{"id":28776,"date":"2023-05-25T11:57:25","date_gmt":"2023-05-25T09:57:25","guid":{"rendered":"https:\/\/www.discoverwildlife.com\/?p=77329"},"modified":"2023-05-25T12:35:43","modified_gmt":"2023-05-25T10:35:43","slug":"fish-that-can-walk-on-land-evolved-the-ability-to-blink-like-we-do","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/bbcwildlife\/rss_feed\/fish-that-can-walk-on-land-evolved-the-ability-to-blink-like-we-do\/","title":{"rendered":"Fish that can walk on land evolved the ability to blink like we do"},"content":{"rendered":"<p class=\"rssexcerpt\"> Scientists have discovered that mudskippers \u2013 fish that breathe air \u2013 probably blink for the same reasons as humans <\/p><p class=\"rssauthor\">By Stuart Blackman\n                \t\t<\/p><p class=\"rssbyline\">Published: Thursday, 25 May 2023 at 12:00 am<\/p><hr class=\"no-tts wp-block-separator\"\/><?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body> <p>Most fish would perform pretty well in a staring competition. But not, perhaps, the <a href=\"\/\/www.discoverwildlife.com\/animal-facts\/fish\/can-fish-walk\/&quot;\" target=\"&quot;_blank&quot;\" rel=\"&quot;noopener&quot; noopener noreferrer\">mudskipper<\/a>. Because unlike most fish, <a href=\"\/\/www.discoverwildlife.com\/animal-facts\/fish\/how-long-can-a-fish-live-out-of-water\/&quot;\" target=\"&quot;_blank&quot;\" rel=\"&quot;noopener&quot; noopener noreferrer\">mudskippers<\/a> can blink. And new research into how they do it provides clues to its origin in land animals such as ourselves.<\/p>\n<p>Soft tissues such as eyelids and muscles are not preserved in the fossil record. Which is why biologists have turned to mudskippers for clues to how early terrestrial vertebrates evolved the ability to keep their eyeballs moist on land.<\/p>\n<p><em>Please note external videos may contain ads:\u00a0<\/em><\/p>\n<iframe title=\"&quot;Mudskippers:\" the=\"\" fish=\"\" that=\"\" walk=\"\" on=\"\" land=\"\" life=\"\" bbc=\"\" earth=\"\" width=\"&quot;200&quot;\" height=\"&quot;113&quot;\" src=\"&quot;https:\/\/www.youtube.com\/embed\/CAQuoH_fOWM?feature=oembed&quot;\" frameborder=\"&quot;0&quot;\" allow=\"&quot;accelerometer;\" autoplay=\"\" clipboard-write=\"\" encrypted-media=\"\" gyroscope=\"\" picture-in-picture=\"\" web-share=\"\" allowfullscreen=\"\"\/>\n<p>Research published in the journal <a href=\"text=Mudskippers%20Blink%20by%20Lowering%20the,and%20Movies%20S1%E2%80%93S3).&quot;\" target=\"&quot;_blank&quot;\" rel=\"&quot;noopener&quot; noopener noreferrer\"><em>PNAS<\/em><\/a> suggests that these amphibious gobies have come up with a fairly straightforward solution: they retract their eyeballs into their skull using already-existing musculature so that the surrounding tissue acts as ready-made eyelids.<\/p>\n<p>\u201cIt is sufficient to achieve a bunch of functions that are associated with life on land,\u201d says team member Thomas Stewart of <a href=\"\/\/www.psu.edu\/&quot;\" target=\"&quot;_blank&quot;\" rel=\"&quot;noopener&quot; noopener noreferrer\">Pennsylvania State University<\/a>.<\/p>\n<section class=\"&quot;highlight\"> <div class=\"&quot;highlight__content\" editor-content=\"\"> <p><strong>More related content:\u00a0<\/strong><\/p>\n<p><a href=\"\/\/www.discoverwildlife.com\/animal-facts\/fish\/can-fish-walk\/&quot;\" target=\"&quot;_blank&quot;\" rel=\"&quot;noopener&quot; noopener noreferrer\">Can fish walk?<\/a><\/p>\n<p><a href=\"\/\/www.discoverwildlife.com\/animal-facts\/fish\/how-long-can-a-fish-live-out-of-water\/&quot;\" target=\"&quot;_blank&quot;\" rel=\"&quot;noopener&quot; noopener noreferrer\">How long can a fish live out of water?<\/a><\/p>\n<p><a href=\"\/\/www.discoverwildlife.com\/news\/why-didnt-more-of-our-fishy-ancestors-come-ashore\/&quot;\" target=\"&quot;_blank&quot;\" rel=\"&quot;noopener&quot; noopener noreferrer\">Why didn\u2019t more of our fishy ancestors come ashore?<\/a><\/p>\n<p> <\/p><\/div> <\/section> <p>It may be no coincidence that many living vertebrates also have retractable eyeballs, says Stewart. \u201c<a href=\"\/\/www.discoverwildlife.com\/animal-facts\/amphibians\/understand-frog-breeding-behaviour\/&quot;\" target=\"&quot;_blank&quot;\" rel=\"&quot;noopener&quot; noopener noreferrer\">Frogs<\/a> are a famous example, but <a href=\"\/\/www.discoverwildlife.com\/animal-facts\/mammals\/are-rats-emotional-as-well-as-clever\/&quot;\" target=\"&quot;_blank&quot;\" rel=\"&quot;noopener&quot; noopener noreferrer\">rats<\/a> are also kind of bug-eyed and if you watch them blinking you\u2019ll see them retract.\u201d<\/p>\n<p>On the other hand, some amphibious fish, such as the European eel and lungfish are incapable of blinking. \u201cMaintaining a fluid film on the eye is really important,\u201d Stewart notes. \u201cA lungfish might live out of water in its cocoon for weeks. One wonders how they are able to keep their eyes healthy. It\u2019s a curious one.\u201d<\/p>\n<p><em>Main image: Mudskippers are amphibious fish \u00a9\u00a0Afriadi Hikmal\/Getty\u00a0<\/em><\/p> <\/body><\/html>\n<hr class=\"no-tts wp-block-separator\"\/>","protected":false},"excerpt":{"rendered":"<p> Scientists have discovered that mudskippers \u2013 fish that breathe air \u2013 probably blink for the same reasons as humans <\/p>\n","protected":false},"author":24,"featured_media":28777,"template":"","categories":[1],"acf":{"readingTimeMinutes":"2"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/05\/fish-that-can-walk-on-land-evolved-the-ability-to-blink-like-we-do-scaled.jpg",2560,1707,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/05\/fish-that-can-walk-on-land-evolved-the-ability-to-blink-like-we-do-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/05\/fish-that-can-walk-on-land-evolved-the-ability-to-blink-like-we-do-300x200.jpg",300,200,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/05\/fish-that-can-walk-on-land-evolved-the-ability-to-blink-like-we-do-768x512.jpg",768,512,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/05\/fish-that-can-walk-on-land-evolved-the-ability-to-blink-like-we-do-1024x683.jpg",800,534,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/05\/fish-that-can-walk-on-land-evolved-the-ability-to-blink-like-we-do-1536x1024.jpg",1536,1024,true],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2023\/05\/fish-that-can-walk-on-land-evolved-the-ability-to-blink-like-we-do-2048x1365.jpg",2048,1365,true]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcwildlife\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"Scientists have discovered that mudskippers \u2013 fish that breathe air \u2013 probably blink for the same reasons as humans","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/rss_feed\/28776"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/rss_feed"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/types\/rss_feed"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/users\/24"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/media\/28777"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/media?parent=28776"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/categories?post=28776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}