Public Library of Science

The extraordinary evolution of REVs

A new study by Anna Maria Niewiadomska and Robert Gifford, of The Aaron Diamond AIDS Research Center, New York, reveals that reticuloendotheliosis viruses (REVs), which originated in mammals, spread to birds as a result of ...

dateAug 27, 2013 in Cell & Microbiology
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Do parasites upset food web theory?

Parasites comprise a large proportion of the diversity of species in every ecosystem. Despite this, they are rarely included in analyses or models of food webs. If parasites play different roles from other ...

dateJun 11, 2013 in Plants & Animals
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Cheating favors extinction

Cooperative behaviour is widely observed in nature, but there remains the possibility that so-called 'cheaters' can exploit the system, taking without giving, with uncertain consequences for the social unit ...

dateApr 30, 2013 in Evolution
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