The preferred and most productive manner of hunting for live food and
plant food by humans may have been learned from early primate ancestors
and may even be an inheritance from the earliest animals on Earth
according to new research
conducted by anthropologists from the United States, the United
Kingdom, and Tanzania that was published on Dec. 23, 2013, in the
journal Proceedings of the National Academy of Sciences.
The researchers studied the food acquisition methods of 44 hunter-gatherer Hadza
people of Tanzania using GPS to track 342 foraging expeditions. The
experiment included both men and women. In the Hadza people, men hunt
animals and women search for plant food.
The preferred method of searching, regardless of sex, was found to be a Lévy walk
foraging pattern. The Lévy walk pattern was defined by the number of
steps taken, the length of the steps, and the number of degrees each
individual turned to make observations of potential food sources before
continuing to forage. The pattern is not totally random like Brownian movement.
Primates have been observed practicing the same behavior. The same
search patterns have been observed in sharks and other mammals.
The researchers contend that the Lévy walk pattern of food seeking is
at minimum a learned pattern from early human ancestors and possibly
from the primate ancestors of man. The behavior could have been a
genetically evolved method of efficient food search that extends back to
the earliest known fish that evolved to emerge on land. examiner.com/
Actualización 27-12-13. Antropólogos comparan a los seres humanos con depredadores
Un equipo de antropólogos reveló que los movimientos de la tribu africana hadza durante la caza pueden ser descritos por un modelo matemático llamado 'el vuelo de Lévy': un patrón que también se encuentra en los movimientos de muchos otros animales...
jueves, 26 de diciembre de 2013
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Actualización. Antropólogos comparan a los seres humanos con depredadores
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