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Started from the bottom, now I’m here: How a sea worm’s butt swims away to start life of its own | Science & Tech News<\/p>\n
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When living your best life just isn’t enough, why not live two?<\/p>\n
That’s the ethos of the Japanese green syllid worm, which scientists have found is able to detach its backend to embark on its own underwater adventures.<\/p>\n
In a process called stolonisation (which sounds like a Christmas diet), the bottom end of these worms develop their own eyes, antennae and swimming bristles before breaking up with the top half and swimming away.<\/p>\n
This bottom end, called the stolon, is full of eggs or sperms and heads off looking for a mate – while the rest of the worm stays behind and avoids the potentially dangerous journey.<\/p>\n
For years, scientists have been baffled as to exactly how these stolons form before becoming independent.<\/p>\n
Now a team at the University of Tokyo have discovered that they do so in sequence, starting with the maturation of gonads and then the formation of its own head.<\/p>\n
Eyes, antennae, and other sensory organs follow, then come the swimming bristles, before the remarkable process rounds out with new nerves and a “brain”.<\/p>\n
Read more science and tech news: It lacks a unique digestive tract, and much of its body segments are repeated from the worm’s front.<\/p>\n But with everything it needs in place, these reproductive stolons can safely detach and live their own life.<\/p>\n Lead researcher Professor Toru Miura said it was a remarkable example of how animals adapt to survive.<\/p>\n “This shows how normal developmental processes are modified to fit the life history of animals with unique reproductive styles,” he added.<\/p>\n<\/p><\/div>\n \u0627\u0644\u0645\u0635\u062f\u0631<\/a>
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