Taking a bite out of a fellow worker helps wasps recruit new foragers
If you think you've got a bad boss, one who loves to chew people out, or if you work with backstabbing co-workers, be thankful you are not a wasp. If you were, chances are your nestmates might bite you to communicate that it is time to leave the nest and forage for the colony, according to research by a University of Washington animal behaviorist. Biting is a way that workers in a colony...Plants tell caterpillars when it's safe to forage
The world is filled with cues that could influence the daily feeding patterns of an organism. Many plants, for example, respond to foraging damage by releasing specialized chemical signals - volatile organic compounds that evaporate in the air - that attract the forager's natural enemies. This strategy is obviously no use against a cow, but proves effective when the offender is a caterpillar and...Man's Transition from Foragers to Agriculturalist Led to Increase in Birth Rates
A study was conducted by Jean-Pierre Bocquet-Appel (Ecole des Hautes Etudes en Sciences Sociales, France) said that there was an increase in the birth rate when man discovered agriculture.// This is proved by studying the Skeletons from the Neolithic period. Anthropologists studied 60 prehistoric American cemeteries to prove the fact that agriculture played a very important role in wo...