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Heater Organs in Marsupials

  • 20 Jun 2024
  • 1 min read

Source: Science

Recent research reveals that around 100 million years ago, placental mammals developed brown fat to survive cold and spread worldwide, and this fat evolved only in modern placental mammals.

  • Placentals are mammals excluding marsupials and monotremes, and they form one of the three main groups of living mammals, alongside Monotremata and Marsupialia.
  • Marsupials are the group of mammals commonly thought of as pouched mammals.
  • They give live birth, but they do not have long gestation times like placental mammals.
  • They are quite structurally diverse and range from small four-footed forms like the marsupial mole, Notoryctes, to the large two-legged kangaroos.
  • Marsupials, which diverged from placental mammals about 120-180 million years ago, possess a less developed form of brown fat.
  • Brown fat/Brown adipose tissue (BAT) is an exquisitely designed tissue/organ system that has evolved for the maintenance of body temperature.
  • Brown fat's ability to burn fat and sugars to produce heat has implications for treating obesity, diabetes, and other metabolic disorders.

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