| 单词 | estrus |
| 例句 | On about the 18th day hormonal changes are initiated by the pituitary control and on the 22nd or 23rd day the individual enters kemmer, estrus. The Left Hand of Darkness 1969-03-01T00:00:00Z Even mainstream trainers would drop pennies in mares’ water buckets to halt estrus, or exhaust themselves trying to get a mane that fell to the left—a bad omen—to fall to the right. Seabiscuit: An American Legend 2001-01-01T00:00:00Z Her estrogen is up because she’s been brought into estrus by the smell of her partner. Chemistry makes us cheat 2012-09-11T13:00:00Z In particular, the stress hormone cortisol suppresses the secretion of reproductive hormones and can disrupt estrus cycles. Are zoo animals happy? There’s a simple empathy test we can apply 2017-04-16T04:00:00Z In the other, the whales weren’t pregnant during the first massive progesterone surge, but were instead experiencing a prolonged state of estrus or ovulating. A 23-Month Pregnancy? Scientists See Hints in Bowhead Whales. 2023-07-25T04:00:00Z Otter moms will often go immediately into estrus if they lose a pup. A renegade sea otter is terrorizing California surfers: 'It's a little scary' 2023-07-12T04:00:00Z Females of these species mate only during the estrus phase of the cycle. Biology for AP Courses 2022-06-09T00:00:00Z Instead, a bull spends his annual two- or three-month stint of erotic drive searching for willing females in estrus, or fighting with other males in musth, all the while eating relatively little. What Has Four Legs, a Trunk and a Behavioral Database? 2021-06-04T04:00:00Z Females also occasionally checked in, leaving their mark when in estrus. Male cheetahs leave messages at ‘cat bars.’ Knowing these locales could help save the species 2020-12-07T05:00:00Z “We thought, maybe the swamp wallaby is pushing estrus back into pregnancy so it has a longer period of receptivity to find a male in the wild.” This Mom Is Still Pregnant. But She’s Already Having Another Baby. 2020-03-02T05:00:00Z The animals are in estrus for only 24 to 72 hours each year. Could pandas get caught in the U.S.-China trade war? 2019-08-26T04:00:00Z In female sheep, the estrus cycle is coordinated by the length of the day and does not begin until day length shortens. Biology for AP Courses 2022-06-09T00:00:00Z Female pandas are in estrus for only 24 to 72 hours each year and also can have false pregnancies. Giant panda Bei Bei turns 4 this week, but his days in Washington are numbered 2019-08-21T04:00:00Z They are in estrus for only 24 to 72 hours each year. Giant panda at National Zoo may be pregnant 2019-08-07T04:00:00Z For starters, giant pandas are in estrus for only 24 to 72 hours each year. Panda watch: National Zoo’s Mei Xiang was artificially inseminated overnight 2019-03-29T04:00:00Z Bulls mount cows and baboons do whatever; but human females do not have estrus or go into heat. The Radical Style of Andrea Dworkin 2019-03-25T04:00:00Z Burrito, the only male, trails behind Jamie, who is in estrus. Chimp research is over, but hundreds are still in labs. A tiny Washington sanctuary is helping them. 2018-11-22T05:00:00Z They are only in estrus or able to get pregnant for 24 to 72 hours each year. ‘Paws crossed!’: Mama panda at National Zoo is artificially inseminated 2018-03-02T05:00:00Z Wells says one of the most striking new pieces of information we’ve discovered is that female squirrels don’t only enter estrus once or twice a year, as most previous scientific evidence indicated. Squirrel Sex Is Complicated 2018-01-19T05:00:00Z As a female panda is about to reach peak estrus, experts said, these behaviors increase in frequency. Panda watch: National Zoo’s Mei Xiang was artificially inseminated overnight 2019-03-29T04:00:00Z Mata Hari goats take the gambit one step further—they are female goats outfitted with hormonal implants that induce a permanent state of estrus, so that they seek and attract male goats. Could Genetic Engineering Save the Galápagos? 2017-11-01T04:00:00Z “Synchronized estrus is thought to increase reproductive success in the pride,” says Mweetwa, a National Geographic emerging explorer. Our Favorite Lion Videos Reveal the Power of Predators 2017-08-10T04:00:00Z Keepers said in the past week, Mei Xiang has been restless, wandering her yard and doing scent-marking and vocalizing — “all behaviors that increase in intensity before she reaches peak estrus.” ‘Paws crossed!’: Mama panda at National Zoo is artificially inseminated 2018-03-02T05:00:00Z Mei Xiang, who is 18 years old and has birthed three cubs at the zoo, has been showing signs over the past few weeks of being in estrus. National Zoo’s giant panda is in heat and may be ready to breed soon 2017-05-23T04:00:00Z But one of the females was in estrus, her rump exceptionally pink and swollen, and four males in the group were too excited to sleep. Beware the Bonds of Female Bonobos 2016-09-10T04:00:00Z “The closer it gets to estrus, it gets a little bit more high-pitched and a little bit more frantic,” Thompson said. When pandas squeak and make other noises, what are they saying? 2015-11-23T05:00:00Z Normally, males kill cubs to bring their mothers back into estrus. Santa Monica's Mountain Lions Are Stuck on an Island, and Fast Disappearing 2015-11-23T05:00:00Z If he detects estrus, he’s good to go. 9 interesting facts about sex in the animal kingdom 2015-10-27T04:00:00Z Zookeepers and scientists are closely monitoring the levels of estrogen and progesterone in the panda mom’s urine to determine when she is in “peak estrus.” National Zoo’s giant panda is in heat and may be ready to breed soon 2017-05-23T04:00:00Z Suddenly, three older, high-ranking female bonobos bolted up from below, a furious blur of black fur and swinging limbs and, together with the female in estrus, flew straight for the offending males. Beware the Bonds of Female Bonobos 2016-09-10T04:00:00Z The researchers analyzed 293 scientific articles that looked at a range of traits in both male and female mice at varying stages of the latter’s estrus cycle. Can Female Mice Improve Autism Research? 2015-10-20T04:00:00Z Rather, in most zoos one male is isolated from one female until the fateful day of estrus; and when the moment arrives, neither is socialized to know what to do. Five myths about pandas 2015-08-28T04:00:00Z Goodall laughed at O’Malley’s video, which showed a young female in estrus shaking a tree branch in a vain attempt to gain the attention of a nearby male. Jane Goodall Is Still Wild at Heart 2015-03-13T04:00:00Z But including female mice in studies drives up the costs, because his team must do extra experiments to control for the females’ estrus cycles. Health Researchers Will Get $10.1 Million to Counter Gender Bias in Studies 2014-09-23T04:00:00Z In fact, the word estrus, which scientists use to denote the fertile part of a female’s cycle, is derived from the Greek word “oistros,” which means gadfly. When It Comes To Sex, We Are All Animals 2014-09-16T04:00:00Z “We’ve looked explicitly to see how the estrus cycle affects the brain across different stages of the cycle,” he says. Can Female Mice Improve Autism Research? 2015-10-20T04:00:00Z For example, in male chimpanzees, testosterone is released when the females go into estrus. Touching a Nerve: Exploring the Implications of the Self as Brain, Part 2 [Excerpt] 2013-07-27T13:45:00.477Z We rarely observe a female who mates more than once per estrus. [Technical Response] Response to Comments on “Bateman in Nature: Predation on Offspring Reduces the Potential for Sexual Selection” 2013-05-02T17:56:04.117Z “Hunting with estrus, you get 100 percent of a deer’s attention.” Odd Jobs: Deer Urine Farmer 2012-08-31T23:52:58Z And January is the period that I predicted he would be in musth because that's when the most females would be in estrus. Scientist at Work Blog: Hope Returns to Mushara 2012-07-20T21:16:40Z The estrus period lasts roughly three days in female spotted hyenas, so it is likely that Oakland will mate with Baez multiple times while she is in heat. Scientist at Work: How Spotted Hyenas Mate 2011-07-19T18:05:56Z Male elephants, such as this one, "listen" to calls from females in estrus with their feet and trunks. Stealth percussionists of the animal world 2011-03-22T16:15:00.347Z At estrus, females ovulate about seven eggs, and all are fertilized. [Technical Response] Response to Comments on “Bateman in Nature: Predation on Offspring Reduces the Potential for Sexual Selection” 2013-05-02T17:56:04.117Z The one question they get asked most often, Mr. Collora says, is how they know the best time to harvest estrus urine. Odd Jobs: Deer Urine Farmer 2012-08-31T23:52:58Z The fact that two couplings were observed over a 5-day period indicates normal estrus in the female, and a normal response in the male. An Experimental Translocation of the Eastern Timber Wolf 2011-01-21T03:00:13.917Z For years, her social life was arranged around the panda estrus cycle. Devra G. Kleiman, 67, Biologist Whose Work Transformed Zoos 2010-05-09T02:26:00Z Heape distinguishes between the "pro-estrum," or preliminary period of congestion, in female animals and the immediately following "estrus," or period of desire. Studies in the Psychology of Sex, Volume 3 Analysis of the Sexual Impulse; Love and Pain; The Sexual Impulse in Women Instances of the larvae of the estrus or the bot-fly in the skin are not uncommon. Anomalies and Curiosities of Medicine Matas has described a case in which the estrus larvae were found in the gluteal region. Anomalies and Curiosities of Medicine |
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