Thanks to a parasite, asexual reproduction catches on

Article Abstract:

Research is finding that asexual reproduction in many insects, assumed to be an evolutionary adaptation, is due to infection by the bacterium Wolbachia. The parasite lives in the ovaries and disrupts the sex life of its host, even eliminating males, to maintain a supply of cytoplasm for its offspring.

Parasites, Reproduction, Asexual, Asexual reproduction

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Life on the edge: rainforest margins may spawn species

Article Abstract:

A study of small forest birds called little greenbuls in Cameroon indicates that the transition zones called ecotones between rainforest and savanna play a major role in species diversity. The effects of natural selection apparently offset gene flow.

Environmental aspects, Biological diversity, Biodiversity, Evolution (Biology), Origin of species, Birds, Rain forest ecology

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Fraud and ethics charges hit stroke drug trial

Article Abstract:

The Second European Stroke Prevention Study has become controversial because of the use of placebos in evaluating the effectiveness of dipyridamole in preventing stroke. In addition, one of the doctors in the study may have fabricated data.

Investigations, Testing, Prevention, Clinical trials, Ethical aspects, Stroke (Disease), Stroke, Fraud in science, Science fraud, Dipyridamole, Placebos, Boehringer Ingelheim GmbH

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