Oestrus

(redirected from oestrous)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

Oestrus

 [es´trus]
a genus of botflies. O. o´vis deposits its larvae in the nostrils of sheep and goats and can cause ocular myiasis in humans.

Oestrus

(es'trŭs),
A genus of tissue-invading flies that cause myiasis in sheep; the head botflies in the family Oestridae. Oestrus ovis (a nose fly) is a grayish brown, robust, hairy, beelike botfly, imported from Europe, and now a serious pest in parts of the U.S.; larvae are deposited by the adult fly in the nostrils of sheep, and inch-long larvae develop in the paranasal sinuses, causing considerable mucous discharge and distress in old or weak sheep.
[G. oistros, gadfly]

Oestrus

/Oes·trus/ (es´trus) a genus of botflies. O. o´vis deposits its larvae in nasal passages of sheep and goats, and may cause ocular myiasis in humans.

oestrus

(ĕs′trəs)
n.
Variant of estrus.

es·trus

(es'trŭs)
That portion or phase of the sexual cycle of female animals characterized by willingness to permit coitus; readily detectable behavioral and other signs are exhibited by animals during this period.
Synonym(s): estruation, heat (2) , oestrus.
[G. oistros, mad desire]

Oestrus

A genus of flies whose larvae can parasitize humans and animals. The larvae can attach themselves with hooks to the CONJUNCTIVA and may cause serious damage to the eye.

Oestrus

a genus of bot flies in the family Oestridae.

Oestrus ovis
a widespread species that deposits its larvae on the nostrils of sheep and goats. Invasion of the nasal cavity causes irritation manifested by sneezing, nose rubbing, noisy breathing and nasal discharge. It may cause ocular myiasis in humans. Called also sheep nasal bot fly.

oestrus

see estrus.
References in periodicals archive ?
Expression of oxytocin, oestrogen and progesterone receptors in uterine biopsy samples throughout the oestrous cycle and early pregnancy in cows.
Only one study has found statistically meaningful, if indirect, support for such swaps, showing that male chimpanzees are more likely to hunt for monkeys when oestrous females are around.
Peripheral plasma progesterone concentration of cows during puberty, oestrous cycles, pregnancy and lactation, and the effects of under-nutrition or exogenous oxytocin on progesterone concentration.
Replenishment of LH stores of gonadotrophs in relation to gene expression, synthesis and secretion of LH after the preovulatory phase of the sheep oestrous cycle.
A review of oestrous behavior and detection in dairy cows.
Control of oestrous cyeles of heifers with a synthetic prostaglandin analogue.
In order to obtain embryos from natural cycle females mice of 6-8 wk age were not injected with any gonadotropins and oestrous were identified by examining the colour, moistness and degree of swelling of the vagina.
He is now renewing that call, and as he points out in a letter sent widely to British breeders today, and detailed on this page, there are already numerous artificial technologies - he names nine, including "[application of] Regu-Mate and other synthetic progestagens to mimic dioestrus, suppress oestrous behaviour, induce follicular development and supplement the mare's own progesterone levels during pregnancy", and "immunisation with stallion white blood cells to prevent repeated early abortion in immunologically deficient mares" - used to help conception along.
This distribution guaranties a similar number of females of the different oestrous cycle stages in each experimental group.