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Excess protein enabled dog domestication during severe Ice Age winters.

Abstract：

:Dogs (Canis familiaris) are the first animals to be domesticated by humans and the only ones domesticated by mobile hunter-gatherers. Wolves and humans were both persistent, pack hunters of large prey. They were species competing over resources in partially overlapping ecological niches and capable of killing each other. How could humans possibly have domesticated a competitive species? Here we present a new hypothesis based on food/resource partitioning between humans and incipient domesticated wolves/dogs. Humans are not fully adapted to a carnivorous diet; human consumption of meat is limited by the liver's capacity to metabolize protein. Contrary to humans, wolves can thrive on lean meat for months. We present here data showing that all the Pleistocene archeological sites with dog or incipient dog remains are from areas that were analogous to subarctic and arctic environments. Our calculations show that during harsh winters, when game is lean and devoid of fat, Late Pleistocene hunters-gatherers in Eurasia would have a surplus of animal derived protein that could have been shared with incipient dogs. Our partitioning theory explains how competition may have been ameliorated during the initial phase of dog domestication. Following this initial period, incipient dogs would have become docile, being utilized in a multitude of ways such as hunting companions, beasts of burden and guards as well as going through many similar evolutionary changes as humans.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Lahtinen M,Clinnick D,Mannermaa K,Salonen JS,Viranta S

doi

10.1038/s41598-020-78214-4

subject

Has Abstract

pub_date

2021-01-07 00:00:00

pages

7

issue

1

issn

2045-2322

pii

10.1038/s41598-020-78214-4

journal_volume

11

pub_type

杂志文章

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