Hormonal Control of Metamorphosis in Anurans

Pre-dysplasia is characterized by sustained growth, especially on extremities, and initiates small metabolic changes caused by the sensitivity of these tissues to the developing thyroid gland and secreted thyroid hormone. There is the beginning of transformation in the development of metamorphosis. This is because the concentration of hormones involved in metamorphosis changes markedly compared to the pretransformation stage before that, during which the concentrations of these hormones differ in the lower stages of this stage.

In insects, growth and metamorphosis are controlled by hormones synthesized by the endocrine glands near the front (front) of the body. Insect brain neurosecretory cells secrete hormones that activate thymic hormone (PTTH). It secretes the second hormone, ecdysone, which induces molting, usually ecdysone. PTTH also stimulates aorata (post-spinal cord) to produce juvenile hormones that prevent the development of adult features during molting. In total metabolic insects, molting of larvae has high levels of juvenile hormones, low levels of juvenile hormones from molting to molting, and finally or imaged molting has no larval hormone . Firefly experiments show how juvenile hormones affect half-metabolic insect larva count

Metamorphosis in biology in which the morphology or structure of individuals changes markedly after hatching or delivery. Hormones are called molting hormones and juvenile hormones and are not species-specific and can clearly modulate these changes. These physical changes, as well as physical changes, including growth and differentiation, are accompanied by changes in the physiology, biochemistry, and behavior of the organism. Immature shape and larva adapt to living environment and lifestyle different from adult shape. These differences are important to ensure that larvae and adults of the same species do not compete directly with food and living space. As an example of metamorphosis, there is a stage of aquatic larvae that changes to sputum, terrestrial frog (amphibian). Starfish and other echinoderms cause metamorphosis in the range from larval symmetry to adult radial symmetry