Related topics: species

Explaining differences in rates of evolution

Scientists look to fossils and evolutionary trees to help determine the rate of evolution – albeit with conflicting results. A new model by ETH researchers has helped to resolve these contradictions.

How the world's fastest muscle created four unique bird species

When the male bearded manakin snaps its wings at lightning speed, it's more than part of an elaborate, acrobatic mating ritual. The tiny muscle doing the heavy lifting is also the reason this exotic bird has evolved into ...

Evolution on the fast lane—One flounder species became two

A research group at the University of Helsinki discovered the fastest event of speciation in any marine vertebrate when studying flounders in an international research collaboration project. This finding has an important ...

Watching new species evolve in real time

Sometimes evolution proceeds much more rapidly than we might think. Genetic analysis makes it possible to detect the earliest stages of species formation and to gain a better understanding of speciation processes. For example, ...

Poisonous frogs more likely to face extinction, study finds

Scientists at the University of Liverpool have found that amphibians that use toxins to protect themselves against predators are at a higher risk of extinction than those who use other types of defence, which poses a challenge ...

Darwin 2.0: Scientists shed new light on how species diverge

Birds that are related, such as Darwin's finches, but that vary in beak size and behavior specially evolved to their habitat are examples of a process called speciation. It has long been thought that dramatic changes in a ...

Evolution of new species requires few genetic changes

Only a few genetic changes are needed to spur the evolution of new species—even if the original populations are still in contact and exchanging genes. Once started, however, evolutionary divergence evolves rapidly, ultimately ...

The endemic species of remarkable Fulgoromorpha from Iran

In terms of biodiversity richness, Iran is considered as an extremely complex area with wide ranges in the extremes of altitude, climate and temperature. The high biodiversity of the Iranian fauna is also the result of its ...

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