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17 de may. de 2024 · flea, (order Siphonaptera), any of a group of bloodsucking insects that are important carriers of disease and can be serious pests. Fleas are parasites that live on the exterior of the host (i.e., are ectoparasitic).
Flea, the common name for the order Siphonaptera, includes 2,500 species of small flightless insects that live as external parasites of mammals and birds. Fleas live by ingesting the blood of their hosts.
Many species of fleas can feed on humans. The human flea, Pulex irritans, is less-commonly seen these in industrialized areas. This species is not an effective vector of disease but can serve as an intermediate host for the cestodes Dipylidium caninum and Hymenolepis nana.
15 de dic. de 2023 · The three most important flea species, in terms of global public health and veterinary relevance, are the house flea (Pulex irritans), the oriental rat flea (Xenopsylla cheopis), and the cat flea (Ctenocephalides felis).
There are 137 flea species representing 22 genera and 6 families that have birds as hosts, 5 species that are found on both bird and mammal hosts, and the remainder of the species are mammal specific.
The human flea (Pulex irritans) – once also called the house flea – is a cosmopolitan flea species that has, in spite of the common name, a wide host spectrum. It is one of six species in the genus Pulex; the other five are all confined to the Nearctic and Neotropical realms.
There are an estimated 2,000 species of fleas worldwide, and more than 300 types are found in the United States. The cat flea, Ctenocephalides felis, is the most common domestic flea. Other kinds of fleas include dog fleas, human fleas and rat fleas. What does a flea look like? Fleas are small, wingless, flat insects with three pairs of legs.
