Universe 25: The Mouse "Utopia" Experiment That Turned Into An ...
2021年7月22日 · In this study, he took four breeding pairs of mice and placed them inside a "utopia". The environment was designed to eliminate problems that would lead to mortality in the wild. They could...
Behavioral sink - Wikipedia
In his most famous experiment in the series, "Universe 25", [11] population peaked at 2,200 mice even though the habitat was built to tolerate a total population of 4000. Having reached a level of high population density, the mice began exhibiting a variety of abnormal, often destructive, behaviors including refusal to engage in courtship, and ...
John B. Calhoun’s Mouse Utopia Experiment and Reflections on …
2020年10月11日 · One of the more famous ethologists in recent decades was John B. Calhoun, best known for his mouse experiments in the 1960s when he worked for the National Institute for Mental Health. Calhoun enclosed four pairs of mice in a 9 x 4.5-foot metal pen complete with water dispensers, tunnels, food bins and nesting boxes.
This Old Experiment With Mice Led to Bleak ... - Smithsonian Magazine
2024年8月8日 · Working with rats between 1958 and 1962, and with mice from 1968 to 1972, Calhoun set up experimental rodent enclosures at the National Institute of Mental Health’s Laboratory of Psychology. He...
Mouse Heaven or Mouse Hell? - Science History Institute
2022年5月17日 · John Calhoun crouching inside Universe 25, his famous mouse-behavior experiment, February 1970. Officially, the colony was called the Mortality-Inhibiting Environment for Mice. Unofficially, it was called mouse heaven. Biologist John Calhoun built the colony at the National Institute of Mental Health in Maryland in 1968.
Universe 25: How A Mouse "Utopia" Experiment Ended In A …
2023年10月18日 · In this study, published in the Proceedings of the Royal Society of Medicine, he took four breeding pairs of mice and placed them inside a "utopia". The environment was designed to eliminate...
老鼠乌托邦 - 知乎 - 知乎专栏
2020年4月21日 · Mouse Utopia Experiment（老鼠乌托邦或者叫 老鼠世界 ）是生态学家John B. Calhoun进行的一场研究白鼠无限繁殖的实验，实验场里有边长2.7米，高1.4米的方形金属栅栏围成的空间，总共可以容纳3840只老鼠，里面配有供老鼠活动的隧道，可以通往老鼠的巢穴，并且有 …
John B. Calhoun - Wikipedia
It was here that his most famous experiment, the mouse universes (the most famous of which is universe 25), was created. [1] In July 1968, four pairs of mice were introduced into the habitat. The habitat was a 9-foot (2.7 m; 110 in; 270 cm) square metal pen with 4.5-foot-high (1.4 m; 54 in; …
Universe 25 Experiment | TS Digest | The Scientist
2024年5月28日 · Universe 25 was one long-term experiment in a series of mouse studies. The entire research series involved Calhoun’s constructed Mortality-Inhibiting Environment for Mice , and each universe examined separate mouse populations and conditions.
How 1960s Mouse Utopias Led to Grim Predictions for Future of ...
2015年2月26日 · Calhoun’s experiments, which started with rats an outdoor pen and moved on to mice at the National Institute of Mental Health during the early 1960s, were interpreted at the time as evidence of what could happen in an overpopulated world. The unusual behaviors he observed he dubbed "behavioral sinks."