دورة حياة الفراشة بالانجليزي

دورة حياة الفراشة بالانجليزي

مراحل نمو الفراشة

يرقة الفراشة بالانجليزي

مراحل حياة الفراشة

معلومات عن الفراشة بالانجليزي للاطفال

دورة حياة النبات بالانجليزي

دورة حياة الضفدع بالانجليزي

شرنقة الفراشة بالانجليزي

دورة حياة الفراشة بالرسم

 

 

Butterfly Life Cycle

 

The life of butterflies is divided into 4 stages which are radically different from each other:

 

The egg marks the beginning of the life of the butterfly, which hatches after 5 to 10 days.

The caterpillar is the second stage. It grows rapidly and moults 4 to 6 times during its growth.

During the third stage, it transforms into a chrysalis and during 2 to 4 weeks, it will operate a calm period of successive transformations to form the structure of the adult body of the butterfly.

Then 10 to 15 days later, the adult butterfly finally emerges from the chrysalis.

Soon after, the males and females will mate, lay their eggs nearby, and the cycle begins again.

 

The butterfly, a master of metamorphosis

 

Many insects undergo their metamorphosis bit by bit, but Lepidoptera or butterflies, after having existed for a considerable period without any significant visible change in their structure, pass through a rapid transition from one state to another.

 

Thus, a caterpillar which has not generally changed for several weeks turns into a chrysalis within a few days, and again, after a period of rest which may extend over all the months. the colder, it becomes a perfect day butterfly or moth within twenty minutes of its emergence from its cocoon.

 

This suddenness is more apparent than real, as can be easily proven by observing what goes on inside the butterfly's body at different stages of growth: We are sometimes deceived by the speed of the changes - which are taking place. makes simple molts or changes in the shape of the skin - while the gradual changes taking place inside the insect are not observed as easily.

 

A short life cycle for the butterfly

 

We have already said that the life of the day butterfly or moth is short. A few days after the pupa emerges, the female lays her eggs on the leaves or stems of a plant that will feed the larvae. Her job is now done, and the few days she has left is spent frolicking among the flowers and sucking on the sweet juices within.

 

But males and females, decked out in bright colors and brimming with life after the pupa emerges, will soon show symptoms of the rapidly approaching end of life. Their colors begin to fade, and the scales of the wings gradually disappear as they rub against the petals of hundreds of visited flowers and the joyful dances with dozens and dozens of other butterflies.

 

Finally, one fine afternoon, while the sun is still high in the sky, a butterfly, more tired than usual, with the heavy and laborious flight, seeks a resting place for the next night. Here, on a waving rod, it is quickly rocked by a gentle breeze.

 

The next morning, a few hours before noon, the blazing sun calls him to start his usual antics. But his body now seems too heavy to be supported by the weak, ragged wings, and, after a weak attempt or two to launch himself into the air, he settles into his final resting place.

 

The next morning, we can see the dead butterfly still hanging with its claws on a stem from which it is finally blown off.

 

The history of moths is very similar to the above, except that they are usually active as night approaches.

 

The moth's task ends with the laying of eggs, and the parents are dead before the young larvae have emerged from the cocoon surrounding them. It is fascinating to see how females generally lay their eggs on the very plants that provide necessary food for their offspring. They are careful about the growing conditions of their offspring and have the ability to distinguish useful plants from all others.

 

The life of the caterpillar

 

But now we need to move on to a brief review of the other stages of the butterfly's existence. After a while, ranging from a few days to several months, the young caterpillars or larvae appear. They soon start to feed. The duration of their existence in this state varies from a few weeks to several months, and in some cases even years.

 

During this time, their growth is usually very rapid, and they undergo a series of molts or skin changes, which we will have more to say about on another page of this site.

 

The nymph or chrysalis

 

In adulthood, they prepare for a seemingly quiet phase which we call nymph or chrysalis, in which they again spend a very variable period extending over a few days, weeks or months.