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Keywords: Metabolism
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Journal Articles
J Exp Biol jeb.244847.
Published: 8 February 2023
... speed. Metabolic and thermoregulatory measurements at rest showed that T b , evaporative water loss, and breathing frequency increased at T a of 36°C and above. Therefore, the upper threshold temperatures at which endurance capacity is impaired are similar to those inducing heat responses at rest...
Journal Articles
J Exp Biol jeb.243875.
Published: 30 January 2023
... hypothesis , variation in prenatal exposure to hormones is likely to influence telomere length. Yet the contribution of key metabolic hormones, i.e. thyroid hormones (THs), has been largely ignored. We recently showed that in contrast to predictions, exposure to elevated prenatal THs increased postnatal...
Journal Articles
J Exp Biol jeb.243877.
Published: 18 January 2023
... capacities of lizards to depress body temperature ( T b ) through evaporative cooling via panting. Here, we link panting and T b depression with rates of evaporative water loss and its metabolic costs under high heat loads. We used flow-through respirometry to measure evaporative water loss rates...
Journal Articles
J Exp Biol (2023) 226 (1): jeb244746.
Published: 13 January 2023
... and behavioral impacts of CO 2 narcosis in bumble bees ( Bombus impatiens ) . J. Insect Physiol. 101 , 57 - 65 . 10.1016/j.jinsphys.2017.06.014 Arrese , E. L. and Soulages , J. L. ( 2010 ). Insect fat body: energy, metabolism, and regulation . Annu. Rev. Entomol. 55 , 207 - 225...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (22): jeb244518.
Published: 16 November 2022
... change. Biosynthesis Development Metabolism Oyster Temperature National Science Foundation http://dx.doi.org/10.13039/100000001 Animals differ in their range of temperature tolerances throughout their life-history, and across latitudes and ocean depths ( Schmidt-Nielsen...
Journal Articles
J Exp Biol (2022) 225 (21): jeb244831.
Published: 14 November 2022
..., acclimatory and evolutionary. Acutely, passive temperature effects often dictate an expected 2-fold increase in metabolic processes for every 10°C change in temperature ( Q 10 ). Yet, these acute responses often are mitigated through acclimation within an individual or evolutionary adaptation within...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (16): jeb244440.
Published: 23 August 2022
... monitored for 12 months North American colonies of honeybees enduring important temperature variations throughout the year, to assess the metabolism and immune system of summer and winter honeybee individuals. Our results show that in flight muscle, mitochondrial respiration via complex I during winter...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (12): jeb243252.
Published: 17 June 2022
... lower stroke frequencies for diving than for flying (in line with allometric predictions for auks), dive costs were estimated to surpass flight costs in our sample of birds (flying: 7.24× basal metabolic rate, BMR; diving: 9.37× BMR). As expected, ODBA was not an effective predictor of DEE...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (9): jeb243966.
Published: 29 April 2022
... of temperature on metabolism of harmonia axyridis (col: coccinellidae) from second instars to adults . Physiol. Ecol. 33 , 832 - 838 . 10.1603/0046-225X-33.4.832 Bjørge , J. D. , Overgaard , J. , Malte , H. , Gianotten , N. and Heckmann , L.-H. ( 2018 ). Role of temperature...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (7): jeb242994.
Published: 6 April 2022
...Eric Ste-Marie; Yuuki Y. Watanabe; Jayson M. Semmens; Marianne Marcoux; Nigel E. Hussey ABSTRACT Field metabolic rate (FMR) is a holistic measure of metabolism representing the routine energy utilization of a species living within a specific ecological context, thus providing insight into its...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (6): jeb242773.
Published: 23 March 2022
...Linnea E. Pearson; Emma L. Weitzner; Lars Tomanek; Heather E. M. Liwanag ABSTRACT Allocation of energy to thermoregulation greatly contributes to the metabolic cost of endothermy, especially in extreme ambient conditions. Weddell seal ( Leptonychotes weddellii ) pups born in Antarctica must survive...
Journal Articles
J Exp Biol (2022) 225 (5): jeb243214.
Published: 7 March 2022
... and maintenance, are contingent on the plasticity of metabolic processes (‘metabolic plasticity’). It is likely that the Last Universal Common Ancestor (LUCA), 4 billion years ago, already possessed energy-sensing molecules that could adjust energy (ATP) production to meet demand. The earliest manifestation...
Journal Articles
J Exp Biol (2022) 225 (5): jeb243131.
Published: 4 March 2022
... cricetid rodents ( Neotoma albigula , Neotoma lepida , Peromyscus eremicus , Peromyscus crinitus ) exposed to high T a , at four sites in the Mojave Desert. We measured metabolism, evaporative water loss and T b using flow-through respirometry. When exposed to T a ≥ T b , rodents showed steep increases...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (3): jeb239004.
Published: 28 January 2022
... differences in food abundance. When coupled to appetite (urge to eat), this is expressed as the eating schedule of a species. Food availability times affect daily and seasonal physiology and behaviour of organisms both directly (by affecting metabolic homeostasis) and indirectly (by altering synchronization...
Journal Articles
J Exp Biol (2022) 225 (2): jeb243208.
Published: 27 January 2022
...Anusha Shankar; Isabelle N. H. Cisneros; Sarah Thompson; Catherine H. Graham; Donald R. Powers ABSTRACT Many endotherms use torpor, saving energy by a controlled reduction of their body temperature and metabolic rate. Some species (e.g. arctic ground squirrels, hummingbirds) enter deep torpor...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (1): jeb243304.
Published: 11 January 2022
...Linda Adzigbli; Eugene P. Sokolov; Siriluck Ponsuksili; Inna M. Sokolova ABSTRACT Hypoxia is a major stressor for aquatic organisms, yet intertidal organisms such as the oyster Crassostrea gigas are adapted to frequent oxygen fluctuations by metabolically adjusting to shifts in oxygen and substrate...
Journal Articles
J Exp Biol (2021) 224 (19): jeb242972.
Published: 14 October 2021
... that, like many other semi-aquatic and fossorial small mammals, star-nosed moles would exhibit: (i) a blunted (i.e. delayed or reduced) hypoxic ventilatory response, (ii) a reduced metabolic rate and (iii) a lowered body temperature ( T b ) in hypoxia. We thus non-invasively measured these variables from...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (18): jeb242529.
Published: 27 September 2021
...Jocelyn P. Colella; Danielle M. Blumstein; Matthew D. MacManes ABSTRACT Metabolism is a complex phenotype shaped by natural environmental rhythms, as well as behavioral, morphological and physiological adaptations. Metabolism has been historically studied under constant environmental conditions...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (17): jeb242745.
Published: 3 September 2021
... declare no competing or financial interests. 22 4 2021 10 8 2021 © 2021. Published by The Company of Biologists Ltd 2021 Summary: Intermittent heat shock in oysters acclimated to normal and high temperature modulates mitochondrial and reactive oxygen species metabolism...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (15): jeb242218.
Published: 5 August 2021
...% less energy than other marine mammals of similar body mass. The two oldest dolphins (>40 years) showed a lower TEE, similar to the decline in TEE seen in older humans. To our knowledge, this is the first study to show an age-related metabolic decline in a large non-human mammal. * Author...
Includes: Supplementary data