Sentences with phrase «wild guppies»

At its most posthumously successful, stored ghost sperm sired about one in four of the offspring among wild guppies released into a stream, evolutionary biologist Andrés López - Sepulcre of École Normale Supérieure in Paris and his colleagues report June 5 in Proceedings of the Royal Society B.

Not exact matches

Ecologists have shown that organisms in the wild can evolve rapidly — just 4 years for male guppies to become 15 % heavier — when placed into new environments (Science, 28 March, p. 1934).

Studies in the wild and the lab have mostly supported this idea, but guppies living in waterfall - strewn streams in Trinidad seem to buck the theory.

After graduation, I worked as a technician studying speciation in wild tomatoes and rapid adaptation in Trinidadian guppies before starting graduate school at the University of Toronto.