Card #24: 🐀📈 Behavioral Sink & The Universe 25 Experiment
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'Behavioral sink' is a term invented by ethologist John B. Calhoun to describe a 📈 collapse in behavior that can result from overpopulation. The term and concept derive from a series of over-population experiments Calhoun conducted on brown 🐀 rats between 1958 and 1962. He later performed similar experiments on mice from 1968 to 1972. In the experiments, Calhoun and his researchers created a series of "rat utopias". They created enclosed spaces where rats were given unlimited access to food and water. There were no predators. They created a perfect environment enabling unfettered 📊 population growth. At first, their population boomed, but as it grew too large, things fell apart. The mice got stressed and started fighting over space and resources, forming strict social hierarchies. This stress led to weird behaviors like obsessive grooming and aggression, and many stopped having babies. Dominant males took over, leaving others with little access to mates or resources. In the end, the
'Behavioral sink' is a term invented by ethologist John B. Calhoun to describe a 📈 collapse in behavior that can result from overpopulation.
The term and concept derive from a series of over-population experiments Calhoun conducted on brown 🐀 rats between 1958 and 1962. He later performed similar experiments on mice from 1968 to 1972.
In the experiments, Calhoun and his researchers created a series of "rat utopias". They created enclosed spaces where rats were given unlimited access to food and water. There were no predators. They created a perfect environment enabling unfettered 📊 population growth.
At first, their population boomed, but as it grew too large, things fell apart. The mice got stressed and started fighting over space and resources, forming strict social hierarchies. This stress led to weird behaviors like obsessive grooming and aggression, and many stopped having babies. Dominant males took over, leaving others with little access to mates or resources. In the end, the society collapsed, reproduction stopped, and all the mice died out because the overcrowding and “perfect” conditions created a stressful, chaotic breakdown called “behavioral sink.”
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Topic: Population Control. Comments: 0.