Academic literature on the topic 'Amphibiens – Physiologie'

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Journal articles on the topic "Amphibiens – Physiologie"

1

Çömden, Esra Akat, Melodi Yenmiş, and Berna Çakır. "The Complex Bridge between Aquatic and Terrestrial Life: Skin Changes during Development of Amphibians." Journal of Developmental Biology 11, no. 1 (2023): 6. http://dx.doi.org/10.3390/jdb11010006.

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Amphibian skin is a particularly complex organ that is primarily responsible for respiration, osmoregulation, thermoregulation, defense, water absorption, and communication. The skin, as well as many other organs in the amphibian body, has undergone the most extensive rearrangement in the adaptation from water to land. Structural and physiological features of skin in amphibians are presented within this review. We aim to procure extensive and updated information on the evolutionary history of amphibians and their transition from water to land—that is, the changes seen in their skin from the la
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2

Hernandez-Caballero, Irene, Luz Garcia-Longoria, Ivan Gomez-Mestre, and Alfonso Marzal. "The Adaptive Host Manipulation Hypothesis: Parasites Modify the Behaviour, Morphology, and Physiology of Amphibians." Diversity 14, no. 9 (2022): 739. http://dx.doi.org/10.3390/d14090739.

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Parasites have evolved different strategies to increase their transmission from one host to another. The Adaptive Host Manipulation hypothesis states that parasites induce modifications of host phenotypes that could maximise parasite fitness. There are numerous examples of parasite manipulation across a wide range of host and parasite taxa. However, the number of studies exploring the manipulative effects of parasites on amphibians is still scarce. Herein, we extensively review the current knowledge on phenotypic alterations in amphibians following parasite infection. Outcomes from different s
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3

Blaustein, Andrew R., Stephanie S. Gervasi, Pieter T. J. Johnson, et al. "Ecophysiology meets conservation: understanding the role of disease in amphibian population declines." Philosophical Transactions of the Royal Society B: Biological Sciences 367, no. 1596 (2012): 1688–707. http://dx.doi.org/10.1098/rstb.2012.0011.

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Infectious diseases are intimately associated with the dynamics of biodiversity. However, the role that infectious disease plays within ecological communities is complex. The complex effects of infectious disease at the scale of communities and ecosystems are driven by the interaction between host and pathogen. Whether or not a given host–pathogen interaction results in progression from infection to disease is largely dependent on the physiological characteristics of the host within the context of the external environment. Here, we highlight the importance of understanding the outcome of infec
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4

Glinski, Donna A., S. Thomas Purucker, Robin J. Van Meter, Marsha C. Black, and W. Matthew Henderson. "Endogenous and exogenous biomarker analysis in terrestrial phase amphibians (Lithobates sphenocephala) following dermal exposure to pesticide mixtures." Environmental Chemistry 16, no. 1 (2019): 55. http://dx.doi.org/10.1071/en18163.

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Environmental contextMetabolomics can be used to provide a snapshot of an organism’s physiology as the organism is exposed to varying environmental conditions. In this study, laboratory-reared amphibians were exposed to multiple pesticides, analogous to field exposures, resulting in an impact to both pesticide body concentrations and the amphibians’ hepatic metabolome. These data can be used in the environmental and ecological risk assessment of multiple pesticides in non-target species. AbstractPesticide mixtures are frequently co-applied throughout an agricultural growing season to maximise
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Storey, Kenneth B., and Janet M. Storey. "Molecular Physiology of Freeze Tolerance in Vertebrates." Physiological Reviews 97, no. 2 (2017): 623–65. http://dx.doi.org/10.1152/physrev.00016.2016.

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Freeze tolerance is an amazing winter survival strategy used by various amphibians and reptiles living in seasonally cold environments. These animals may spend weeks or months with up to ∼65% of their total body water frozen as extracellular ice and no physiological vital signs, and yet after thawing they return to normal life within a few hours. Two main principles of animal freeze tolerance have received much attention: the production of high concentrations of organic osmolytes (glucose, glycerol, urea among amphibians) that protect the intracellular environment, and the control of ice withi
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6

Frumkes, Thomas E., and Thor Eysteinsson. "The cellular basis for suppressive rod–cone interaction." Visual Neuroscience 1, no. 3 (1988): 263–73. http://dx.doi.org/10.1017/s0952523800001929.

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AbstractThe response to spatially focal flicker is enhanced by dim, spatially diffuse, rod-stimulating backgrounds. This effect is called suppressive rod-cone interaction (SRCI) as it reflects a tonic, suppressive influence of dark-adapted rods upon cone pathways which is removed by selective rod-light adaptation. SRCI is observed in amphibian retina with intracellular recordings from most cone-driven cells including the cones themselves, and is most obvious using stimuli flickering at frequencies too rapid for rods to follow. SRCI is blocked by glutamate analogs which selectively block the ph
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7

Svinin, Anton O., Igor V. Chikhlyaev, Ivan W. Bashinskiy, et al. "Diversity of trematodes from the amphibian anomaly P hotspot: Role of planorbid snails." PLOS ONE 18, no. 3 (2023): e0281740. http://dx.doi.org/10.1371/journal.pone.0281740.

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Trematode infection of the second intermediate hosts can lead to changes in their fitness and, as a result, a change in the invasion rate of animal communities. It is especially pronounced during the invasion of parasite species that reduce activity due to the manipulation of hosts through the changes of their morphology and physiology. One of these cases is an anomaly P syndrome hotspot found in some populations of water frogs and toads in Europe caused by the trematode Strigea robusta metacercariae. The occurrence of pathogen and their participation in ecosystems are intrigues questions in t
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8

Yermolenko, S. V., V. S. Nedzvetsky, V. Y. Gasso, V. A. Spirina, V. B. Petrushevskyi, and V. V. Kyrychenko. "Low doses of imidacloprid induce neurotoxic effects in adult marsh frogs: GFAP, NfL, and angiostatin as biomarkers." Regulatory Mechanisms in Biosystems 13, no. 4 (2022): 426–30. http://dx.doi.org/10.15421/022256.

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Imidacloprid is one of the most widely used insecticides in the world. The neurotoxicity of imidacloprid in adult amphibians has not been studied thoroughly. We investigated the expression of glial fibrillary acidic protein (GFAP), neurofilament light chain (NfL) and angiostatin in the amphibian brain to identify valid biomarkers of low dose imidacloprid exposure. For the experiment, 30 individuals of the marsh frog Pelophylax ridibundus were selected. The amphibians were divided into five groups. The duration of the experiment was 7 and 21 days. The exposure concentrations were 10 and 100 µg/
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9

Turko, Andy J., Giulia S. Rossi, and Patricia A. Wright. "More than Breathing Air: Evolutionary Drivers and Physiological Implications of an Amphibious Lifestyle in Fishes." Physiology 36, no. 5 (2021): 307–14. http://dx.doi.org/10.1152/physiol.00012.2021.

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Amphibious and aquatic air-breathing fishes both exchange respiratory gasses with the atmosphere, but these fishes differ in physiology, ecology, and possibly evolutionary origins. We introduce a scoring system to characterize interspecific variation in amphibiousness and use this system to highlight important unanswered questions about the evolutionary physiology of amphibious fishes.
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10

Gull, Mazhar, Stefan M. Schmitt, Roland E. Kälin, and André W. Brändli. "Screening of Chemical Libraries UsingXenopusEmbryos and Tadpoles for Phenotypic Drug Discovery." Cold Spring Harbor Protocols 2023, no. 4 (2022): pdb.prot098269. http://dx.doi.org/10.1101/pdb.prot098269.

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Phenotypic drug discovery assesses the effect of small molecules on the phenotype of cells, tissues, or whole organisms without a priori knowledge of the target or pathway. Using vertebrate embryos instead of cell-based assays has the advantage that the screening of small molecules occurs in the context of the complex biology and physiology of the whole organism. Fish and amphibians are the only classes of vertebrates with free-living larvae amenable to high-throughput drug screening in multiwell dishes. For both animal classes, particularly zebrafish andXenopus, husbandry requirements are str
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