(n.) A dipterous insect of the family (Estridae, of many different species, some of which are particularly troublesome to domestic animals, as the horse, ox, and sheep, on which they deposit their eggs. A common species is one of the botflies of the horse (Gastrophilus equi), the larvae of which (bots) are taken into the stomach of the animal, where they live several months and pass through their larval states. In tropical America one species sometimes lives under the human skin, and another in the stomach. See Gadfly.
Example Sentences:
(1) Larvae of the nasal botfly, Oestrus ovis, were present only from January to July.
(2) We report a case in which the first larval stage of a rodent or rabbit botfly, Cuterebra sp., invaded the anterior chamber, produced a transient iridocyclitis, and adhered to the posterior cornea where it remained as a dead, slightly atrophic body.
(3) Sheep botfly (Oestrus ovis) conjunctival infestation is rare in North America but is common in other parts of the world.
(4) Three patients had conjunctival ophthalmomyiasis caused by the ovine nasal botfly.
(5) We saw two cases of cutaneous myiasis from the larvae of the botfly, Dermatobia hominis.
(6) We saw a 24-year-old man who returned from South America with cutaneous myiasis caused by larvae of the human botfly Dermatobia hominis.
(7) The paper describes the flight periods and dynamics of abundance of horse botflies, life span of females and males, effect of environmental factors on the activity of flies and their behaviour, potential fecundity of different species of botflies, duration of embryonal development, preservation of viability of larvae in egg membranes, localization of different stages of botflies in the host, and methods of their control.
(8) The entire syndrome was subsequently determined to be due to cutaneous myiasis caused by the larvae of Hypoderma lineatum, the cattle botfly.
(9) A case of botfly myiasis occurred in a patient who traveled to Brazil.
(10) Alongside with a high intensity of infection of horses with botfly larvae there was observed mass aberrant parasitism of horse botflies in farms of Astrakhan, Guryev and Uralsk Provinces, and in the Kalmyk ASSR in 1980-1981 and 1987.
(11) The main reasons are as follows: factors depending on the population density at the larval phase, the light day duration within the life cycle of the botfly females.
(12) During the winter months, 2nd and 3rd instar Rhinoestrus antidorcitis and R. vanzyli (nasal botflies) were present.
(13) The flight of the horse botfly begins from the second decade of June and ends in the second decade of September; the flight of the sheep botfly begins in the third decade of June and ends in the first decade of September.
(14) We report a case of cutaneous myiasis caused by the human botfly, Dermatobia hominis, in a soldier who had participated in military operations in Central America.
(15) Presented is a case of acute bilateral conjunctivitis in a healthy 28-year-old man with signs and symptoms resembling those of catarrhal conjunctivitis but resulting from infestation with larvae of the sheep nasal botfly.
(16) The mixed host inflammatory response surrounding the larvae included lymphoblasts, eosinophils, activated fibroblasts, mature histiocytes, mast cells, plasma cells, and Langerhans cells, indicating a complex interactive immunologic response to the botfly parasite.
(17) Infection with this parasite, botfly myiasis, is described in detail.
(18) Gasterophilus intestinalis was the most prevalent and abundant botfly larva recovered.
(19) Botfly infestation was analyzed in 1319 small mammals from varied habitats and elevations in upland Virginia, 1972-1974.
(20) A description of the life cycle of the tropical botfly, Dermatobia hominis, is presented.
Oestrus
Definition:
(n.) A genus of gadflies. The species which deposits its larvae in the nasal cavities of sheep is oestrus ovis.
(n.) A vehement desire; esp. (Physiol.), the periodical sexual impulse of animals; heat; rut.
Example Sentences:
(1) Basal 20 alpha DHP levels remained low until a sharp rise at mid pro-oestrus.
(2) Gilts that had already reached sexual maturity at the time of insemination showed a higher rate of oestrus and better litter size than immature animals.
(3) 2 Metabolism in vitro was high during met-oestrus and di-oestrus and low during pro-oestrus and oestrus; this variation in activity correlated with changes in Vmax of the enzyme without changes in Km.
(4) In spite of small corpora lutea and increased follicular activity, none of the prednisolone treated heifers showed signs of oestrogen influence, and the two animals slaughtered 26 days after the start of treatment, did not ovulate or show signs of oestrus.
(5) Serum concentrations of immunoreactive inhibin in oil-treated rats increased from metoestrus to pro-oestrus and decreased at oestrus.
(6) Only one inoculated goat became pregnant after the third oestrus.
(7) Two peaks of plasma FSH concentration were detected after the onset of oestrus.
(8) Pregnant cows showing oestrus were usually seen interacting with other oestrous cows in the sexually active group.
(9) The labelling index of rat mammary gland during oestrus, pregnancy and early lactation was studied in vitro.
(10) Ovarian activity was controlled for synchronization of oestrus by using progestagen-impregnated intravaginal sponges and multiple ovulations were induced by using exogenous gonadotrophin therapy.
(11) In the three E2 groups, 41.7, 62.5 and 37.5% of animals showed oestrus within 26 h of injection while in the control groups only one animal showed oestrus.
(12) When lergotrile mesylate was given on the morning of pro-oestrus, the LH surge was advanced.
(13) The kinetics of specific antibodies of the blood serum of sheep experimentally infested with 80, 160 and 1000 specimens of Oestrus ovis larvae was examined.
(14) On the basis of gained results it was concluded, that synchronized oestrus ewes on receiving PMSG in anoestrus season the ovarial response was more significant than in autumn breeding season.
(15) Rats were injected on D1 and killed at first oestrus.
(16) The oestrus cycle had no effect on levels of the three steroids measured.
(17) Granulosa cell responsiveness at an early (1-2 h) or late (14-16 h) stage of differentiation following the onset of oestrus [and presumably the LH surge] was studied in 16 cows.
(18) Second, the effectiveness of establishment of a cervical reservoir of spermatozoa, in ewes in which oestrus and ovulation have been controlled, has been re-examined.
(19) administered in a single dose at either 0900 h or 1800 h pro-oestrus, and on the morning of oestrus the rats were killed.
(20) Such transformation of steroid gestagens to oestrogens is likely to offer an explanation for the occurrence of oestrogen effects which had been observed during synchronised oestrus of cattle following oral application of 19-norgestagens.