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Thursday, July 30, 2020 | History

4 edition of The physiological effects of dehydration in the toad, Bufo boreas found in the catalog.

The physiological effects of dehydration in the toad, Bufo boreas

Robert Lee Vandergrift

The physiological effects of dehydration in the toad, Bufo boreas

by Robert Lee Vandergrift

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  • 10 Currently reading

Published .
Written in English


Edition Notes

Statementby Robert Lee Vandergrift.
Classifications
LC ClassificationsMicrofilm 40561 (Q)
The Physical Object
FormatMicroform
Paginationvii, 59 leaves
Number of Pages59
ID Numbers
Open LibraryOL1826923M
LC Control Number89893975

  My work addresses problems on several levels including ecological, organismal, and molecular questions. In my work on metamorphosis, I study a local toad (Bufo boreas). Studies examine the effects of temperature on developmental rates, interactions between the thyroid hormones and steroids, and hormonal regulation of skin gland development. dehydration may be explained by organ-specific physiological adjustments in response to the functional stress introduced by the dehydration itself. As dehydration progressed, evaporative water loss diminished and water reabsorption increased. In both cases, the increase in body fluid concentration associated.

  Simple teaching experiments demonstrating endocrinological concepts are difficult to come by. I discuss a simple experiment demonstrating control of cutaneous drinking by the hormone angiotensin II in terrestrial toads, designed after methods published in the primary literature and presented herein to make this exercise more widely accessible to ABT readers. . Wildfire effects on water temperature and selection of breeding sites by the boreal toad (Bufo boreas) in seasonal wetlands. Herpetological Conservation and Biology Hossack, B.R., S.A. Diamond, and P.S. Corn.

Dehydration also appeared to reduce the core temperature a person could tolerate, as core temperature at exhaustion was about ° C (° F) lower in the dehydrated state. The main reasons dehydration has an adverse effect on exercise performance can be summarized as follows: • Reduction in blood volume • Decreased skin blood flow. absence, may effect an animal's ability to suc- toad (Bufo boreas) tadpoles; specifically, snakes Physiological stress from heat and dehydration (Tracy, ) may be extreme for a toadlet weighing a fraction of a gram. Also, jumping ability of Pseudacris (distance), which might af .


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The physiological effects of dehydration in the toad, Bufo boreas by Robert Lee Vandergrift Download PDF EPUB FB2

Dehydration of toads with empty bladders causes elevation of the sodium concentration (C) of their plasma according to the relationship: C = C 0 × original water content original water content − water deficit, where C 0 is the plasma sodium concentration of the hydrated toad and volumes are expressed as ml/ g of hydrated by: Effects of Body Temperature and Hydration State on Organismal Performance of Toads, Bufo americanus March Physiological and Biochemical Zoology 76(2) Marion R.

Preest, F. Harvey Pough, Effects of Body Temperature and Hydration State on Organismal Performance of Toads, Bufo americanus, Physiological and Biochemical Zoology, /, 76, 2, (), ().Cited by:   The importance of osmolality and volume are emphasized when discussing the physiology, assessment, and performance effects of dehydration.

The underappreciated physiologic distinction between a loss of hypo‐osmotic body water (intracellular dehydration) and an iso‐osmotic loss of body water (extracellular dehydration) is presented and Cited by: The full text of this article hosted at is unavailable due to technical by: Amphibians are declining dramatically around the globe, due primarily to two major threats: habitat destruction and emerging infectious diseases.

The western toad, Bufo boreas, is an IUCN red-listed species thought to be affected by both these factors. The objectives of this thesis were to (1) determine how forest fragmentation affects western toad movement behaviour.

Jay W Fair, Comparative rates of rehydration from soil in two species of toads, Bufo boreas and Bufo punctatus, Comparative Biochemistry and Physiology, /X(70), 34, 2, (), (). Difficulties in the gastrointestinal tracts are one of the earliest consequences of dehydration.

Ninety eight percent of the mucous lining of the stomach is composed of water. So, when your body doesn’t have enough water, your stomach acid can start to damage the lining and cause indigestion, constipation, and heartburn.

-Lfter dehydration, the toad Bufo regularis is capable of a large increase in its rate of water uptake, whereas a wholly aquatic frog (Xenopus laevis) is not (Ewer, ). Species of frogs of the genus Neobatrachus from dry areas recover water losses.

The rate of cutaneous water uptake after dehydration was significantly depressed in functionally neurohypophysectomized toads (Bufo marinus), which consequently. The concentrations of taurine in blood and brain regions of the toadBufo boreas have been measured. Most of these values are considerably lower than those found in mammals.

Using an antibody prepared against conjugated taurine, the distribution of taurine in three brain regions of the toad has been visualized. The possible osmoregulatory functions of taurine have been. Mullally DP () Habits and minimum temperatures of the toad Bufo boreas halophilus.

Copeia – Google Scholar Packard GC, Packard MJ () Hatchling painted turtles (Chrysemys picta) survive exposure to subzero temperatures during hibernation by. 1. The rates of rehydration from a varying soil particle size was investigated for two species of toads, Bufo boreas and Bufo punctatus.

Both species of toads were found to gain comparatively equal rates of water per unit of surface area, about 40 mg/cm 2 per hr. However, the larger surface area to volume ratio of B.

punctatus allows this anuran to regain. The effects of arginine vasotocin and various microtubular poisons on water transfer and sodium transport across the pelvic skin of the toad Bufo boreas in vitro. Kent W, McClanahan LL. Gen Comp Endocrinol, 40(2), 01 Feb Cited by: 6 articles | PMID: By the time these effects of dehydration are setting in, sports performance has already experienced a measurable decline.

Eventually, sports performance fails, and more serious dehydration dangers can arise like heat exhaustion and heat stroke. These heat illnesses may be accompanied by symptoms like headache, nausea, vomiting and worse.

Hot-air dehydration was developed in France in Modern dehydration techniques have been largely stimulated by the advantages dehydration gives in compactness; on the average, dehydrated food has about 1 / 15 the bulk of the original or reconstituted product.

The need to transport large shipments of food over great distances during World War II provided much of. The western toad (Bufo boreas) has an extensive range throughout western North America, including southern areas of the Yukon Territory, most of British Columbia, and western Alberta.

It is one of only a few amphibians inhabiting alpine areas. Two subspecies are recognized, the most widely distributed of which occurs within Canada (B. boreas). As dehydration progresses, the tissues tend to shrink, the skin becomes dry and wrinkled, and the eyes become sunken and the eyeballs soft.

Fever develops, possibly from mild to marked, as dehydration progresses. Dehydration itself probably affects the temperature regulatory centres in the brain. Sullivan, Polly Ann, "Effects of sodium chloride and sodium gluconate concentration on hydration behavior and water transport in the red-spotted toad, Bufo punctatus" ().

UNLV Retrospective Theses & Dissertations. This Thesis is protected by copyright and/or related rights. ABSTRACT: Batrachochytrium dendrobatidis causes mortality in various amphibian species including the boreal toad Anaxyrus (Bufo) boreas purpose of this study was to determine the physiological effects of this pathogen on experimentally infected boreal toads.

Plasma osmolality, sodium, and potassium concentrations were analyzed to evaluate the. Extensive information about Bufo alvarius, the Colorado River toad, Sonoran Desert toad, including history Dehydration is a risk in environmental chambers that regulate temperature by passing air over refrigerating coils.

and P. Chelgren. The role of behavioral thermoregulation in the growth energetics of the toad, Bufo boreas.Bufo boreas Baird and Girard, (b) Western Toad. Erin Muths 1 Priya Nanjappa 2.

1. Historical versus Current Distribution. Western toads (Bufo boreas) occur throughout much of western North are found throughout the Pacific Northwest, north through western Canada and into the southeastern portion of Alaska (Wright and Wright, ; Herreid, ; .Batrachochytrium dendrobatidis causes mortality in various amphibian species including the boreal toad Anaxyrus (Bufo) boreas boreas.

The purpose of this study was to determine the physiological effects of this pathogen on experimentally infected boreal toads. Plasma osmolality, sodium, and potassium concentrations were analyzed to evaluate the differences .