{"id":592673,"date":"2026-04-08T04:17:37","date_gmt":"2026-04-08T04:17:37","guid":{"rendered":"https:\/\/www.newsbeep.com\/au\/592673\/"},"modified":"2026-04-08T04:17:37","modified_gmt":"2026-04-08T04:17:37","slug":"new-miniature-marsupial-frog-carries-a-secret-in-a-hidden-pouch","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/au\/592673\/","title":{"rendered":"New miniature &#8216;marsupial&#8217; frog carries a secret in a hidden pouch"},"content":{"rendered":"<p>While surveying the cloud forests of Peru, a group of herpetologists recently stumbled upon a new species of amphibian \u2014 a rare \u201cmarsupial\u201d frog that carries its eggs in a pouch on its back.\u00a0<\/p>\n<p>In a study published in the New Zealand scientific journal <a href=\"https:\/\/www.mapress.com\/zt\/article\/view\/zootaxa.5777.3.2\" target=\"_blank\" rel=\"nofollow noopener\">Zootaxa<\/a>, the researchers said the new frog \u2014 Gastrotheca mittaliiti \u2014 measured in at just 2.7 to 3.3 centimeters (1 to 1.3 inches) and was discovered in a mountainous Amazonas region bordering Ecuador.<\/p>\n<p>\u201cOur results highlight the Huancabamba region as the hotspot of Gastrotheca species richness,\u201d the researchers said.\u00a0<\/p>\n<p>The new species was distinguishable from other frogs in its genus by several physical traits, such as its small size, rough and bumpy skin, raised ridges along its back, and \u201cnarrow discs on fingers and toes.\u201d<\/p>\n<p>Among over 7,700 known species of frogs, marsupial frogs are some of the most fascinating.\u00a0<\/p>\n<p>The females have a special pouch on their back \u2014 a rare trait among amphibians \u2014 and after the eggs are fertilized, the male helps place the eggs into this pouch using his toes.<\/p>\n<p>The eggs then stay inside the pouch while they develop. Inside, they stay connected to the mother\u2019s body, which gives them oxygen to help them grow.<\/p>\n<p><img decoding=\"async\" alt=\"A Gastrotheca guentheri frog with large bumps on its back from the eggs its carrying\" src=\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2026\/04\/69d3f0559a39d85288008231_new-species-frog-pouch-marsupial-eggs.jpg\" loading=\"lazy\"\/>A Gastrotheca guentheri. All frogs from the Gastrotheca genus possess a pouch on their back, which they use to carry and protect fertilized eggs. Image via Jos\u00e9 Ulisses Ara\u00fajo de Souza (CC-BY-NC)<\/p>\n<p>In 2016, ecologists Robin W. Warne and Alessandro Catenazzi made a groundbreaking discovery while studying marsupial frogs.\u00a0<\/p>\n<p>By using a special method to track nutrients \u2014 like fats and proteins \u2014 from the mother to the embryos, they found that nutrients from the mother actually move into the developing babies.<\/p>\n<p>Until then, it was thought that the frog pouches were built largely for protection.\u00a0<\/p>\n<p>However, Warne and Catenazzi proved that marsupial frog mothers don\u2019t just carry their babies; they actually feed them nutrients while they grow inside the pouch, similar to how some mammals support their young.<\/p>\n<p>\u201cThis finding revealed a suspected but untested trait in the evolution of parental care in marsupial frogs, in contrast to previous work on Gastrotheca species that release tadpoles, and suggests greater complexity in reproductive and provisioning modes than previously thought,\u201d Catenazzi and Warne observed in their study, which was published in the <a href=\"https:\/\/www.researchgate.net\/publication\/309423452_Pouch_brooding_marsupial_frogs_transfer_nutrients_to_developing_embryos\" target=\"_blank\" rel=\"nofollow noopener\">scientific journal Biology Letters<\/a>.<\/p>\n<p>To date, scientists have found 74 frogs in the genus Gastrotheca.<\/p>\n<p><img decoding=\"async\" alt=\"Four photos showing the stages of development of a frog egg on the back of a brooding marsupial frog mother with dappled brown and black skin\" src=\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2026\/04\/69d3f0878cfbbfe4a047aa1a_new-species-marsupial-frog-pouch.jpg\" loading=\"lazy\"\/>(a) Marsupial frogs (Gastrotheca excubitor) brood their direct-developing larvae within a fully enclosed pouch, from which (b) froglets emerge. (c) Embryos are surrounded by a highly vascularized membrane within the brood pouch, which along with (d) external gills enables gas exchange and nutrient transfer throughout development. Alessandro Catenazzi<\/p>\n<p>This includes the Guenther&#8217;s marsupial frog (Gastrotheca guentheri), which is the only known frog with true teeth in its lower jaw, and the horned marsupial frog (Gastrotheca cornuta), which makes a mating call that sounds like a champagne cork being popped.\u00a0<\/p>\n<p>Manuel Oliva, director of Toribio Rodriguez de Mendoza National University\u2019s Ceja de Selva Research Institute for Sustainable Development, told AFP that with the discovery of the Gastrotheca mittaliiti, herpetologists have been able to paint a better picture of the frog genus \u2014 and how to protect them.\u00a0<\/p>\n<p>\u201cThis is further evidence of the enormous natural wealth we possess &#8230; If we continue our research, there are many species still waiting to be discovered,\u201d Oliva <a href=\"https:\/\/phys.org\/news\/2026-04-miniature-marsupial-frog-peru-eggs.html\" rel=\"nofollow noopener\" target=\"_blank\">told AFP<\/a>.<\/p>\n<p>\u200d<\/p>\n<p>You may also like: <a href=\"https:\/\/www.goodgoodgood.co\/articles\/new-species-toads-toadlet-tadpole\" rel=\"nofollow noopener\" target=\"_blank\">Scientists discover three new species of toad that give birth to tiny &#8216;toadlets,&#8217; skipping the tadpole phase altogether<\/a><\/p>\n<p>\u200d<\/p>\n","protected":false},"excerpt":{"rendered":"While surveying the cloud forests of Peru, a group of herpetologists recently stumbled upon a new species of&hellip;\n","protected":false},"author":2,"featured_media":592674,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[64,63,128,338],"class_list":{"0":"post-592673","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-wildlife","8":"tag-au","9":"tag-australia","10":"tag-science","11":"tag-wildlife"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts\/592673","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/comments?post=592673"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts\/592673\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/media\/592674"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/media?parent=592673"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/categories?post=592673"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/tags?post=592673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}