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A dragonfly in its final moult, undergoing metamorphosis, it begins transforming from its nymph form to an adult. Metamorphosis is a biological process by which an animal physically develops including birth transformation or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell growth and differentiation. [1]
At metamorphosis, rapid changes in the body take place as the lifestyle of the frog changes completely. The spiral-shaped mouth with horny tooth ridges is reabsorbed together with the spiral gut. The animal develops a large jaw, and its gills disappear along with its gill sac.
Holometabolism, also called complete metamorphosis, is a form of insect development which includes four life stages: egg, larva, pupa, and imago (or adult). Holometabolism is a synapomorphic trait of all insects in the clade Holometabola. Immature stages of holometabolous insects are very different from the mature stage.
Frogs produce a wide range of vocalisations, particularly in their breeding season, and exhibit many different kinds of complex behaviors to attract mates, to fend off predators and to generally survive. Frogs are valued as food by humans and also have many cultural roles in literature, symbolism and religion.
Tadpoles average slightly over 1 in (3 cm) long and require 80 to 180 days to complete metamorphosis in the field. [6] The Mississippi gopher frog possesses several defense mechanisms in its immune system that are unique to Rana sevosa. The frog's innate immune system is adept at recognizing outside prokaryotic pathogens.
Gosner stage is a generalized system of describing stages of embryonal and larval development in anurans (frogs and toads). The Gosner system includes 46 numbered stages, from fertilized embryo (stage 1) to the completion of metamorphosis (stage 46). It was introduced by Kenneth Gosner in 1960. [2]
After metamorphosis is complete, the frog is around the same length. The juveniles initially grow rapidly, reaching 45 mm within two months, 50–60 mm within half a year, before growth slows. [41] months, and increase in length more slowly after that. [41] Once sexual maturity is reached, the frogs' physical growth is very slow. [41]
Tadpoles undergo metamorphosis into yellow juveniles and this stage is completed around 45 days after the eggs were laid. [4] Ambushing potential prey, adult tomato frogs feed on small invertebrates, [6] such as beetles, mosquitoes, and flies. When threatened, these frogs can inflate themselves, giving the appearance of greater size. [8]
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