What's the point of touching the water?

Dragonflies are the general name of dragonflies and dragonflies. Adults generally fly in ponds or rivers to prey on flying insects. Larvae (juveniles) develop in the water and breathe through rectal trachea gills in the water. They usually molt more than 11 times. It takes two or more years to climb out of the water along the aquatic plants, and then finally molt into adults. Let's take a look at what dragonflies are for.

What is the purpose of scratching the surface?

The female dragonfly is laying eggs. Dragonflies usually lay their eggs on aquatic plants in small rivers and ponds. The larvae hatched on aquatic plants after ovulation are called "water flies". Water flies have to crawl in the water for a long time, at least one year, or seven or eight years before they can become adults of dragonflies. After feathering into an adult, the short and fat belly becomes more and more slender, and the previously folded wings spread out one by one, and finally become a dragonfly like a small airplane. It can be seen that "dragonfly scratching the surface" is a natural part of dragonfly life-laying eggs to reproduce.

What's the name of the dragonfly larva?

The larva of dragonfly is called Shuihu. The eggs of dragonflies have a special shape when they are just hatched. their six feet and head are all huddled with their bodies, just like little shrimps without feet. This stage is called "pre-infantile stage". The pre-infantile period is very short, ranging from three to five seconds to as many as two or three minutes. The back of the former nymph will crack and the first instar will shed its skin. Dragonfly larvae have different instar periods according to different species. in general, the younger the dragonfly larvae are, the lighter the body color is. The time required for the whole larva varies according to different species and seasons, ranging from one month to three or four years.

What kind of food do dragonfly larvae eat?

In order to avoid natural enemies and prey, dragonfly larvae usually live in streams and mainly feed on mayfly larvae, stone fly larvae, Chironomus and other Diptera larvae, as well as some small fish. the species inhabiting still waters mainly feed on tadpoles, small shrimps, small fish, water fleas, smaller dragonfly larvae, backstroke bugs, wigglers, Chironomus and other Diptera larvae. The natural enemies of dragonfly larvae are birds, large omnivorous fish, Hong Niang Hua, negative bugs, dragon lice and so on.