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Many frogs are able to absorb water and oxygen directly through the skin, especially around the pelvic area, but the permeability of a frog's skin can also result in water loss. Glands located all over the body exude mucus which helps keep the skin moist and reduces evaporation.
Most aquatic and semi-aquatic amphibians have a membranous skin which allows them to absorb water directly through it. Some semi-aquatic animals also have similarly permeable bladder membrane. [80] As a result, they tend to have high rates of urine production to offset this high water intake, and have urine which is low in dissolved salts.
Cutaneous respiration in frogs and other amphibians may be the primary respiratory mode during colder temperatures. [3] Some amphibians utilizing cutaneous respiration have extensive folds of skin to increase the rate of respiration. Examples include the hellbender salamander and the Lake Titicaca water frog. [2]
Research by Cartledge et al. (2006) [7] suggests that the species' water balance is more closely linked to the hygric properties of the surrounding soil rather than the formation of a cocoon. The water potential of the soil plays a crucial role in the frog's ability to absorb water and reduce loss of body water through its skin. This adaptation ...
They are able to survive in areas with very little water by burrowing underground and waiting out dry periods, and they are also able to absorb water through their skin. The desert rain frog's habitat is characterized by xerophytic vegetation, which is adapted to living in dry environments, and in the spring, the area blooms with a variety of ...
The toad is able to absorb water from the surrounding soil; even as the soil becomes increasingly dry in spring and early summer months, increased concentrations of urea in the toad's body allow it to continue to suck water out of the soil through osmosis. When the summer rains arrive the Great Basin spadefoot emerges from its burrow. [4]
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Osmoregulation is the active regulation of the osmotic pressure of an organism's body fluids, detected by osmoreceptors, to maintain the homeostasis of the organism's water content; that is, it maintains the fluid balance and the concentration of electrolytes (salts in solution which in this case is represented by body fluid) to keep the body fluids from becoming too diluted or concentrated.