カニビルとは?蟹の甲羅についた黒いぶつぶつの正体と取り方

What is Kanibiru? What are the black bumps on crab shells and how to remove them?

Winter is the season to enjoy delicious crab!

Crabs are often seen on TV, in magazines, and in supermarkets, but many people may be concerned about the black bumps on their shells.

This time we will introduce you to the true nature of these black bumps and how to get rid of them !


The black bumps on the crab's shell are actually crab eggs.

Matsuba crab with crab bill

The black bumps on the crab's shell are actually crabbill eggs .

As you can imagine from the name crabbill, it is a type of leech found in mountains and rivers, and it is a creature that lives by attaching itself to fish and sucking their body fluids.

They simply lay eggs in the crab's shell and are not particularly harmful to the crab.

The ocean floor where crabbills live is covered in mud and is soft and unsuitable for spawning, so they are said to lay their eggs on crab shells instead of rocky areas.

Crab eggs are often attached to snow crabs and king crabs , but they are not laid on hairy crabs.


The reason why crabs with lots of black bumps are said to be delicious

It has long been said that ``the more black spots a crab has, the tastier it is.'' The reason for this is that crabbills are said to lay eggs in crabs with hard shells.

Crabs use nutrients when they molt, so young crabs that have just molted their shells often have soft shells and lean flesh.

If a crabbiru has a lot of eggs on it, we can assume that it has been a long time since it shed its skin, so there is a high possibility that it is a good crab with plenty of meat .

However, crabbills may lay eggs on crabs that have just shed their skin, so this should only be used as a guideline.


Is there a risk of accidentally eating them together?

Hatena

The basic premise is that crabbills are not edible, but they are not parasitic to humans, so don't worry if you do eat them, there will be no harm .

Even when crabbills become adults, they do not parasitize crabs and suck their body fluids, and they do not enter the shell, so they are unlikely to be eaten.

Crabbiru will die if frozen or boiled, so there is no problem in putting it in the pot with its shell.


How to remove crab eggs from crab shells

Scrubber

Crab eggs are stuck to the crab's shell, so they are difficult to remove.

Even though it's not harmful, I think there are many people who feel that it's a little hard to put it in the pot as it is .

There is no special way to remove it; the only way to remove it is to scrub it off with a scrubber or brush.

The true nature of the black bumps on crab shells | Summary

  • The black bumps are actually crab eggs.
  • Crabs with lots of crab meat are delicious.
  • There is no harm in case you eat it.
  • To remove, scrub thoroughly with a scrubber or brush
  • If you are interested, buy crabs for gifts or year-end gifts.

The black bumps on the crab's shell are actually the eggs of a type of leech called crabbill .

They do not parasitize crabs and use their shells as a place to lay their eggs.

Crabs with lots of crabbills attached are most likely crabs that have been molted for some time and are well-stuffed .

At Ichii Shoten, we also carry crabs in beautiful condition with the crab shells removed for gifts and year-end gifts, so if you are concerned about crab shells, please purchase crabs for gifts or year-end gifts.

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