This is a preview. Log in through your library . Abstract We investigated seasonality of gender differences in the patterns of flea infestation in nine rodent species to test if sex-biased parasitism ...

The phenomenon of intraspecific germ cell parasitism may reveal a theoretical puzzle to the concept of Darwinian selection. In natural chimeras of the colonial protochordate Botryllus schlosseri, ...

Many animal species add their eggs to the brood of other species to benefit from the latter’s brood care. This is called brood parasitism. Researchers recently studied brood parasitism in two ...

Today, 150 years after Darwin’s epochal “On the Origin of Species,” many questions about the molecular basis of evolution are still waiting for answers. How are signaling pathways changed by genes and ...

Biologists have demonstrated that 'evolutionary experience' as well as learning protects cichlid fish from the brood parasitism practiced by the African cuckoo catfish. There are other animals besides ...

In the late 19th century, when scientists first discovered the single-celled creature called Nephromyces, they thought it was a parasitic fungus. They were wrong ...

The blood fluke may be the ultimate parasite. This ingenious flatworm comes of age inside a tiny snail host before entering its real host—humans—directly through the skin and burrowing into the ...

As the planet’s most expansive ecosystem, the deep sea can be a tough place to find a mate. Though, scientists say, some deep-sea anglerfishes evolved a unique method of reproduction that ensures that ...

The US Commerce Department released figures Friday showing that the US economy contracted sharply, shrinking at an annualized rate of 0.7 percent in the first three months of this year. Yet despite ...