Study resolves the position of fleas on the tree of life

A study of more than 1,400 protein-coding genes of fleas has resolved one of the longest standing mysteries in the evolution of insects, reordering their placement in the tree of life and pinpointing who their closest relatives ...

Using water fleas, researchers investigate adaptive evolution

Researchers from The University of Texas at Arlington resurrected the preserved eggs of a shrimp-like crustacean to examine long-standing questions about adaptive evolution, reporting the results in the journal Proceedings ...

How seasonal allergies affect your pet

With an uptick in pollen comes the torturous sneezing and watery eyes. Pets get seasonal allergies, too, but they exhibit discomfort in different ways.

Disrupting key protein alters biological rhythms in water flea

Researchers from North Carolina State University have shown that 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 ...

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Flea

Ceratophyllomorpha Hystrichopsyllomorpha Pulicomorpha Pygiopsyllomorpha

Aphaniptera

Flea is the common name for insects of the order Siphonaptera which are wingless insects with mouthparts adapted for piercing skin and sucking blood. Fleas are external parasites, living by hematophagy off the blood of mammals (including bats and humans) and birds.

Some flea species include:

Over 2,000 species have been described worldwide.

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