Parasites often cause changes in the growth and reproduction of their hosts. For example, during parasitic infections, tiny algae-eating crustaceans known as water fleas sometimes become sterile and ...

When the water flea senses predators in its environment, it suits up, growing tail spines, a pointy helmet and other armor. Now, researchers have sequenced the genome of the water flea, providing ...

The E75 protein is a key regulator of some biological rhythms through interactions with nitric oxide. Suppression of E75 results in longer molt cycles and reduced numbers of offspring in the water ...

Biologists sized up an unlikely natural phenomenon: when parasitism actually causes the number of hosts to increase, an effect known as a hydra effect. A study of common water fleas and their fungal ...

Duluth, Minnesota — On a mild September morning on the aft deck of the research vessel Blue Heron, Donn Branstrator sniffed the contents of a sampling bottle that some graduate students had just ...