Escalating arms race: Predatory sea urchins drive evolution

(Phys.org) -- Nature teems with examples of evolutionary arms races between predators and prey, with the predator species gradually evolving a new mode of attack for each defensive adaptation that arises in the prey species.

Ecologist overthrows generally accepted principles in ecology

(Phys.org) —Contemporary ecological theory assumes that differently sized individuals in a population are equally efficient in their use of food resources. Still this is only true in a very exceptional case. It is much ...

Researchers discover what is on the menu for dragonflies

Researchers from the Universities of Turku and Helsinki, Finland, have discovered the prey species of adult dragonflies and damselflies, as modern laboratory techniques enabled the study of the insects' diet. In the study, ...

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