population performance?

A new study published today in Evolution Letters shows that populations with an evolutionary history of strong sexual selection are able to invade competitor populations more rapidly. Here, lead author Dr Joanne Godwin tells us more. Costs: sexual selection vs. natural selection No discussion of sexual selection is complete without the clichéd picture of a … Continue reading Does sexual selection help or hinder population performance?

Speciation on the beach: solving the mystery of the most misidentified marine organism in the world

In our latest author blog, Rui Faria, Kerstin Johannesson, Mark Ravinet, and Roger Butlin explain how their intensive study of an intertidal hybrid zone has shed new light on the processes of divergence and speciation. The rough periwinkle, Littorina saxatilis, is a world champion when it comes to complicating the life of a biologist trying … Continue reading Speciation on the beach: solving the mystery of the most misidentified marine organism in the world

Taking tests of the predictability of evolution one step further

Recent evidence suggests that if we replayed evolution from the same starting point, in the same environment, it would proceed in a predictable manner, with certain genes being repeatedly selected. But what about in a more realistic world, where environments differ? Dr Caroline Turner provides new insights from her experimental study published today in Evolution … Continue reading Taking tests of the predictability of evolution one step further

Shaping evolution: selection versus constraint

In our new author blog, Joel McGlothlin explains how natural selection and genetic constraint interact to shape adaptive radiations. Ever since the Modern Synthesis of the early 20th century, biologists have had a pretty good understanding of how evolution works. Mutation generates genetic variation in a population, and natural selection sorts through it, keeping things … Continue reading Shaping evolution: selection versus constraint

Explaining Large-Scale Diversity within Midas Cichlid Fishes

A new study published in Evolution Letters capitalises on a natural experiment to shed light on when and how species diversify. Luke Turner reports: Speciation occurs when a new species is formed from a pre-existing one, and can take place due to a variety of ecological factors. This diversification is not equal among all groups of … Continue reading Explaining Large-Scale Diversity within Midas Cichlid Fishes

Evolution Letters 1st Anniversary Collection – Editors’ Picks

Evolution Letters is celebrating its first birthday and so we asked the editorial board to think about some of their favourite papers from the first year. It was always the aim of the journal, and the two societies that founded it, to promote the best research in Evolutionary Biology. We think the papers we’ve picked … Continue reading Evolution Letters 1st Anniversary Collection – Editors’ Picks