综合一区欧美国产,99国产麻豆免费精品,九九精品黄色录像,亚洲激情青青草,久久亚洲熟妇熟,中文字幕av在线播放,国产一区二区卡,九九久久国产精品,久久精品视频免费

Global EditionASIA 中文雙語Fran?ais
World
Home / World / Europe

First kiss not by human lovers: Study

Updated: 2025-11-20 09:56
Share
Share - WeChat
Orangutan mother looks at her baby in their enclosure at a zoo in Munich, Germany, on Oct 7, 2008. MICHAEL DALDER/REUTERS

AMSTERDAM — Kissing did not begin with star-crossed human lovers but with the primate ancestors of great apes around 20 million years ago, according to a study published on Wednesday.

Researchers from Oxford University and the Florida Institute of Technology wanted to examine when kissing began, given that, from an evolutionary standpoint, it has no obvious survival benefit and could spread disease.

Yet humans, chimpanzees, bonobos, orangutans, and gorillas all kiss, which strongly suggests the habit was inherited from a shared ancestor.

Scientists in the study combined observations of primate behavior with data on evolutionary relationships to rewind the clock and try to date the first kiss.

"Using these two key pieces of information, we employed a modeling approach that allowed us to simulate different evolutionary scenarios," said lead author Matilda Brindle of Oxford's Department of Biology. Running the model millions of times puts the first smooch between 21.5 and 16.9 million years ago.

The findings were published in the journal Evolution and Human Behavior. The scientists' unromantic definition of kissing was "non-aggressive, mouth-to-mouth contact that did not involve food transfer". This included sexual kissing as well as platonic kisses, such as those between family members or in friendly greetings. How kissing emerged remains a subject of debate, as does why it persisted.

"Some people suggest sexual kissing is a useful way of assessing mate quality or suitability," Brindle said. "Alternatively, kissing could be a type of foreplay, increasing sexual arousal and boosting the chance of fertilization."

Platonic pecks are thought to be used to navigate complex social relationships or increase bonding, she said. The study argued Neanderthals and humans also likely locked lips, given evidence that they interbred and shared an oral microbe — a sign they swapped saliva — long after the two species diverged 450,000 to 750,000 years ago.

Agencies via Xinhua

Most Viewed in 24 Hours
Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
启东市| 金阳县| 海兴县| 卫辉市| 金平| 西平县| 长沙市| 绵阳市| 南召县| 香格里拉县| 彰化市| 扬中市| 景德镇市| 唐河县| 武安市| 泉州市| 斗六市| 宜兰市| 莒南县| 奉节县| 奎屯市| 沾化县| 嵩明县| 左云县| 灯塔市| 崇礼县| 临澧县| 新源县| 民丰县| 潼关县| 应用必备| 武平县| 邵武市| 东辽县| 铁岭县| 康定县| 牡丹江市| 察隅县| 井陉县| 金湖县| 志丹县|