The "prenatal education" of birds

　　Biologist Merlin Mariette of Deakin University, Australia, found that zebra finch parents will carry out "prenatal education" - when the ambient temperature is higher than 26 ℃, they will emit a different kind of abnormality to the eggs when they incubate the eggs. A distinctly different cry.

　　What are the zebra finch parents saying to the eggs? To find out, Mariette recorded the zebra finch's "prenatal call" and then divided the eggs that were about to hatch (5 days from hatching) into two groups for artificial incubation. During the incubation process, the researchers played the "prenatal chirping" to the first group of eggs, and the second group played the communication sounds between the adult birds. After hatching, they were returned to the nest to be raised by the parent birds.

　　The results showed that the "prenatal chirping" had a significant impact on the chicks: the chicks who received the "prenatal education" were born smaller and grew slower than other chicks, but gave birth to more as adults. offspring. That is to say, if the zebra finch chicks are about to be born in hot weather, their parents will conduct "prenatal education" to remind the unborn chicks that it is hot outside and grow slowly. This is because in a high temperature environment, if the chick grows slowly and has a smaller body size, it can reduce oxidative damage and additional energy consumption during development, which is beneficial to the health of the chick.

　　But how do zebra finch chicks understand their parents' "prenatal education" and change their size accordingly? Mariette proposed a conjecture that in the brain, auditory circuits are directly linked to areas that control emotion, reflex learning, and hormone production, so that sounds can directly affect biological behavior and physiology, such as hearing sad or happy music, people's Emotions can also be affected. Sounds experienced early in life can trigger the same spontaneous responses, with lasting effects, as this is a period of brain development and consolidation of connections, whose effects on physiology and morphology can last a lifetime. Therefore, when zebra finch chicks hear the "prenatal call" that means hot weather, they produce hormones that change their body shape.

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Zeigarnik effect

　　As a freelancer, you have to fight procrastination every day. "I've made up my mind many times, but I just can't change it. Is it because I'm slow or slow?". In fact, many procrastinations are irrational. Many obstructions are imagined by myself. So distract, postpone, avoid confrontation. It's cool to procrastinate, and it's cool to procrastinate all the time, so I can't do it. Concentration is also related to physical strength. When the physical strength is exhausted, it is even more difficult to concentrate. You’ll tell yourself: I’m too tired to do this—okay, another perfect procrastination. 　　In 1927, Bruma Zeigarnik's senior research found that people are more likely to care about unfinished and interrupted work than completed work. This is the Zeigarnik effect. For example, we often don't care much about what we have got, but we will especially cherish what we have worked hard but haven't got. Therefore, the TV series will tell you

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Hebei Xingang Pharmaceutical Co., Ltd.

Hebei Xingang Pharmaceutical Co., Ltd is located in the industrial park of Zhao County, Shijiazhuang, Hebei, near the world-famous ZhaoZhou Bridge. Our facility neighbors the Qinyin Expressway and 308 National Highway on the east, and it neighbors the Jingzhu Expressway and 107 National Highway on the west. It is located 30 km from Shijiazhuang High-speed Train Station and 50 km from Shijiazhuang International Airport. Our company mainly focuses on the research, production and retail of rifamycin and its derivatives, and pharmaceutical raw materials and intermediates. Our products mainly include, Rifamycin S Sodium, Rifamycin S, 3-Formyl Rifamycin SV, Rifamycin SV Sodium, Rifampicin, Rifandine, Rifaximin, Rifapentine, Rifabutin, Rilmenidine, and so on. We are currently the world’s main manufacturer of anti-tuberculosis drugs and rifamycin and its derivatives. Hebei Xingang Pharmaceutical Co., Ltd was established in 1996. Upon establishment, the company had a clear developmental goal o

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Hebei Xingang Pharmaceutical Co., Ltd.

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