Triops already lived 220 million years ago and are thus the oldest still living animal species

Interesting questions

What is injection molding?

To do this, use a disposable syringe from the supermarket, remove the end, fill in a small algae powder, put the end up again and push it all the way to the front, draw water from the rearing tank to the half and hold a finger to the top And then pulls to create a vacuum. So keep it and shake. Now you can fill the "algae broth" dropwise into the rearing pool. The same is also to be applied to dried mosquito larvae, so that they can be destroyed.

What does "gonochoric" mean?

In virtually all triops, autogamy (self-fertilization) or young generation (not exactly what is known by both) is carried out, in which the female fertilizes her eggs herself. In rare cases, however, a male trio slips. This fertilizes the eggs of the females with its DNA and then the female puts eggs with the genes of both animals, as is the case with most living creatures.

This process is called gonochorism.

There is a kind, the Triops granarius, in which the reproduction takes place almost entirely gonochorically.

Do Triops have natural enemies?

Triop occur in waters that exist only for a short time. That is why there are no fish or other creatures living there. Thus, the triops are not endangered by these.

However, e.g. Birds attacking them, but this is different from place to place and generally does not endanger the stock.

How could Triops survive so unchanged?

As they grow very fast and become sexually mature, enemies, of which there are not many, do not have much time to eat them. Since triops occur in the most unreal and extreme parts of the earth, giddies are fundamentally rare. Their perfect adaptation to their habitat with the daueriernn and the rapid growth makes them to survival. The dauereers are likely to survive for over 30 years under extreme conditions and suddenly come to life when puddles form. Another important point that counteracts evolution is the self-fertilization of the eggs. As a result, no genes can be mixed and changed, and the triops clone from generation to generation. Virtually no natural selection takes place.

Do the Nauplies also hatch without a drying phase?

Yes. I have often observed how suddenly a great many nuplets have hatched from their freshly laid eggs in a main pool with adult animals.

And this happened without a drying phase.
It is therefore quite possible that, under certain conditions, such as constant water level, changing water temperatures, other sunshine, etc. freshly hatched eggs slip without the pond previously drying out.

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