Parasitism evolved at least 223 times, far more than the previous estimate of 60. It arose more times in certain phyla (e.g., arthropods, nematodes, flatworms, and mollusks) than in others. Today, ...

The research team compared egg sac parasitism in the urban invasive brown widow spider to the desert white widow spider, the latter of which is native to Israel. Spiders may benefit from having fewer ...

Members of the vertebrate group including anglerfishes are unique in possessing a characteristic known as sexual parasitism, in which males temporarily attach or permanently fuse with females to mate.

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 ...

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 ...

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 ...

Distinguished by its unusual morphology and a reproductive system based on something called "sexual parasitism," the anglerfish represents a study in how life adapts to severe environmental ...

One of the most interesting topics discussed in my Ornithology class was about the “con artists” found in nature… Brood parasitism occurs when a female bird (the parasite) lays her eggs in the nest of ...