Metal teeth Limpetsカサガイ

mollusks

歳を取るとだんだん歯が弱くなってくるので、鉄のような頑丈な歯があれば,なんでも食べれるのにと思うことがあります

As we get older, our teeth get weaker, so sometimes we think that if we had strong teeth like steel, we could eat anything.

radulas   a flexible ribbon-like membrane

巻貝やカタツムリは歯舌(しぜつ)言う特有な歯があります。歯舌は、しなやかなリボン状の膜の上に「歯」が規則正しく並んだ姿をしていて、これを前後に動かすことにより岩などに着いた餌を削り取り食べます

Snails and shellfish have unique teeth called radulas. The radula has teeth arranged in a regular pattern on a flexible ribbon-like membrane, and by moving it back and forth, they scrape off food that has stuck to rocks and other surfaces and eat it.

they scrape off food that has stuck to rocks

生物界には金属の歯を持っている生物がいます。磯へ行くと小さなカサガイ見つけることができます。カサガイも巻貝のなかまです

 There are organisms in the living world that have metal teeth. If you go to the shore, you can find small limpets. Limpets are also a type of snail.

 There are organisms in the living world that have metal teeth.

水槽で色々な海洋生物を飼っていた時カサガイが誤って中に入ってしまいました。2∼3日後ガラス水槽の側面にカサガイの移動した跡がくっきり残っていました。カサガイの歯舌でガラスが削られていたのです

When I was keeping various marine creatures in an aquarium, a limpet accidentally got inside. Two or three days later, there was a clear trace of the limpet’s movement on the side of the glass aquarium. The glass had been scraped by the limpet’s radula.

カサガイの微小な歯は、有機成分と無機成分(金属)両方が混合された「ハイブリッド材料」でできていることが最近で分かってきました。これには、極めて硬い鉱物の針鉄鉱でできた長くて極細のナノ繊維が含まれていることもわかってきました。

残念ながら人間は金属の歯を持っていないのでこまめに歯の手入れをしなければなりません。

 It has recently been discovered that the tiny teeth of limpets are made of a “hybrid material” that is a mixture of both organic and inorganic components (metals). It has also been found to contain long, extremely thin nanofibers made from the extremely hard mineral goethite.

Unfortunately, humans don’t have metal teeth, so we have to take good care of them.


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