chigoe

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Related to Tunga penetrans: chigoe flea

chigoe

(chĭg`ō) or

jigger,

small parasitic fleaflea,
common name for any of the small, wingless insects of the order Siphonaptera. The adults of both sexes eat only blood and are all external parasites of mammals and birds. Fleas have hard bodies flattened from side to side and piercing and sucking mouthparts.
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 (Tunga penetrans) of the tropics and subtropics, including the S United States. Humans and their domestic animals are the main hosts. The fertilized female bores into the flesh (usually of the feet or legs) and feeds on the blood causing a painful, pustulous sore. She retains her eggs in her abdomen, which swells to the size of a pea. The eggs are expelled outside the host and hatch in the soil, undergoing complete metamorphosis. Significant infestations can lead to severe inflammation, ulceration, and fibrosis and in more extreme cases gangrene, sepsis, and even death. The chigoe is sometimes confused with the chiggerchigger,
minute, six-legged, reddish larva of the harvest mite, one of various red bugs widely distributed throughout the world and common in the S United States. Attaching itself by its mouthparts to the skin of its vertebrate host, the chigger injects saliva that destroys
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. The chigoe is classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, class Insecta, order Siphonaptera.
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chigoe

a tropical flea, Tunga penetrans, the female of which lives on or burrows into the skin of its host, which includes man
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
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References in periodicals archive ?
Tungiasis under dermoscopy: in vivo and ex vivo examination of the cutaneous infestation due to Tunga penetrans. An Bras Dermatol.
Van Marck et al., "Investigations on the biology, epidemiology, pathology and control of Tunga penetrans in Brazil: I.
In total, 610 were infested with Tunga penetrans, resulting in a point prevalence of 53% (95% confidence interval, 50%-56%), although 65% had experienced the flea in the past month.
An excisional biopsy from the nodule was performed which revealed the characteristic exoskeleton of the flea Tunga penetrans as well as its internal organs and eggs (Figure 1).
(3) Tunga penetrans most frequently attaches to the lower extremities.
We used 35 local terms (nigua, nihua, niua, pique, pigue, piqui, piki, pico, sico, seccec, chegoe, chego, chigger, puce chique, puce de sable, chique, chica, bicho de pe, bicho do porco, pulga de areia, jatecuba, jigger, chicque, sand flea, tchike, tschike, sike, xique, ckicke, aagrani, atten, tom, tu, tungay, and tunga) and 9 scientific terms (Pulex minimus cutem penetrans Americanus, Pulex minutissimun nigricans, Acarus fuscus sub cutem nidulans proboscide acutiore, Pulex penetrans, Rhynchoprion penetrans, Sarcophaga penetrans, Dermatophilus penetrans, Sarcopsylla penetrans, and Tunga penetrans).
irritans 9-24 Xenopsylla brasiliensis 25 Tunga penetrans 26 Djalusene P.
canis Cats, dogs, other animals Echidnophaga gallinacea Domestic fowl, Rattus rattus Tunga penetrans Humans, dogs, goats Xenopsylla brasiliensis Rattus rattus, Mastomys natalensis Flea species composition, % Domestic flea species Low * High ([dagger]) Pulex irritans 61.5 75.2 Ctenocephalides felis, C.
With a length of <1 mm, Tunga penetrans is the smallest known flea species (27).