The bruce effect in mice

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網頁2024年11月24日 · EXPERIMENTS on the effect of certain oral progestogens during early pregnancy, in continuation of previous observations1 on ... An Exteroceptive Block to … 網頁Release of prolactin by the anterior pituitary is under the control of neural stimuli and corticosteroids and is influenced by estrogen and oxytocin Studies with hormones pituitary transplants brain lesions and tissue culture primarily in rats and mice are reviewed The ...

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網頁2024年8月9日 · The Bruce effect in rodents may be an adaptation in fluctuating populations to breeding in single-female–single-male breeding units at low densities in the increase … 網頁The Bruce effect has also been reported in deer mice (Bronson & Eleftheriou 1963), voles (Clulow & Langford 1971)andgerbils(Rohrbach1982).The current study was designed to explore the... uf lunch break policy

Bruce Effect - an overview ScienceDirect Topics

網頁2024年7月15日 · Bruce Effect. During the preimplantation period (first 4 days of pregnancy), introduction of a foreign male or his scent will result in spontaneous … 網頁2013年7月17日 · The scent of a novel male can elicit pregnancy block in recently mated female mice ( Mus musculus ), a phenomenon known as the Bruce effect. Despite … 網頁2016年3月2日 · Bruce effect was found to more likely occur when the odors of the male mice are different and, in case of inbred mice, males from different strains were more effective in inducing Bruce effect. In the experiments in Fig. 3.1, two different strains of mice, Balb/c and the F1 of cross between CBA/2 and C57BL/6 were used. ufly academy

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網頁2024年3月20日 · The Whitten effect occurs when a group of female mice are exposed to the urine produced by a male mouse. The male’s urine contains certain volatile, or airborne, pheromones that affect the hormonal processes of the females that control their reproductive status.[3] The Bruce effect, or pregnancy block, is the tendency for female rodents to terminate their pregnancies following exposure to the scent of an unfamiliar male. The effect was first noted in 1959 by Hilda M. Bruce, and has primarily been studied in laboratory mice (Mus musculus). In mice, pregnancy can only … 查看更多內容 In an experiment published in 1959, zoologist Hilda Bruce of the National Institute for Medical Research in London housed pregnant mice with male mice that were not the father of the carried embryo. As a result, the … 查看更多內容 • Coolidge effect • Lee–Boot effect • Vandenbergh effect • Whitten effect 查看更多內容 Detection of pheromones The vomeronasal system serves as a "vascular pump" that, stimulated by the presence of a novel male, actively draws in substances. … 查看更多內容 In order to have evolved and persisted in the population, the Bruce effect must afford individuals a fitness advantage. The possible advantages of pregnancy block are widely … 查看更多內容 • de la Maza, Helen M.; Wolff, Jerry O.; Lindsey, Amber (1999). "Exposure to strange adults does not cause pregnancy disruption or infanticide in the gray-tailed vole". Behavioral Ecology and Sociobiology. 45 (2): 107. doi: • Kenney, A. McM.; Evans, R. … 查看更多內容 uf lsu highlights網頁2024年7月5日 · Abstract. Bruce effect or alien male–induced implantation failure is a well-studied phenomenon in mice. The presence of stud male during exposure to an alien ma Experiment 2: critical period for imprinting nonpheromonal cue P value of pair-wise comparison of the incidence pregnancy using Fisher’s Exact test revealed that there was … thomas edition radio

"網頁Several primer pheromone effects in laboratory mice are now well known. These include the Whitten, Bruce, Vandenbergh, and Lee-Boot effects. The first three phenomena are … " - The bruce effect in mice

The bruce effect in mice

An Exteroceptive Block to Pregnancy in the Mouse Nature

網頁2024年3月7日 · The Bruce effect predicts that the coefficient for year t −1 will be significantly ( P < 0.05, one-tailed test) < 0. We include year t and t −2 in the equation as falsification tests because our argument implies they should not yield significant coefficients. (1) Mt is the number of male births in year t. 網頁of the Bruce and Vandenbergh effects in mice (Mus musculus) Adam C Guzzo, Jihwan Jheon, Faizan Imtiaz and Denys ... Bruce effect ( deCatanzaroet al. 2006, 2011) and reproductive tract growth in ...

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網頁The luteal function in newly inseminated female mice following exposure to alien males was investigated. The corpora lutea (CL) of newly inseminated females exhibited high delta 5 … 網頁2024年2月28日 · Mating in the afternoon and checking early in the morning is a good strategy. Mating success is highest on day 3 of mating: 40–50% of plugs are observed then. Don’t give up on your animals too early. The estrus cycle is 4 days long, so keep checking for a copulatory plug for 4 days (5 at the most).

網頁2024年5月20日 · The Bruce Effect is one form of reproductive suppression, in which females block or terminate pregnancy to increase their lifetime reproductive … 網頁2024年10月23日 · The Bruce effect has been well studied in laboratory mice. Usually, exposure of a recently mated female only to urine from an unfamiliar male can cause …

網頁2024年10月12日 · The Bruce effect has been well studied in laboratory mice. Usually, exposure of a recently mated female only to urine from an unfamiliar male can cause pregnancy block. Pregnancy block is not observed within the same strain of mice, but it occurs with specific combinations of different strains. 網頁The Bruce effect occurs when a recently mated female mouse aborts if exposed to the urine odor of a male genetically different from the stud male (Figure 9). This unfamiliar male …

網頁2024年8月23日 · In the Bruce effect, a mated female mouse becomes resistant to the pregnancy-blocking effect of the stud. Various lines of evidence suggest that this form …

網頁2009年2月25日 · There was no evidence that male social status influenced the Bruce effect. Mated females spent more time near a novel male when it was dominant across all time periods ( F1,10 =7.94, p =0.018; figure 3 ), confirming the well-established preference of female mice for dominant males ( Hurst 1987 ). ufly2網頁The Bruce effectoccurs when females terminate pregnancies after some form of sensory exposure (olfactory, visual, auditory, or tactile) to non-sire males. Importantly, although non-sire males may exhibit aggression towards females, aggression from males is not necessaryto elicit the Bruce effect. ufl technology pty ltd網頁Approved by IACUC 01/20/2016 Re-approved 04/20/2024 2) Whitten Effect: Male mouse urine contains a pheromone that induces estrus in previously suppressed females (see Lee-Boot effect) within three days. 3) Bruce effect: Also known as pregnancy block thomas edison years of life網頁1993年12月1日 · THE BRUCE EFFECT 1171 Bruce effect) is a function of the accessory olfactory (vomero- nasal) system and its central projections to the hypothalamus and that … thomas editions網頁2024年7月15日 · The Bruce effect has been studied and described thoroughly in rodents; however, observations have also been performed for other species [9,14,[30], [31], [32], [33]]. In a feral horse population, Berger [34] observed forced copulations by stallions when taking over a band of mares that he concluded led to abortions of early pregnancies. thomas edlund boden網頁2024年10月29日 · It is entirely possible that your male or female mice will behave differently during their testing period if they are being tested simultaneously near a mouse of the opposite sex (e.g., the Bruce effect in females ). thomas edition calculus 14th edition網頁Animal Research International (2009) 6(3): 1077 – 1081 ARI 2009 6(3): 1077 – 1081 www.zoo-unn.org Males non-enhancement of Bruce and Whitten effects in females albino mice 1079 Table 1: The reproductive indices of the mice groups during the first round of thomas edlund