A comparative study of three Anuran species of Rajasthan
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Amphibians are intermediate in some ways between the fully aquatic fishes and the terrestrial amniotes. However, they are not simply transition their morphology, life history, ecology and behavior. In the successful attainment independence from water and colonization of land amphibians have under gone a remarkable adaptive radiation and the living groups exhibit a greater diversity of modes of life history than any other group of vertebrates. Amphibian especially those that have left the water, generally inhabit environments that are hostile to their basic physiology because they are ectotherm...
Amphibians are intermediate in some ways between the fully aquatic fishes and the terrestrial amniotes. However, they are not simply transition their morphology, life history, ecology and behavior. In the successful attainment independence from water and colonization of land amphibians have under gone a remarkable adaptive radiation and the living groups exhibit a greater diversity of modes of life history than any other group of vertebrates. Amphibian especially those that have left the water, generally inhabit environments that are hostile to their basic physiology because they are ectotherms (Poikilothermal) and have a permeable body covering they are more susceptible to the vicissitudes of the environment than any other tetrapods. Indian amphibians occur in varied ecological conditions from the planes to mountains, low to heavy rainfall area, from river beds to ponds and even in deserts. Some species prefer to stay permanently in water, a few live in bushes near water sourceswhile others live under boulders rocks stones or under decaying logs. Several are arboreal or prefer crevices in rocks and tress among foliage and leaf litter or in losses soil.
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