Relevant bibliographies by topics / Frogs – Physiology

Academic literature on the topic 'Frogs – Physiology'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Frogs – Physiology.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Frogs – Physiology"

1

Smotherman, M. S., and P. M. Narins. "Hair cells, hearing and hopping: a field guide to hair cell physiology in the frog." Journal of Experimental Biology 203, no. 15 (August 1, 2000): 2237–46. http://dx.doi.org/10.1242/jeb.203.15.2237.

Full text
Abstract:
For more than four decades, hearing in frogs has been an important source of information for those interested in auditory neuroscience, neuroethology and the evolution of hearing. Individual features of the frog auditory system can be found represented in one or many of the other vertebrate classes, but collectively the frog inner ear represents a cornucopia of evolutionary experiments in acoustic signal processing. The mechano-sensitive hair cell, as the focal point of transduction, figures critically in the encoding of acoustic information in the afferent auditory nerve. In this review, we provide a short description of how auditory signals are encoded by the specialized anatomy and physiology of the frog inner ear and examine the role of hair cell physiology and its influence on the encoding of sound in the frog auditory nerve. We hope to demonstrate that acoustic signal processing in frogs may offer insights into the evolution and biology of hearing not only in amphibians but also in reptiles, birds and mammals, including man.
APA, Harvard, Vancouver, ISO, and other styles
2

McCAY, MICHAEL G. "AERODYNAMIC STABILITY AND MANEUVERABILITY OF THE GLIDING FROG POLYPEDATES DENNYSI." Journal of Experimental Biology 204, no. 16 (August 15, 2001): 2817–26. http://dx.doi.org/10.1242/jeb.204.16.2817.

Full text
Abstract:
SUMMARY Gliding has evolved independently in two families of tree frog. Tree frogs glide to descend rapidly to mating sites over temporary pools on the forest floor or to escape predators. The physical mechanisms used by frogs to glide and maneuver were investigated using a combination of observations of live frogs (Polypedates dennysi) gliding in a tilted wind-tunnel and aerodynamic forces and torques measured from physical models of tree frogs in a wind-tunnel. Tree frogs maneuvered in the tilted wind-tunnel using two different turning mechanisms: a banked turn (the frog rolls into the turn) and a crabbed turn (the frog yaws into the turn). Polypedates dennysipossessed overall weak aerodynamic stability: slightly stable about the pitch and roll axis, slightly unstable about the yaw axis. The maneuverability of gliding tree frogs was quantified using a maneuverability index. The maneuverability of tree frogs was roughly equivalent for tree frogs performing a banked turn and performing a crabbed turn. The maneuverability of tree frogs was approximately one-third of the maneuverability of a falcon (Falcon jugger).
APA, Harvard, Vancouver, ISO, and other styles
3

Shirokova, N., J. García, G. Pizarro, and E. Ríos. "Ca2+ release from the sarcoplasmic reticulum compared in amphibian and mammalian skeletal muscle." Journal of General Physiology 107, no. 1 (January 1, 1996): 1–18. http://dx.doi.org/10.1085/jgp.107.1.1.

Full text
Abstract:
Puzzled by recent reports of differences in specific ligand binding to muscle Ca2+ channels, we quantitatively compared the flux of Ca2+ release from the sarcoplasmic reticulum (SR) in skeletal muscle fibers of an amphibian (frog) and a mammal (rat), voltage clamped in a double Vaseline gap chamber. The determinations of release flux were carried out by the "removal" method and by measuring the rate of Ca2+ binding to dyes in large excess over other Ca2+ buffers. To have a more meaningful comparison, the effects of stretching the fibers, of rapid changes in temperature, and of changes in the Ca2+ content of the SR were studied in both species. In both frogs and rats, the release flux had an early peak followed by fast relaxation to a lower sustained release. The peak and steady values of release flux, Rp and Rs, were influenced little by stretching. Rp in frogs was 31 mM/s (SEM = 4, n = 24) and in rats 7 +/- 2 mM/s (n = 12). Rs was 9 +/- 1 and 3 +/- 0.7 mM/s in frogs and rats, respectively. Transverse (T) tubule area, estimated from capacitance measurements and normalized to fiber volume, was greater in rats (0.61 +/- 0.04 microns-1) than in frogs (0.48 +/- 0.04 micron-1), as expected from the greater density of T tubuli. Total Ca in the SR was estimated as 3.4 +/- 0.6 and 1.9 +/- 0.3 mmol/liter myoplasmic water in frogs and rats. With the above figures, the steady release flux per unit area of T tubule was found to be fourfold greater in the frog, and the steady permeability of the junctional SR was about threefold greater. The ratio Rp/Rs was approximately 2 in rats at all voltages, whereas it was greater and steeply voltage dependent in frogs, going through a maximum of 6 at -40 mV, then decaying to approximately 3.5 at high voltage. Both Rp and Rs depended strongly on the temperature, but their ratio, and its voltage dependence, did not. Assuming that the peak of Ca2+ release is contributed by release channels not in contact with voltage sensors, or not under their direct control, the greater ratio in frogs may correspond to the relative excess of Ca2+ release channels over voltage sensors apparent in binding measurements. From the marked differences in voltage dependence of the ratio, as well as consideration of Ca(2+)-induced release models, we derive indications of fundamental differences in control mechanisms between mammalian and amphibian muscle.
APA, Harvard, Vancouver, ISO, and other styles
4

Maekawa, Shun, Hitomi Iemura, Yuko Kuramochi, Nami Kosaka-Nogawa, Hironori Nishikawa, Youichi Aizawa, and Takashi Kato. "A New Animal Model for Anemia Induced by Environmental Low-Temperature: Physiology of Erythrocyte Production and Circulation." Blood 112, no. 11 (November 16, 2008): 4770. http://dx.doi.org/10.1182/blood.v112.11.4770.4770.

Full text
Abstract:
Abstract To survive, organisms must adapt to changes in the ambient environment. Here, we describe a new model of anemia based on exposure of African clawed frog, Xenopus laevis to low-temperature. Frogs exposed at low-temperature (5ºC) for five days had decreased numbers of peripheral blood erythrocytes, leukocytes, and thrombocytes as well as low hemoglobin levels. By contrast, spleen erythrocytes increased in number. Cell counts returned to normal in frogs re-warmed at ambient temperature (22ºC) for two days. To confirm these observations in vivo, we labeled peripheral blood cells with fluorescent reagent CFSE. During five days at 5ºC, labeled erythrocytes in peripheral blood decreased in number while those in spleen increased. When the temperature was raised to 22ºC, however, their numbers increased in peripheral blood. The findings suggested that exposure to low-temperature resulted in splenic pooling of peripheral erythrocytes. Accordingly, we looked at recovery from anemia induced by phenylhydrazine (PHZ) in this model. PHZ-treated frogs maintained at 22ºC decreased numbers of peripheral erythrocytes that were minimal on day 8, and increased gradually thereafter. In the liver, we found erythrocyte progenitors expressing erythropoietin receptor and GATA1-A detected by reverse transcription polymerase chain reactions and immunocytochemical staining but no mature forms. In PHZ-treated frogs exposed to 5ºC, peripheral erythrocyte counts remained minimal from day 8, and reversibly recovered when temperature returned to 22ºC. Erythrocyte progenitors were present in liver on day 8 but absent on day 12. Conversely, mature erythrocytes were absent in liver on day 8 but present on day 12. Finally, to learn whether the progenitors proliferate and differentiate without migrating from liver to peripheral blood, we treated frogs with thymidine analog bromodeoxyuridine (BrdU). In frogs kept at 22 ºC, BrdU-labeled erythrocytes were abundant in both liver and peripheral blood. However, frogs cooled at 5ºC had labeled cells in liver but few in peripheral blood. The findings suggest low-temperature exposure cause this anemia by impairing migration of mature/immature erythrocytes from the liver. In summary, this amphibian model offers a new perspective for investigating physiological effects of environmental temperature on vertebrate erythropoiesis.
APA, Harvard, Vancouver, ISO, and other styles
5

Layne, J. R., R. E. Lee, and T. L. Heil. "Freezing-induced changes in the heart rate of wood frogs (Rana sylvatica)." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 257, no. 5 (November 1, 1989): R1046—R1049. http://dx.doi.org/10.1152/ajpregu.1989.257.5.r1046.

Full text
Abstract:
During the first few hours of freezing the cardiovascular system must distribute cryoprotectant throughout the body of freeze-tolerant frogs. This study presents initial documentation of the changes in heart rate of wood frogs (Rana sylvatica) during nonlethal freezing. Heart rate was determined by measuring the electrocardiogram of frogs. Within 1 min of the onset of freezing the heart rate nearly doubled to approximately 8.0 beats/min. The heart rate began to slow after the first hour of the freeze, and the heart completely stopped beating near the completion of ice formation approximately 20 h later. Recordings from a single frog revealed that the heart beat resumes within 1 h after thawing and near-normal function is achieved after only a few hours. The release of the latent heat of fusion caused a rise in body temperature (1.7 degrees C) for a few hours and was closely correlated with an increase in the heart rate. However, other factors such as reduction in blood volume, increase in blood viscosity, and progressive hypoxia may prominently influence cardiac function indirectly. Regardless, the heart functions long enough to distribute glucose throughout the body during the first few hours of the freeze.
APA, Harvard, Vancouver, ISO, and other styles
6

Klop-Toker, Kaya L., Jose W. Valdez, Michelle P. Stockwell, Matthew E. Edgar, Loren Fardell, Simon Clulow, John Clulow, and Michael J. Mahony. "Assessing host response to disease treatment: how chytrid-susceptible frogs react to increased water salinity." Wildlife Research 44, no. 8 (2017): 648. http://dx.doi.org/10.1071/wr16145.

Full text
Abstract:
Context The severity and prevalence of the amphibian fungal pathogen, Batrachochytrium dendrobatidis (Bd) is correlated with several environmental variables, including salinity, temperature, and moisture content, which influence the pathogen’s growth and survival. Habitats that contain these environmental variables at levels outside of those optimal for Bd growth and survival may facilitate the survival of susceptible host species. Therefore, manipulation of environmental salinity is a potential management strategy to help conserve Bd-susceptible species. However, host behaviour also influences disease dynamics, and the success of habitat manipulation programs depends on how hosts use this altered habitat. Aims To assess if the Bd-susceptible green and golden bell frog, Litoria aurea, will select waterbodies with a salinity increased to S=3; if this selection is affected by infection; and if a frog’s time in a waterbody of this salinity affects infection load or blood physiology. Methods We conducted a filmed choice experiment and a 3-year field study where infected and uninfected frogs could choose between fresh or saline waterbodies. Key results In both the laboratory experiment and field study, Bd-infected L. aurea spent a significantly greater amount of time in or closer to a waterbody than uninfected frogs. Experimentally infected frogs tended to prefer the saline water over fresh, but their choice of water usage did not differ statistically from uninfected frogs. In the field, frogs began to avoid ponds when salinities rose above S=5. Conclusions Because both wild and captive, and infected and uninfected L. aurea readily selected waterbodies with a salinity of S=3, this salinity could potentially be used as a passive method for reducing the severity of Bd when managing this species. However, further testing is needed to understand the efficacy of this treatment, and care must be taken to prevent salinities rising above S=5, because this level seems to produce an avoidance response and therefore may not be suitable in every location. Implications Manipulation of aquatic habitats may be a worthwhile focus for Bd management in habitats where water level fluctuations are minimal.
APA, Harvard, Vancouver, ISO, and other styles
7

Baker, B. J., and J. M. L. Richardson. "The effect of artificial light on male breeding-season behaviour in green frogs, Rana clamitans melanota." Canadian Journal of Zoology 84, no. 10 (October 2006): 1528–32. http://dx.doi.org/10.1139/z06-142.

Full text
Abstract:
Artificial night lighting (or ecological light pollution) is only now gaining attention as a source of long-term effects on the ecology of both diurnal and nocturnal animals. The limited data available clearly indicate that artificial light can affect physiology and behaviour of animals, leading to ecological consequences at the population, community, and ecosystem levels. Aquatic ecosystems may be particularly vulnerable to such effects, and nocturnally breeding animals such as frogs may be especially affected. To address this potential, we quantify the effects of artificial light on calling and movement behaviour in a rural population of male green frogs ( Rana clamitans melanota (Rafinesque, 1820)) during the breeding season. When exposed to artificial light, frogs produced fewer advertisement calls and moved more frequently than under ambient light conditions. Results clearly demonstrate that male green frog behaviour is affected by the presence of artificial light in a manner that has the potential to reduce recruitment rates and thus affect population dynamics.
APA, Harvard, Vancouver, ISO, and other styles
8

Rubin, Bruce K., Chris I. Cheeseman, Sita Gourishankar, and Malcolm King. "Is there a seasonal variation in mucus transport and nutrient absorption in the leopard frog?" Canadian Journal of Physiology and Pharmacology 70, no. 4 (April 1, 1992): 442–46. http://dx.doi.org/10.1139/y92-056.

Full text
Abstract:
We postulated that as a hibernating species, frogs might have variable demands for nutrients at different seasons of the year and that this must be reflected in seasonal variations of physiologic processes related to nutrient transport and absorption. We examined the rate of mucus transport on the ciliated palate and the movement of nutrients across the intestinal lumen of leopard frogs, Rana pipiens. Mucus transport on the frog palate was strongly influenced by season, with maximal transport occurring in late June (Julian day 178, p = 0.0001; r = 0.58). This increased transport rate was associated with a summertime increase in mucus recoil (lower tangent δ) and a decrease in mucus hydration (increase in percent solids composition). Intestinal transport of leucine, lysine, and galactose did not appear to exhibit seasonal variability. These data suggest that different mechanisms may operate in determining seasonal variability in physiologic responses.Key words: mucociliary clearance, mucus viscoelasticity, intestinal absorption, Anura, seasonal variation.
APA, Harvard, Vancouver, ISO, and other styles
9

Alonso-Gómez, A. L., M. Tejera, M. Alonso-Bedate, and M. J. Delgado. "Response to pinealectomy and blinding in vitellogenic female frogs (Rana perezi) subjected to high temperature in autumn." Canadian Journal of Physiology and Pharmacology 68, no. 1 (January 1, 1990): 94–98. http://dx.doi.org/10.1139/y90-014.

Full text
Abstract:
The present experiments were carried out to investigate the effects of pinealectomy and bilateral enucleation on the ovarian activity in Rana perezi frogs maintained in 12-h light – 12-h dark photoperiod and 20 ± 1 °C during the vitellogenetic growth in late autumn. These environmental conditions, mainly temperature, induce a gonadal and metabolic response similar to that observed in the natural habitat in summer: a marked ovarian follicular regression, a depletion of the energetic resources from fat bodies and liver, and a minimum in oestradiol circulating levels. This response is partially blocked by pinealectomy and blinding. Protein phosphorus, as an index of vitellogenic proteins, and total ovary lipid content were significantly higher in pinealectomized and blinded frogs with respect to sham-operated animals. Likewise, oestradiol concentrations showed a significant increase during the dark phase of the daily photocycle in pinealectomized and blinded animals. From our results, we can suggest that the arrest of vitellogenesis, the depletion of energetic resources, and the regulation of oestradiol levels induced by the high temperature in Rana perezi frogs can be influenced, at least in part, by the pineal complex and lateral eyes.Key words: pinealectomy, blinding, vitellogenesis, frog, temperature.
APA, Harvard, Vancouver, ISO, and other styles
10

Medler, Scott. "Anesthetic MS-222 eliminates nerve and muscle activity in frogs used for physiology teaching laboratories." Advances in Physiology Education 43, no. 1 (March 1, 2019): 69–75. http://dx.doi.org/10.1152/advan.00114.2018.

Full text
Abstract:
Frogs are routinely used in physiology teaching laboratories to demonstrate important physiological processes. There have been recent directives that promote the use of the anesthetic MS-222 (tricaine methanesulfonate), rather than lowering body temperature with a cold water bath to prepare reptiles and amphibians for physiological experiments or euthanasia. Indeed, the most recent edition of the American Veterinary Medical Association (AVMA) Guidelines for the Euthanasia of Animals proclaims that chilling in water is not an appropriate method and advocates for the usage of MS-222 or other anesthetics. However, prominent researchers have responded to this position by highlighting evidence that cooling ectothermic vertebrates is, in fact, an effective and appropriate method. Furthermore, MS-222 is a known voltage-gated Na+ channel blocker, and this anesthetic’s impact on the physiology of excitable tissues suggests that its use might be incompatible with experiments on nerve and muscle tissues. In the present study, I examined the effects of MS-222 at a concentration of 1.5 g/l on nerve, skeletal muscle, and cardiac muscle physiology of frogs. I found that immersion of frogs in this anesthetic blocked basic nerve and muscle physiology, making the frogs unsuitable for laboratory experiments. Applying MS-222 directly to the sciatic nerve dramatically blocked normal excitation-contraction coupling in skeletal muscle preparations, and direct application to the heart caused the organs to stop contracting. Based on these results, I conclude that MS-222 at the concentration studied may be incompatible with physiological preparations that rely on electrically excitable tissues for their normal function. Physiology educators who must use MS-222 with frogs should empirically determine an appropriate dosage and recovery time before using the anesthetic in the teaching laboratory.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Frogs – Physiology"

1

Pearl, Christopher A. "Demonstration of pheromonal activity in the breeding glands of dwarf African clawed frogs (Hymenochirus sp.)." Scholarly Commons, 2000. https://scholarlycommons.pacific.edu/uop_etds/529.

Full text
Abstract:
Anurans rely mainly on vocalizations for mate attraction while urodeles rely mainly on pheromones. However, the presence of breeding glands suggests that anurans may also communicate with pheromones during reproduction. Previous studies have shown that male Hymenochirus sp. are able to attract females in a Y-maze, most likely through chemical means, but the source of the attractant has not been identified. By exposing female Hymenochirus sp. to choice tests in a Y -maze it was demonstrated that the breeding glands of male Hymenochirus sp. are the source of a mate-attractant pheromone. This study represents the first experimental evidence for a pheromonal function of breeding glands and further supports the idea that anurans utilize pheromones in reproduction. Evidence is also presented suggesting that the mate attraction is temperature sensitive with an upper limit around 30°C.
APA, Harvard, Vancouver, ISO, and other styles
2

Madison, Amanda L. "Effects of male breeding gland in hymenochirus on female reproductive output." Scholarly Commons, 2005. https://scholarlycommons.pacific.edu/uop_etds/610.

Full text
Abstract:
Normal male dwarf African clawed frogs, Hymenochirus sp., possess bilateral, sexually dimorphic, subcutaneous breeding glands just posterior to the forelimbs. Previous studies have shown these glands release pheromones that attract conspecific females. This thesis shows the pheromones also stimulate the reproductive system of conspecific females. Females exposed to normal males prior to mating then allowed to mate with the normal males released a higher number of eggs than females who were not exposed to normal males prior to mating. Microscopic examination of ovarian tissue revealed that females exposed to normal males also produced more highly-developed oocytes than did females not exposed to normal males. These results suggest male Hymenochirus use pheromones not only to attract potential mates, but to increase female receptivity and readiness to mate. Evolutionarily, these pheromonal effects would likely benefit males by increasing their chances of breeding, increasing the number of eggs released by their mates, and thus the number of offspring in the next generation.
APA, Harvard, Vancouver, ISO, and other styles
3

McDearmid, Jonathan R. "Noradrenergic control of spinal motor circuitry in two related amphibian species, Xenopus laevis and Rama temporaria." Thesis, University of St Andrews, 1998. http://hdl.handle.net/10023/15058.

Full text
Abstract:
1. The role of the catecholamine noradrenaline (NA) was examined during fictive swimming in Xenopus laevis tadpoles. 2. The primary effects of the amine in both embryonic and larval Xenopus was to markedly decrease motor frequency whilst simultaneously reducing rostrocaudal delays during swimming. 3. The NA-mediated modulation of swimming activity in Xenopus larvae can be reversed with phentolamine, a non-selective an adrenergic receptor antagonist, suggesting that NA may be acting through either ?1 or ?2 receptors, or a combination of both. 4. Intracellular recordings made from embryo spinal motorneurones revealed that reciprocal inhibitory glycinergic potentials are enhanced by NA. This effect is most prominent in caudal regions of the spinal cord where inhibitory synaptic drive is generally weaker. 5. NA was also found to enhance glycinergic reciprocal inhibition during swimming in larval spinal cord motomeurones. 6. Intracellular recordings, under tetrodotoxin, reveal that NA enhances the occurrence of spontaneous glycinergic inhibitory post synaptic potentials arising from the terminals of inhibitory intemeurones, suggesting that the amine is acting presynaptically to enhance evoked release of glycine during swimming. 7. The effects of NA on swimming frequency and rostrocaudal delay appear to be largely mediated through an enhancement of glycinergic reciprocal inhibition as blockade of glycine receptors with strychnine weakens the ability of the amine affect these parameters of motor output. 8. The effects of NA on motor output were also examined in embryos of the amphibian Rana temporaria. Whilst NA did not obviously affect swimming activity, the amine induced a non-rhythmic pattern of motor activity. 9. The free radical gas, nitric oxide also induced a non-rhythmic pattern of motor discharge that was remarkably similar to that elicited by NA, indicating that this neural messenger may be important for motor control.
APA, Harvard, Vancouver, ISO, and other styles
4

Pascarelli, Erica S. "Behavioral evidence for pheromonal communication : female discrimination of androgen status in male Xenopus laevis"." Scholarly Commons, 1995. https://scholarlycommons.pacific.edu/uop_etds/2289.

Full text
Abstract:
Testosterone has been implicated in the production of courtship pheromones in various animals. It is hypothesized that testosterone also stimulates the production and/or release of any courtship pheromones in Xenopus laevis. Castrated male frogs were implanted with empty or testosterone(T)-filled Silastic capsules. The water from testosterone-treated frogs (C+ T) and castrated frogs with empty capsules (C) was pumped into a plastic Y-maze at a flow rate of 65 ml/min. A female frog placed in theY-maze was observed for a sixty minute trial period, and the movements and position of the female frog were recorded. A total of ten female frogs were put through four different combinations of water: C+T versus C water, C+T versus plain water, C versus plain water, and plain water versus plain water. Results of a paired T -test demonstrate that the female frogs preferred the water holding C+ T males over the water holding C males (p = 0.035). These preliminary results reveal that female frogs can discern the androgen status of males based solely upon water-born chemicals released by the males. This suggests that a testosterone-dependent courtship pheromone may be released by male X. laevis for the purpose of attracting females for mating.
APA, Harvard, Vancouver, ISO, and other styles
5

Word, James Mabry. "Physiological adjustments to aestivation and activity in the cocoon-forming frogs Cyclorana platycephala and Cyclorana maini." University of Western Australia. School of Animal Biology, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0254.

Full text
Abstract:
The desert-adapted frogs Cyclorana platycephala and Cyclorana maini survive long periods of inhospitably hot and dry conditions by retreating underground and aestivating. While aestivating they suspend food and water intake as well as physical activity, depress their metabolic rate by ~80 %, and form cocoons that protect them against desiccation. How these frogs function during this exceptional state is largely unknown. This work characterized a number of physiological parameters in three metabolic states spanning their natural metabolic range: during aestivation (depressed metabolism), at rest (normal metabolism), and where possible, during exercise (elevated metabolism). The primary objective was to identify by comparison, physiological adjustments in these parameters to metabolic depression, as well as the scope of these parameters in frogs capable of aestivation. The parameters measured for C. maini were (a) the glucose transport kinetics and (b) the fluid balance of an extensive number of their individual organs. For C. platycephala, the parameters measured were (a) the activity of the cardiovascular system as indicated by heart rate and blood pressure and (b) the roles of pulmonary and cutaneous respiratory systems in gas exchange
APA, Harvard, Vancouver, ISO, and other styles
6

Allen, Leon Akila Glynne. "Effect of temperature on the physiology of two exotic frogs: possible causes of distribution." Thesis, University of Canterbury. Biological Sciences, 2015. http://hdl.handle.net/10092/10822.

Full text
Abstract:
Two Australian frogs were introduced to New Zealand over 100 years ago. Since their introduction they have become widespread and well established with Litoria ewingii being more prevalent in alpine and cooler areas of New Zealand, while Litoria raniformis is found in more temperate coastal areas. Very little physiological data exists for these frogs and aside from their distribution not much is known about them in New Zealand. Thus the effects of thermal acclimation and temperature change on respiration and locomotion were examined in these two exotic frogs. The more terrestrial and alpine dwelling L. ewingii was found to be able to thermally acclimate its respiration performance, where respiration was highest when acclimation temperature matched test temperature. It was also able to thermally acclimate its locomotory performance, jumping significantly further at lower temperatures, however, acclimation to high temperatures impacted its jump performance at cold temperatures. The frog L. raniformis was found to only be able to thermally acclimate its respiration and locomotion to high temperatures, as performance at low temperatures was often poor. The data shows that L. ewingii is a cold temperate frog rather than a warm habitat frog, while L. raniformis is an animal adapted to warm temperatures. From this we can begin to see the effect that temperature has on the physiology of these two exotic frogs and the major role that temperature may be playing in driving the differences seen in the distribution of these two species in New Zealand.
APA, Harvard, Vancouver, ISO, and other styles
7

Pearl, Christopher A. "Demonstration of pheromonal activity in the breeding glands of dwarf African clawed frogs (Hymenochirus sp.) : a thesis." Scholarly Commons, 2001. https://scholarlycommons.pacific.edu/uop_etds/529.

Full text
Abstract:
Anurans rely mainly on vocalizations for mate attraction while urodeles rely mainly on pheromones. However, the presence of breeding glands suggests that anurans may also communicate with pheromones during reproduction. Previous studies have shown that male Hymenochirus sp. are able to attract females in a Y-maze, most likely through chemical means, but the source of the attractant has not been identified. By exposing female Hymenochirus sp. to choice tests in a Y -maze it was demonstrated that the breeding glands of male Hymenochirus sp. are the source of a mate-attractant pheromone. This study represents the first experimental evidence for a pheromonal function of breeding glands and further supports the idea that anurans utilize pheromones in reproduction. Evidence is also presented suggesting that the mate attraction is temperature sensitive with an upper limit around 30°C.
APA, Harvard, Vancouver, ISO, and other styles
8

Wang, Yu. "HPLC method development for the evaluation of pheromones from the dwarf African clawed frog Hymenochirus." Scholarly Commons, 2003. https://scholarlycommons.pacific.edu/uop_etds/587.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Contreras, Heidy Lorena. "Effects of natural history on osmoregulatory behaviors in two stream-dwelling frogs (Pseudacris cadaverina and P. regilla)." CSUSB ScholarWorks, 2007. https://scholarworks.lib.csusb.edu/etd-project/3253.

Full text
Abstract:
Differences in osmoregulatory behaviors were studied in two stream-dwelling tree frogs (Pseudacris cadaverina and P. regilla) with different natural histories. This study supports the idea that the natural history of a species has a strong effect on behavior associated with osmoregulation.
APA, Harvard, Vancouver, ISO, and other styles
10

Wang, Yu. "HPLC method development for the evaluation of pheromones from the dwarf African clawed frog Hymenochirus : a thesis." Scholarly Commons, 2001. https://scholarlycommons.pacific.edu/uop_etds/587.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Frogs – Physiology"

1

Frogs: Biology, ecology, and uses. Hauppauge, N.Y: Nova Science Publisher's, 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

House, Donald. Depth perception in frogs and toads: A study in neural computing. New York: Springer-Verlag, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

House, Donald. Depth perception in frogs and toads: A study in neural computing. New York: Springer-Verlag, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Marieb, Elaine Nicpon. Human anatomy & physiology laboratory manual. 8th ed. San Francisco: Pearson/Benjamin Cummings, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Marieb, Elaine Nicpon. Human anatomy & physiology laboratory manual. 9th ed. San Francisco: Benjamin Cummings, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Marieb, Elaine Nicpon. Human anatomy & physiology laboratory manual. 8th ed. San Francisco: Pearson/Benjamin Cummings, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Marieb, Elaine Nicpon. Human anatomy & physiology laboratory manual. 6th ed. San Francisco: Benjamin Cummings, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Marieb, Elaine Nicpon. Human anatomy & physiology laboratory manual. 9th ed. San Francisco: Pearson/Benjamin Cummings, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Marieb, Elaine Nicpon. Human anatomy & physiology laboratory manual. 9th ed. San Francisco: Pearson/Benjamin Cummings, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Marieb, Elaine Nicpon. Human anatomy & physiology laboratory manual. 7th ed. San Francisco: Benjamin Cummings, 2002.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Frogs – Physiology"

1

Loo, Donald D. F., and Ernest M. Wright. "A Frog Model for CSF Secretion." In Physiology in Health and Disease, 83–97. New York, NY: Springer US, 2020. http://dx.doi.org/10.1007/978-1-0716-0536-3_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Ogawa, Yasuo, Takashi Murayama, and Nagomi Kurebayashi. "Comparison of properties of Ca2+ release channels between rabbit and frog skeletal muscles." In Muscle Physiology and Biochemistry, 191–201. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-5543-8_24.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Roberts, J. Dale, and Danielle Edwards. "The Evolution, Physiology and Ecology of the Australian Arid-Zone Frog Fauna." In On the Ecology of Australia’s Arid Zone, 149–80. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-93943-8_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Schettino, T., S. Curci, and E. Frömter. "On the Mechanism of Cl− Transport in Surface Epithelial Cells of Frog Stomach as Investigated with Intracellular Chloride Microelectrodes." In Ion Measurements in Physiology and Medicine, 144–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70518-2_23.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Geetha, N. "Normal Cardiogram of Frog." In Practical Physiology, 282. Jaypee Brothers Medical Publishers (P) Ltd., 2017. http://dx.doi.org/10.5005/jp/books/12995_39.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Geetha, N. "Effect of Temperature on Frog's Heart." In Practical Physiology, 286. Jaypee Brothers Medical Publishers (P) Ltd., 2017. http://dx.doi.org/10.5005/jp/books/12995_40.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Geetha, N. "Effect of Vagal Stimulation on Frog's Heart." In Practical Physiology, 293. Jaypee Brothers Medical Publishers (P) Ltd., 2017. http://dx.doi.org/10.5005/jp/books/12995_43.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Zingade, US. "Normal Cardiogram of Frog." In Manual of Practical Physiology, 218. Jaypee Brothers Medical Publishers (P) Ltd., 2007. http://dx.doi.org/10.5005/jp/books/10484_52.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Geetha, N. "Effect of Drugs and Ions on Isolated Frog's Heart." In Practical Physiology, 297. Jaypee Brothers Medical Publishers (P) Ltd., 2017. http://dx.doi.org/10.5005/jp/books/12995_44.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Zingade, US. "Effect of Temperature on Frog's Heart." In Manual of Practical Physiology, 220. Jaypee Brothers Medical Publishers (P) Ltd., 2007. http://dx.doi.org/10.5005/jp/books/10484_53.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Frogs – Physiology' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography