{"id":1981,"date":"2025-01-25T09:52:52","date_gmt":"2025-01-25T09:52:52","guid":{"rendered":"https:\/\/site.itshrt.com\/worldnews\/mother-chimp-and-daughter-share-a-special-sign\/"},"modified":"2025-01-25T09:52:52","modified_gmt":"2025-01-25T09:52:52","slug":"mother-chimp-and-daughter-share-a-special-sign","status":"publish","type":"post","link":"https:\/\/site.itshrt.com\/worldnews\/mother-chimp-and-daughter-share-a-special-sign\/","title":{"rendered":"Mother Chimp and Daughter Share a Special Sign"},"content":{"rendered":"<p> <script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6606220950177433\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- ItShrt World News -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-6606220950177433\"\r\n     data-ad-slot=\"1882483372\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\r\n<br \/>\n<\/p>\n<div data-testid=\"companionColumn-0\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">Parents and their children, or people who know each other well, often share some expression that is unique to them \u2014 a phrase or gesture that began by happenstance but gradually acquired a meaning that only they know.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">The same is true of Beryl, a chimpanzee living in Kibale National Park, in Uganda, and her young daughter, Lindsay. When Lindsay wants to climb on her mother\u2019s back and travel, she puts one hand over Beryl\u2019s eye \u2014 a gesture that no other chimpanzee is known to make. It\u2019s their own private sign.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">\u201cThere are so many words or gestures or things that are almost like inside jokes, that only have a meaning with just one other person,\u201d said Bas van Boekholt, a primatologist at the University of Zurich in Switzerland. \u201cThat happens very often to us humans. And now we also see that it happens in the wild, in chimps.\u201d<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Dr. van Boekholt first noticed the gesture in 2022 during his second field season at a chimpanzee community in Kibale called Ngogo. Scientists have worked with them since the early 1990s; the chimps are now so habituated that researchers accompany them for hours at a time, often observing from just a few yards away, documenting their lives in intimate detail.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-1\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">Of particular interest to Dr. van Boekholt is chimpanzee communication, especially gestures. Chimps have a rich repertoire of them, which they use in ways that might not technically qualify as language but are certainly language-like. More than 80 <a class=\"css-yywogo\" href=\"https:\/\/www.nytimes.com\/interactive\/2023\/01\/24\/science\/ape-gestures-quiz.html\" title=\"\">gestures have been translated<\/a>, including a palm-up, arm-extended request for food; a loud, long scratch that invites grooming; and a two-footed stomp that means \u201cStop that!\u201d<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-2\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">When Dr. van Boekholt saw Lindsay placing her hand over Beryl\u2019s eye, \u201cit was quite obvious that she was doing this to travel,\u201d he said. \u201cThat piqued my interest.\u201d No such gesture had previously been documented.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Dr. van Boekholt and his colleagues reviewed recordings that were made before he arrived at Kibale. The recordings showed that Lindsay started making the hand-on-eye signal when she was about 3\u00bd years old. At first, the gesture did not serve as a request to climb aboard her mother\u2019s back and depart; that started to happen at around 4\u00bd years of age.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Several other young chimps in their community were also seen making the motion, but none did so with regularity or with the same intent.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-3\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">The researchers don\u2019t know how Lindsay and Beryl\u2019s unusual exchange came to be, but they have a theory. Like any dexterous toddler, Lindsay would have moved her hands around while riding her mother\u2019s back \u2014 but Beryl is missing an eye. (Scientists don\u2019t know the back story; the eye was already missing when Beryl joined the Ngogo community in 2012.)<strong class=\"css-8qgvsz ebyp5n10\"> <\/strong>When Lindsay inevitably covered the good one, she was bound to elicit a response.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Perhaps this led Beryl to repeat the action. As the interaction occurred again and again, it gradually took on meaning. What started as a way of messing with mom while riding became a symbol for the ride.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">In <a class=\"css-yywogo\" href=\"https:\/\/link.springer.com\/article\/10.1007\/s10071-024-01904-3\" title=\"\" rel=\"noopener noreferrer\" target=\"_blank\">a study published in the journal Animal Cognition<\/a>, Dr. van Boekholt and his colleagues contextualized the chimps\u2019 story within a continuing <a class=\"css-yywogo\" href=\"https:\/\/www.nytimes.com\/2024\/09\/06\/science\/chimpanzee-gestures-language.html\" title=\"\">debate about the nature of chimpanzee gestures<\/a> and, perhaps, the roots of human language.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Some researchers have suggested that the gestures of other great apes \u2014 the primate family that includes chimps, bonobos, orangutans, gorillas and humans \u2014 are a fixed part of the species\u2019 biological inheritance. If that were so, gestures would be a relatively limited, inflexible mode of communication \u2014 not much like language or human gestures at all. And since all chimps would draw upon the same inheritance, there would be no instances of what primatologists call \u201cidiosyncratic\u201d gestures, used only by one or two individuals.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-4\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">Other scientists argue that social learning is paramount. This could entail watching and imitating the gestures of other chimps. It could also involve, through the informal back-and-forth negotiation that occurs when two individuals interact, the emergence of a shared understanding around a motion that was not originally communicative.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">That would indeed be a more flexible, language-like system \u2014 and unique, idiosyncratic gestures would be expected to arise within it. Lindsay and Beryl\u2019s hand-on-eye gesture seems to fit that bill. \u201cWe see that it\u2019s not all hard-wired,\u201d said Simone Pika, a co-author of the new study and an ethologist at Osnabr\u00fcck University in Germany. \u201cThey are creating new signals.\u201d<\/p>\n<p class=\"css-at9mc1 evys1bk0\">\u201cThere\u2019s only 1 percent of DNA difference between us and chimps, right?\u201d Dr. Pika added. \u201cSo why are we always making up these big gaps instead of saying, \u2018What are the things we are sharing?\u2019 And we are sharing gestures.\u201d<\/p>\n<p class=\"css-at9mc1 evys1bk0\">Cat Hobaiter, a primatologist at the University of St. Andrews in Scotland who was not involved in the research, cautioned that the hand-on-eye gesture might not technically qualify as idiosyncratic. Perhaps it is simply uncommon. But it was clearly \u201cshaped into a specific expression between the mother and daughter,\u201d Dr. Hobaiter said.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">To Dr. Hobaiter, the nature-versus-nurture dichotomy that has characterized the chimpanzee gesture debate is evolving into a more nuanced appreciation that both influences are important. Dr. Pika agreed.<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<div data-testid=\"companionColumn-5\">\n<div class=\"css-53u6y8\">\n<p class=\"css-at9mc1 evys1bk0\">Of course, Beryl and Lindsay\u2019s story is only one data point. As scientists gather more examples, the pair\u2019s private hand-on-eye code remains a poignant reminder of how similar chimpanzees are to their closest living relatives.<\/p>\n<p class=\"css-at9mc1 evys1bk0\">\u201cYou can\u2019t help but notice how humanlike this interaction is,\u201d Dr. van Boekholt said, adding of Lindsay: \u201cI\u2019ve been told she is still using it today, even though she is definitely getting too old to ride on her mother\u2019s back.\u201d<\/p>\n<\/div>\n<aside class=\"css-ew4tgv\" aria-label=\"companion column\"\/><\/div>\n<p><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-6606220950177433\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- ItShrt World News -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-6606220950177433\"\r\n     data-ad-slot=\"1882483372\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\r\n<br \/>\n<br \/><a href=\"https:\/\/www.nytimes.com\/2025\/01\/21\/science\/chimpanzees-language-gestures.html\">Source link <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Parents and their children, or people who know each other well, often share some expression that is unique to them<\/p>\n","protected":false},"author":1,"featured_media":1982,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[38],"tags":[222,223,221,220,224,225,188],"class_list":["post-1981","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science","tag-animal-cognition","tag-animal-cognition-journal","tag-language-and-languages","tag-monkeys-and-apes","tag-uganda","tag-your-feed-animals","tag-your-feed-science"],"yoast_head":"<!-- This site is optimized with 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