Metamorphosis Is the Process of the Development of Living Things, Know the Phase and Types

Some insects, amphibians, molluscs, crustaceans, echinoderms and sheaths face metamorphosis, usually or but not always accompanied by changes in habitat or behavior. There are two kinds of metamorphosis in insects, namely hemimetabolism and holometabolism. Check out the explanation regarding the types of metamorphosis as follows:

1. Complete Metamorphosis or Holometabola

Complete metamorphosis is Holometabolism. In holometabolism, these larvae are very different from the adults. Insects undergo holometabolism only in the larval stage, and then enter a period of inactivity called the pupa, which concludes that they are adults. Therefore, complete metamorphosis refers to metamorphosis that begins with egg-pupa – imago. The perfect examples of aberration are frogs, mosquitoes and butterflies. There are also stages of development and growth that occur in complete metaorphosis, including:

a. Egg Phase

Female animals will lay eggs in a suitable place for the growth and development needs of their prospective young. For example, a butterfly lays its eggs on the surface of a leaf because the larvae or young animals are plant eaters. During this egg stage, the fertilized embryo of the fertilized egg continues to undergo separation and form organs for a certain period of time, depending on the type of species. These mosquito eggs are light and dense like a bamboo raft. Female mosquitoes also lay eggs in calm water. This is because the mosquito larvae spend their entire life in the water. After the specified time, the eggs will hatch into larvae or young animals.

b. Larva stage

At this stage, the larvae or young animals are also very active in eating. The female parent lays eggs in a suitable place for their food. Caterpillars, butterfly larvae, can eat leaves because that is their place or perch. Animal larvae that already have an exoskeleton or exoskeleton, such as in insects, are about to undergo molting or exdysis or molting. This is also due to the fact that his body has swollen, so a new exoskeleton is needed to match his swollen size. This skin change can occur repeatedly, at a certain time the larva must finish eating and enter the next stage, which is to become a pupa. These changes can be controlled by hormones in the larvae.

c. Pupa phase

Pupa or cocoon is a transitional phase. The cocoon body is protected by a hard skeleton or cocoon. In this phase, most insects are located in an inactive or eating state. Behind the cocoon, the pupal body is very active in carrying out the metabolism of the making of the organs and forms of its adult animal. The need for energy is obtained from food reserves in the larva’s body or in the larval phase, it is very active to eat, and part of the food will be put in the pupa phase. The pupal phase takes a wide variety of times.

d. Imago phase

Until the appointed time, the pupa comes out of its shell to become an adult or imago with a completely different shape. In this phase, imago has a different feeding method and habitat from its larvae. The imago stage is the reproductive stage. Adult or male and female animals will mate and form hundreds of eggs, and hope to repeat this cycle.

2. Incomplete Metamorphosis or Hemimetobole

Incomplete metamorphosis is hemimetabolism. The immature stage of a metamorphic species is usually called the larva. However, in the metamorphosis of most insect species, only the initial stages are called larvae, sometimes under different names. In hemimetabolism, larval growth will occur at the umpteenth stage of development and molting or molting, which is called adulthood. Therefore, this incomplete metamorphosis is a metamorphosis that has gone through two stages, namely from egg to nymph, then to an adult animal. Usually this kind of metamorphosis also occurs in insects, such as dragonflies, grasshoppers. The stages in hemimetabola are:

a. Eggs

As is usually the case with an insect, the eggs are laid in a place suitable and comfortable for the growth of the embryo. The embryo is protected by the egg structure with a zar kiitin shell. Until the specified time, the eggs will immediately hatch into nymphs.

b. Nimfa

In contrast to the holometabolous group, the hemimetabolous directly has a part of the actual animal form, namely the nymph, which is smaller in size. Nymphs want to face development and growth for the maturity of their reproductive organs. The nymph also wants to face extinction in order to change the outer frame of her body due to developments that make her body dimensions even bigger.

c. Imago

Imago also has reproductive maturity and is ready to carry out mating. This cycle will repeat itself.

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