Showing papers in "Journal of Thermal Biology in 2015"

TL;DR: The 'tried and true' measures of insect cold tolerance, the equipment necessary for these measurement, and the ecological and biological significance of each are covered, and a framework and workflow for measuring cold tolerance and low temperature performance in insects is suggested.

TL;DR: A set of models that simulate ectotherms moving on a thermal landscape according to simple sets of diffusion-based rules indicate that both simple behavioral rules and interactions between body size and spatial patterns of thermal variation can profoundly affect the distribution of realized body temperatures experienced by ectotherm.

TL;DR: It is concluded that overwinter energetics provides a useful lens through which to link physiology and ecology and winter and summer in studies of insect responses to their environment.

TL;DR: The results showed that high temperature-induced oxidative stress may cause pufferfish blood cells apoptosis, and cooperatively activated p53-Bax and caspase-dependent apoptotic pathway.

TL;DR: Short term isothermic methods are optimal for individuals aiming to achieve heat adaptation most economically, i.e. when integrating heat acclimation into a pre-competition taper, analogous to more efficient administration for maximising adaptation.

TL;DR: The dual-phase-lag model of bio-heat transfer has been studied using Gaussian distribution source term and it has been found that large differences in the temperature at the hyperthermia position and time to achieve thehyperthermia temperature exist, when the authors increase the value of τT.

TL;DR: Participants with larger overall activation and reduced low frequency component for vastus lateralis activation presented a better adaptive response of their thermoregulatory system by showing fewer changes in skin temperature after incremental cycling test.

TL;DR: Effects of oxygen may resolve the life-history puzzle of the temperature-size rule in aquatic ectotherms as high temperature increased both growth rate and final size.

TL;DR: The importance of estimating CTMax values at realistic rates that species encounter in their environment and thus have an ecological value is highlighted, as subtidal species presented lower CTMax, at all warming rates tested.

TL;DR: This study provides the first evidence of an expression response in the heat shock genes of embryos of loggerhead sea turtles exposed to realistic and near-lethal temperatures for 1 or 3 hours and finds both Hsp70 and Hsp90 are useful biomarkers for assessing heat stress in the late-stage embryos of sea turtles.

TL;DR: expression pattern of heat shock protein genes indicated that amongst the breeds, the expression was higher in Murrah buffalo compared to Sahiwal and Tharparkar cattle, thereby indicating the more adaptive capacity of later during periods of stress.

TL;DR: The new hybrid PCS incorporating both ventilation fans and phase change materials may be an effective means of ameliorating symptoms of heat stress in both hot-humid and hot-dry environments.

TL;DR: The GIFT tilapia were able to selectively metabolize fatty acids for energy needs during the early period of exposure to low-temperature stress, but as the duration of the stressor and loss of muscle fat increased, the fish began to metabolize long-chain polyunsaturated fatty acids.

TL;DR: Considering their application in industrial settings, ACG-Cs, LCGs, and HBCG-AL are practical for work, in which workers do not move frequently, whereas ACg-Ns and PCMCGs are more applicable for the majority of occupational workers.

TL;DR: The results showed that cumulative mortalities of fish larvae were significantly increased at low temperatures and at the highest temperature, implying that the fish could develop some degrees of thermal tolerance through temperature acclimation.

TL;DR: Comparing critical thermal maximum (CTmax) and warming tolerance (WT): the difference between CTmax and maximum temperature, Tmax, as well as CTmax acclimatory capacity of toad species from the Atlantic forest and the Brazilian Caatinga, indicates that species can have both high CT max and high CTmax plasticity.

TL;DR: A novel combination of field, laboratory, and modeling approaches are presented to examine body temperature regulation, habitat thermal quality, and hours of thermal restriction on the activity of two sympatric, aridlands horned lizards at three contrasting Chihuahuan Desert sites in Mexico to estimate local extinction risk under predicted climate change.

TL;DR: This work considers how polar terrestrial invertebrates manage this scenario in light of their physiology and ecology, and the interaction between high temperature and low water availability, and their response to them.

TL;DR: The results serve as empirical evidence for the adaptive significance of TSR and validation of the cellular mechanism for the observed response for L. inermis.

TL;DR: This article reports a numerical study pertaining to simultaneous estimation of size, radial location and angular location of a malignant tumor in a 3-D human breast using the curve fitting method.

TL;DR: The present heat transfer model and specific duration time concept could be used to optimize and evaluate this kind of LCG respectively and manifests that the thermal resistance between the cooling water and the ambient (R2) is more sensitive to the flowrate than to the one between the skin surface and the coolingWater (R1).

TL;DR: It is suggested that mitochondrial superoxide production could play an influential role in augmenting oxidative damage to avian muscle cells, possibly via the up-regulation of NOX4 and down- regulation of HO-1 in heat-stressed avian Muscle cells.

TL;DR: Results of this study illustrate the importance of accounting for mass, among and within colony variation, and interspecific differences in diel activity patterns, which are often neglected in studies of ant thermal physiology.

TL;DR: It is found that running with graduated compression stockings produces a greater increase of skin temperature without modifying the athlete's heart rate and perception of fatigue.

TL;DR: High-elevation lizards display a number of thermoregulatory strategies that allow them to achieve high optimum body temperatures in a low thermal-quality habitat and thus maximize speed performance, which suggests that both preferred body temperature and thermal dependence of speed performance are co-adapted along the elevational gradient.

TL;DR: Widespread tolerance, previously undocumented for the Araneae, Nematocera or Coleoptera, of both direct exposure to at least -24 °C and the rapid and large temperature fluctuations are indicated, suggesting that the studied polar soil invertebrate community may be robust to at at least one important predicted consequence of projected climate change.

TL;DR: A capacity for rapid acclimation, combined with the capacity for behavioral thermoregulation, is a strong candidate mechanism that explains the broad habitat use and could help explain the successful pantropical distribution of fiddler crabs.

TL;DR: Overall results of this study suggest that multiple environmental factors play a role in seasonal acclimation in B. bendelisis, which modulate the thermal tolerance, oxygen consumption, respiratory burst activity and status of anti-oxidative potential in wild environment.

TL;DR: Three of the four genes (hsp23, 70 and 90) were upregulated by heat stress at mRNA, showing differential expression patterns, suggesting that HSPs may contribute to hardening capacity in B. tabaci.

TL;DR: This work investigates growth suppression of yeast Saccharomyces cerevisiae in the supraoptimal temperature range and hypothesizes that a temperature increase above Topt triggers both an increment in mglc and suppression of μmax, which together contribute to an upshift of Yatp/glc from the lower limit and thus compensate for the loss of the safety margin.