Journal ArticleDOI
Cocoon Structure and Function in the Burrowing Hylid Frog, Pternohyla fodiens
Rodolfo Ruibal,Stanley Hillman +1 more
TLDR
The cocoon of Pternohyla represents the first known case of cocoon formation in a hylid frog.Abstract:
The epidermal cocoon of Pternohyla consists of multiple sheddings of the stratum corneum interspersed with mucus filled subcorneal spaces. The rate of water loss through the cocoon is very low (0.6 mg g-1 hr-1) under the experimental conditions of flowing dry air. The cocoon of Pternohyla represents the first known case of cocoon formation in a hylid frog.read more
Citations
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Water relations of tetrapod integument
TL;DR: The vertebrate integument represents an evolutionary compromise between the needs for mechanical protection and those of sensing the environment and regulating the exchange of materials and energy and has didactic significance for understanding vertebrate evolution as well as practical application to clinical dermatology.
Journal ArticleDOI
Osmoregulation and excretion
Erik Larsen,Lewis E. Deaton,Horst Onken,Michael P. O'Donnell,Martin Grosell,William H. Dantzler,Dirk Weihrauch +6 more
TL;DR: How knowledge in these areas of comparative physiology has expanded considerably during the last two decades is demonstrated, bridging seminal classical works with studies based on new approaches at all levels of anatomical and functional organization.
Journal ArticleDOI
Cutaneous adaptations to water balance in amphibians
R.C. Toledo,Carlos Jared +1 more
TL;DR: It has been observed that the hydration capacity in some anurans is related to the cutaneous vascularization in the ventral pelvic region, and that, in general, species of terrestrial habit have a greater degree of vascularization than those of aquatic habit.
Journal ArticleDOI
200 years of amphibian water economy: from Robert Townson to the present.
TL;DR: In the 1970s, it was found that 'waterproofing' of the highly permeable skins by means of skin secretions had evolved independently in several families of tropical arboreal frogs, and that a number of amphibians that aestivate whilst burrowed in dry soil could reduce evaporation by forming cocoons from shed strata cornea.
Journal ArticleDOI
Cocoon formation and structure in the aestivating Australian desert frogs, Neobatrachus and Cyclorana
TL;DR: The cocoon consists of an accumulation of multiple layers of single-cell-thick sheets of outer epidermal cells, formed at regular periods of about every two days to four days that correspond to the normal shedding frequency.
References
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Journal ArticleDOI
Adaptations of the spadefoot toad Scaphiopus couchi, to desert environments
TL;DR: Field and laboratory data indicate that toads are capable of stroing fat and metabolizing it during hibernation, and stored, dilute bladder urine may be utilized by toads to replace deficits in body fluids.
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Rate of water uptake through the integument of the desert toad, Bufo punctatus
Lon L. McClanahan,Roger Baldwin +1 more
TL;DR: These data are consistent with observations on the rehydration behavior of the toad (i.e. rapid emergence after rains and pressing against moist substrates) and can account for approximately 70 per cent of the rate of water uptake in toads totally submerged.
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Functional organization of amphibian skin
Journal ArticleDOI
Lipid barrier to water exchange in reptile epidermis.
TL;DR: Findings establish the importance of lipids in the permeability barrier of reptilian skin and suggest that keratin or scale morphology are of nominal importance in limiting water exchange.