Shapes of Eggs
Shapes of eggs differ depending on the organisms.
卵の形
For example, many kinds of fish lay spherical eggs.
生物によって卵の形は異なります。
On the other hand, reptiles and birds lay elliptical eggs.
例えば、魚類の多くは円形の卵を産みます。
It is said that one of the reasons is to make easier to lay eggs that are large compared to their bodies.
一方で、爬虫類や鳥類は楕円形の卵を産みます。
In addition, birds’ eggs have characteristic elliptical shapes, one side is thin, and the other hand is thick.
この理由の一つは、体に比べて大きな卵を、体外に出しやすくするためだと言われています。
It is thought that the reason is to prevent eggs from rolling farther and farther away from their nests.
そして、鳥の卵は特に、楕円の片側を細く、片側を太くしたような形をしています。
In fact, since owls that make their nests in holes of trees don’t worry about rolling eggs, the shapes close to a sphere.
この理由は、卵が遠くへ転がらないようにするためだと考えられています。
