botfly


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Related to botfly: human botfly

botfly,

common name for several families of hairy fliesfly,
name commonly used for any of a variety of winged insects, but properly restricted to members of the order Diptera, the true flies, which includes the housefly, gnat, midge, mosquito, and tsetse fly.
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 whose larvae live as parasites within the bodies of mammals. The horse botfly secretes an irritating substance that is used to attach its eggs to the body hairs of a horse, mule, or donkey. When the animal licks off the irritant, the larvae are carried into the host's mouth and later migrate to the stomach. They attach themselves to the lining, where they feed until ready to pupate, and then drop to the ground with the feces. The larvae, which may cause serious damage to the digestive tract and weaken the animal, can be eliminated by a veterinarian. Sheep botflies lay their eggs in the nostrils of the host without alighting. The larvae work their way up into the head cavities causing fits of vertigo known as blind staggers; failure to eat because of irritability may result in death. Old World species of this family attack camels, elephants, horses, mules, donkeys, and deer. The warble flies, also called heel flies, or bomb flies, parasitize cattle and other animals. The larvae, called cattle grubs or cattle maggots, penetrate the skin of the host immediately after hatching; they migrate through the flesh, causing irritability, loss of weight, and decreased milk production, and then settle under the skin of the back, producing cysts, or warbles. Breathing holes made in the warbles by the larvae damage the hide. A species of human botfly found in Central and South America attaches its eggs to a bloodsucking mosquito that it captures and then releases. When the mosquito comes in contact with humans or other warm-blooded animals, the fly eggs hatch and the larvae fasten to the mammal's skin. The larvae bore into muscle tissue; infestation is called myiasis. For control methods, see bulletins of the U.S. Dept. of Agriculture. The botflies are 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 Diptera. Horse botflies are classified in the family Gasterophilidae; sheep botflies and warble flies are classified in the family Oestridae; the human botfly is classified in the family Cuterebridae. See insectinsect,
invertebrate animal of the class Insecta of the phylum Arthropoda. Like other arthropods, an insect has a hard outer covering, or exoskeleton, a segmented body, and jointed legs. Adult insects typically have wings and are the only flying invertebrates.
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References in periodicals archive ?
The species of botfly recorded previously in our study area is P.
We used this criterion in our study because botfly parasitism occurred while nestlings were between 1 and 6 days of age.
We recorded: (1) body mass, (2) lengths of the beak, fight tarsus, and wing, and (3) parasite intensity (number of botfly larvae/nestling) for each nestling at each nest visit.
We did not observe abandonment of nests with nestlings in circumstances other than botfly parasitism.
We estimated the lethal effect of botfly parasitism by comparing nestling survival (proportion of nestlings that fledged) between nonand parasitized nests excluding nests that were depredated.
We used logistic regressions to analyze the association between botfly parasitism (binary dependent variable) and one or more independent variables.
Lethal and Sub-lethal Effects of Botfly Parasitism.
Characteristics of the Vegetation and Botfly Parasitism.
Botfly parasitism of Red-crested Cardinals increased during the breeding season, but was not significantly different across years.
Red-crested Cardinals start breeding in early October, but first records of botfly parasitism occurred in late December-early January.
Our results conducted in a temperate area close to the southern limit of the distribution of botflies indicate that botfly parasitism can lower host's reproductive success.
Open areas of grasslands that separate patches of forest may act as barriers for botfly dispersal.