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Journal of Comparative Physiology B-biochemical Systemic and Environmental Physiology
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2.34
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3586
Papers 3596
1 page of 360 pages (3,596 results)
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#1Amanda Reynolds Kirby (UNT: University of North Texas)H-Index: 1
#2Dane A. Crossley (UNT: University of North Texas)H-Index: 20
Last. Edward M. Mager (UNT: University of North Texas)H-Index: 6
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Ectothermic animals are especially susceptible to temperature change, considering that their metabolism and core temperature are linked to the environmental temperature. As global water temperatures continue to increase, so does the need to understand the capacity of organisms to tolerate change. Sheepshead minnows (Cyprinodon variegatus) are the most eurythermic fish species known to date and can tolerate a wide range of environmental temperatures from - 1.9 to 43.0 °C. But little is known abou...
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#1Agnès Lewden (UDS: University of Strasbourg)H-Index: 4
#1Agnès LewdenH-Index: 5
Last. Dominic J. McCafferty (Glas.: University of Glasgow)H-Index: 20
view all 6 authors...
Penguins face a major thermal transition when returning to land in a hypothermic state after a foraging trip. Uninsulated appendages (flippers and feet) could provide flexible heat exchange during subsequent rewarming. Here, we tested the hypothesis that peripheral vasodilation could be delayed during this recovery stage. To this end, we designed an experiment to examine patterns of surface rewarming in fully hypothermic (the cloaca and peripheral regions (here; flippers, feet and the breast) < ...
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#1Rachael E. Dailey (UNF: University of North Florida)H-Index: 1
#2Kacie Smith (UNF: University of North Florida)
Last. Julie P. Avery (UNF: University of North Florida)H-Index: 2
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Mammals with increased requirements for adipose tissue stores, such as marine mammals, have altered nutrient allocation priorities compared to many terrestrial mammals and thus the physiological response to undernutrition (low nutritional status) and realimentation (refeeding) may differ. Key regulators of nutrient allocation and tissue specific growth include metabolic hormones of the somatotropic axis, growth hormone (GH) and insulin-like growth factor (IGF)-I, as well as satiety and adipose p...
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#1Zoe M. G. Skalkos (USYD: University of Sydney)
#2James U. Van Dyke (La Trobe University)H-Index: 12
Last. Camilla M. Whittington (USYD: University of Sydney)H-Index: 17
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Vertebrates that incubate embryos on or within the body cavity exhibit diverse strategies to provide nutrients to developing embryos, ranging from lecithotrophy (solely yolk-provided nutrition) to substantial matrotrophy (supplemental nutrients from the mother before birth). Syngnathid fishes (seahorses, pipefishes and sea dragons) are the only vertebrates to exhibit male pregnancy. Therefore, they provide a unique opportunity for comparative evolutionary research, in examining pregnancy indepen...
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#1Alyssa M. Weinrauch (UM: University of Manitoba)
#2Erik J. Folkerts (U of A: University of Alberta)H-Index: 7
Last. W. Gary Anderson (UM: University of Manitoba)H-Index: 21
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The role of the marine elasmobranch gastrointestinal tract in nitrogen-recycling and osmotic homeostasis has become increasingly apparent, with the gut microbial community likely playing a significant role converting urea, an important osmolyte in elasmobranchs, into ammonia. The Pacific spiny dogfish can experience and tolerate reduced environmental salinities, yet how this environmental challenge may affect the microbiome, and consequently nitrogen transport across the gut, is as of yet unknow...
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#1Stephanie Ortega-García (UNAM: National Autonomous University of Mexico)H-Index: 3
#2Daniel Ferreyra-García (UNAM: National Autonomous University of Mexico)H-Index: 1
Last. Jorge E. Schondube (UNAM: National Autonomous University of Mexico)H-Index: 20
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One of the consequences of anthropogenic climate change is an increase in the frequency and intensity of extreme weather events. These events have caused mass mortality of different species of wildlife, including bats. In this study, we exposed two species of neotropical nectar-feeding bats that live in contrasting environmental conditions (A. geoffroyi and L. yerbabuenae) to extreme high and low temperatures while offering them diets with different energy content. This experimental approach all...
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#1Zahra Nouri (CAS: Chinese Academy of Sciences)H-Index: 1
#2Xue-Ying Zhang (CAS: Chinese Academy of Sciences)H-Index: 6
Last. De-Hua Wang (CAS: Chinese Academy of Sciences)H-Index: 28
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Desert rodents are faced with many challenges such as high dietary salt in their natural habitats and they have evolved abilities to conserve water and tolerate salt. However, the physiological and molecular mechanisms involved in water and salt balances in desert rodents are unknown. We hypothesized that desert rodents regulated water and salt balances by altering the expression of AQP2 and α-ENaC in the kidney. Mongolian gerbils (Meriones unguiculatus), a desert species, were acclimated to dri...
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When animals are faced with a life-threatening challenge, they mount an organism-wide response (i.e. Plan A). For example, both the stress response (i.e. fight-or-flight) and the immune response recruit molecular resources from other body tissues, and induce physiological changes that optimize the body for defense. However, pathogens and predators often co-occur. Animals that can optimize responses for a dual challenge, i.e. simultaneous predator and pathogen attacks, will have a selective advan...
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#1Bernd Pelster (University of Innsbruck)H-Index: 26
#2Chris M. Wood (McMaster University)H-Index: 91
Last. Adalberto Luis Val (Amazon.com)H-Index: 35
view all 4 authors...
In the pirarucu (Arapaima gigas), gill surface area and thus gas exchange capacity of the gills are reduced with proceeding development. It, therefore, is expected that A. gigas, starting as a water breather, progressively turns into an obligate air-breathing fish using an air-breathing organ (ABO) for gas exchange. We assessed the air-breathing activity, O2 and CO2 exchange into air and water, ammonia-N and urea-N excretion, ion flux rates, and activities of ion transport ATPases in large versu...
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#1Noel R. Park (Princeton University)H-Index: 2
#2Halie A. Taylor (AU: Auburn University)H-Index: 2
Last. Wendy R. Hood (AU: Auburn University)H-Index: 14
view all 8 authors...
The life-history patterns that animals display are a product of their ability to maximize reproductive performance while concurrently balancing numerous metabolic demands. For example, the energetic costs of reproduction may reduce an animal’s ability to support self-maintenance and longevity. In this work, we evaluated the impact of parity on mitochondrial physiology in laboratory mice. The theory of mitohormesis suggests that modest exposure to reactive oxygen species can improve performance, ...
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