Parasitoid wasps sometimes lay eggs in unsuitable host insects, a behavior that has traditionally been considered accidental. However, researchers at the University of Tsukuba have discovered that ...

Avian brood parasitism is an interspecific reproductive strategy in which parasites deposit eggs in the nests of hosts, transferring the burdens of incubation and chick rearing while imposing ...

For a long time, scientists believed that parasitic relationships between marine species developed much later in Earth’s history. But new fossil evidence from Morocco suggests otherwise. A recent ...