journal
MENU ▼
Read by QxMD icon Read
search

Journal of Thermal Biology

journal
https://www.readbyqxmd.com/read/28689727/temperature-stress-and-insect-immunity
#1
REVIEW
Iwona Wojda
This mini-review summarizes the recent knowledge concerning the role of temperature in the immune response of insects. The heat-shock is described as a common phenomenon in both homotherms and poikilotherms, and the role of heat-shock proteins in innate immunity is recalled taking into account its evolutionary aspects. Similar to homothermic animals, which show a febrile reaction to infection, poikilothermic invertebrates such as insects develop behavioural fever as part of their immune response. It can be elicited not only by the presence of the pathogen itself but also by injection of immune stimulators i...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689726/physical-mechanism-or-evolutionary-trade-off-factors-dictating-the-relationship-between-metabolic-rate-and-ambient-temperature-in-carabid-beetles
#2
Agnieszka Gudowska, Bartosz W Schramm, Marcin Czarnoleski, Jan Kozłowski, Ulf Bauchinger
The tight association between ambient temperature (T) and metabolic rate (MR) is a common occurrence in ectotherms, but the determinants of this association are not fully understood. This study examined whether the relationship between MR and T is the same among individuals, as predicted by the Universal Temperature Dependence hypothesis, or whether this relationship differs between them. We used flow-through respirometry to measure standard MR and to determine gas exchange patterns for 111 individuals of three Carabidae species which differ in size (Abax ovalis, Carabus linnei and C...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689725/phylogenetic-analysis-of-the-allometry-of-metabolic-rate-and-mitochondrial-basal-proton-leak
#3
Elias T Polymeropoulos, R Oelkrug, C R White, M Jastroch
The mitochondrial basal proton leak (MBPL) significantly contributes to high body temperatures (Tb) and basal metabolic rates (BMR) in endotherms. In endotherms at a given body mass (M), liver MBPL is higher than in ectotherms, supporting the notion that MBPL may partly explain the evolutionary increase in metabolic rate (MR), fostering endothermy. Here, we re-addressed this assumption by performing a phylogenetic analysis comparing all available liver MBPL data for ecto- and endotherms. While MBPL within endotherms negatively scales with M and BMR as shown previously, MBPL of ectotherms does not scale allometrically with M...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689724/thermal-biology-in-two-syntopic-lizards-phymaturus-extrilidus-and-liolaemus-parvus-in-the-puna-region-of-argentina
#4
Rodrigo Gómez Alés, Juan Carlos Acosta, Alejandro Laspiur
Body temperature is the most important ecophysiological variable affecting reptiles' life history. Moreover, thermoregulation in ectotherms implies a struggle to reach preferred temperatures in natural conditions due to the influence of biotic and abiotic factors. Our objective was to evaluate and compare the thermal biology of two syntopic species, Phymaturus extrilidus and Liolaemus parvus, in the Puna region of San Juan, Argentina. We determined body temperature (Tb), micro-environmental temperatures (Ta and Ts) and operative temperatures (Te) in the field...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689723/methods-and-pitfalls-of-measuring-thermal-preference-and-tolerance-in-lizards
#5
REVIEW
Agustín Camacho, Travis W Rusch
Understanding methodological and biological sources of bias during the measurement of thermal parameters is essential for the advancement of thermal biology. For more than a century, studies on lizards have deepened our understanding of thermal ecophysiology, employing multiple methods to measure thermal preferences and tolerances. We reviewed 129 articles concerned with measuring preferred body temperature (PBT), voluntary thermal tolerance, and critical temperatures of lizards to offer: a) an overview of the methods used to measure and report these parameters, b) a summary of the methodological and biological factors affecting thermal preference and tolerance, c) recommendations to avoid identified pitfalls, and d) directions for continued progress in our application and understanding of these thermal parameters...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689722/genetic-components-in-a-thermal-developmental-plasticity-of-the-beetle-tribolium-castaneum
#6
Marcin Czarnoleski, Paulina Kramarz, Dariusz Małek, Szymon M Drobniak
Low developmental temperatures cause ectotherms to retard growth, postpone maturation, and emerge at either larger or smaller adult size. In this study, we explored how these thermal responses evolved, focusing on their genetic basis. We applied a full diallel breeding design on inbred lines of the flour beetle, Tribolium castaneum. To assess the proportional contributions of genetic and non-genetic effects, each genotype, a unique combination of parental haplotypes, was reared from an egg to imago at five developmental temperatures...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689721/studying-the-evolutionary-significance-of-thermal-adaptation-in-ectotherms-the-diversification-of-amphibians-energetics
#7
Roberto F Nespolo, Julio Figueroa, Jaiber J Solano-Iguaran
A fundamental problem in evolutionary biology is the understanding of the factors that promote or constrain adaptive evolution, and assessing the role of natural selection in this process. Here, comparative phylogenetics, that is, using phylogenetic information and traits to infer evolutionary processes has been a major paradigm . In this study, we discuss Ornstein-Uhlenbeck models (OU) in the context of thermal adaptation in ectotherms. We specifically applied this approach to study amphibians's evolution and energy metabolism...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689720/thermal-acclimation-in-american-alligators-effects-of-temperature-regime-on-growth-rate-mitochondrial-function-and-membrane-composition
#8
Edwin R Price, Tushar S Sirsat, Sarah K G Sirsat, Gurdeep Kang, Jantana Keereetaweep, Mina Aziz, Kent D Chapman, Edward M Dzialowski
We investigated the ability of juvenile American alligators (Alligator mississippiensis) to acclimate to temperature with respect to growth rate. We hypothesized that alligators would acclimate to cold temperature by increasing the metabolic capacity of skeletal muscles and the heart. Additionally, we hypothesized that lipid membranes in the thigh muscle and liver would respond to low temperature, either to maintain fluidity (via increased unsaturation) or to maintain enzyme reaction rates (via increased docosahexaenoic acid)...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689719/the-thermal-environment-of-the-nest-affects-body-and-cell-size-in-the-solitary-red-mason-bee-osmia-bicornis-l
#9
Justyna Kierat, Hajnalka Szentgyörgyi, Marcin Czarnoleski, Michał Woyciechowski
Many ectotherms grow larger at lower temperatures than at higher temperatures. This pattern, known as the temperature-size rule, is often accompanied by plastic changes in cell size, which can mechanistically explain the thermal dependence of body size. However, the theory predicts that thermal plasticity in cell size has adaptive value for ectotherms because there are different optimal cell-membrane-to-cell-volume ratios at different temperatures. At high temperatures, the demand for oxygen is high; therefore, a large membrane surface of small cells is beneficial because it allows high rates of oxygen transport into the cell...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689718/long-term-and-acute-effects-of-temperature-and-oxygen-on-metabolism-food-intake-growth-and-heat-tolerance-in-a-freshwater-gastropod
#10
K Natan Hoefnagel, Wilco C E P Verberk
Temperature affects the physiology and life-history of ectothermic animals, often increasing metabolic rate and decreasing body size. Oxygen limitation has been put forward as a mechanism to explain thermal responses of body size and the ability to survive stress. However the time-scales involved in growth performance and heat tolerance differ radically. In order to increase our understanding of oxygen and temperature effects on body size and heat tolerance and the time scale involved, we reared Lymnaea stagnalis under six combinations of temperature and oxygen tension from hatching up to an age of 300 days and recorded shell length during this whole period...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689717/compensation-of-thermal-constraints-along-a-natural-environmental-gradient-in-a-malagasy-iguanid-lizard-oplurus-quadrimaculatus
#11
Ole Theisinger, W Berg, K H Dausmann
Physiological or behavioural adjustments are a prerequisite for ectotherms to cope with different thermal environments. One of the world's steepest environmental gradients in temperature and precipitation can be found in southeastern Madagascar. This unique gradient allowed us to study the compensation of thermal constraints in the heliothermic lizard Oplurus quadrimaculatus on a very small geographic scale. The lizard occurs from hot spiny forest to intermediate gallery and transitional forest to cooler rain forest and we investigated whether these habitat differences are compensated behaviourally or physiologically...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689716/exploring-physiological-plasticity-and-local-thermal-adaptation-in-an-intertidal-crab-along-a-latitudinal-cline
#12
Juan Diego Gaitán-Espitia, Leonardo D Bacigalupe, Tania Opitz, Nelson A Lagos, Sebastián Osores, Marco A Lardies
Intertidal organisms have evolved physiological mechanisms that enable them to maintain performance and survive during periods of severe environmental stress with temperatures close to their tolerance limits. The level of these adaptive responses in thermal physiology can vary among populations of broadly distributed species depending on their particular environmental context and genetic backgrounds. Here we examined thermal performances and reaction norms for metabolic rate (MR) and heart rate (HR) of seven populations of the porcelanid crab Petrolisthes violaceus from markedly different thermal environments across the latitudinal gradient of ~3000km...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689715/exploration-of-low-temperature-microrna-function-in-an-anoxia-tolerant-vertebrate-ectotherm-the-red-eared-slider-turtle-trachemys-scripta-elegans
#13
Kyle K Biggar, Kenneth B Storey
As a model for vertebrate long-term survival in oxygen-restricted environments, the red-eared slider turtle (Trachemys scripta elegans) can adapt at the biochemical level to survive in oxygen-free (anoxic) cold water (<10°C). This impressive ability is enabled through a coordinated suppression of energy-expensive, non-essential, cell processes. This study explored the anoxia-responsive expression of several microRNA species (miR-1a, -133, -17, -107, -148a, -21, -103, -210, -20a, -365 and -29b) in adult turtles exposed to 5h and 20h anoxia (at 5±1°C)...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689714/thermal-stress-in-danio-rerio-a-link-between-temperature-light-thermo-trp-channels-and-clock-genes
#14
Rodrigo Jerônimo, Maria Nathália Moraes, Leonardo Vinícius Monteiro de Assis, Bruno César Ramos, Thainá Rocha, Ana Maria de Lauro Castrucci
It is believed that the biological systems perceiving temperature and light daily cycles were subjected to the simultaneous selective pressures, which resulted in their co-evolutionary association. We investigated the influence of 1h 33°C heat shock on the expression of clock and heat shock protein genes, as well as the role of the thermo-TRP channel, TRPV1, in ZEM-2S cells of the teleost Danio rerio, in constant dark (DD) or light-dark cycles (LD). After heat shock, we observed an acute increase of hsp90 aa1 levels in both DD and LD conditions...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689713/antioxidant-defense-system-and-oxidative-status-in-antarctic-fishes-the-sluggish-rockcod-notothenia-coriiceps-versus-the-active-marbled-notothen-notothenia-rossii
#15
Roberta Daniele Klein, Carlos Eduardo Rosa, Elton Pinto Colares, Ricardo Berteaux Robaldo, Pablo Elias Martinez, Adalto Bianchini
Adaptive responses of antioxidant defense systems (ADS) to changes in increased levels of activity are critical, especially in Antarctic fishes. The benthopelagic marbled notothen (Notothenia rossii) shows higher spontaneous activity than the benthonic and sluggish rockcod (N. coriiceps). Therefore, we hypothesize that species-related responses of ADS would occur to counteract different rates of reactive oxygen species formation in these two Antarctic fish. Here we evaluated ADS and oxidative damage in tissues (brain, gills, liver and white muscle) of the two Antarctic fish...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689712/effects-of-increasing-temperature-on-antioxidant-defense-system-and-oxidative-stress-parameters-in-the-antarctic-fish-notothenia-coriiceps-and-notothenia-rossii
#16
Roberta Daniele Klein, Vinicius Dias Borges, Carlos Eduardo Rosa, Elton Pinto Colares, Ricardo Berteaux Robaldo, Pablo Elias Martinez, Adalto Bianchini
Antioxidant defense system (ADS) and oxidative stress parameters were evaluated in the Antarctic fish Notothenia rossii and N. coriiceps exposed to increasing temperature. Acclimated fish were kept at 0°C or exposed to 4°C for 1day (N. rossii) or to 2 and 4°C for 1 and 6 days (N. coriiceps). Measurements were assessed in brain, gills, liver, white muscle and erythrocytes. Parameters analyzed included antioxidant capacity against peroxyl radicals (ACAP); reduced glutathione (GSH) and metallothionein-like proteins (MTLP) concentration; superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione-S-transferase (GST) and glutamate-cysteine ligase (GCL) activity; lipid peroxidation (LPO) level and protein carbonyl (PC) concentration...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689711/differential-expression-of-stress-candidate-genes-for-thermal-tolerance-in-the-sea-urchin-loxechinus-albus
#17
Jonathan Vergara-Amado, Andrea X Silva, Catalina Manzi, Roberto F Nespolo, Leyla Cárdenas
Marine ectotherms inhabiting intertidal and shallow subtidal environments are continuously exposed to diurnal tidal cycles and seasonal variability in temperature. These organisms have adaptive mechanisms to maintain cellular homeostasis, irrespective of thermal environmental variation. In this study, we describe the molecular responses to thermal stress in the edible sea urchin Loxechinus albus. In particular, we determined the differential expression of a set of molecular markers that have been identified as targets of stress-related responses...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28689710/colder-is-better-the-differential-effects-of-thermal-acclimation-on-life-history-parameters-in-a-parasitoid-fly
#18
Jorge Zamorano, Francisco Bozinovic, Claudio Veloso
In this article, we assessed the effect of the rearing temperature on life history traits of the poorly known fly Phasmovora phasmophagae (Diptera: Tachinidae), a parasitoid of Agathemera crassa (Phasmatodea: Agathemeridae) in order to: i) test the effect of ambient temperature on life history traits and ii) assess the potential trade-off between reproduction and survival. Parasitoids were obtained from a population of hosts located in the Andes range of central Chile. Upon emergence from the host parasitoids were randomly allocated to three thermal treatments (15°C, 22...
August 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28558940/hyperthermia-enhances-bortezomib-induced-apoptosis-in-human-white-blood-cancer-cells
#19
Timur Saliev, Loreto B Feril, Dinara Begimbetova, Dinara Baiskhanova, Anton Klodzinskyi, Xeniya Bobrova, Rassulbek Aipov, Tolkyn Baltabayeva, Katsuro Tachibana
At present, the current therapeutic strategy for apoptosis induction mainly relies on the administration of pharmacological apoptotic modulators. Apart from that, apoptosis can be induced by various external stimuli such as hyperthermia, ionizing radiation, and electric fields. Despite advantages, both physical and pharmacological approaches bear some limitations as well. The rationale of this study was to overcome the limitations by combining hyperthermia and apoptotic modulator 'bortezomib' (Velcade). Two types of human blood cancer cell lines were utilized: human leukemic monocyte lymphoma cell U937 line and peripheral blood mononuclear cells (PMBCs) derived from the patient diagnosed with acute myeloid leukemia...
July 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28558939/the-humboldt-penguin-spheniscus-humboldti-rete-tibiotarsale-a-supreme-biological-heat-exchanger
#20
Shaked Kazas, Moran Benelly, Saar Golan
Humans are unable to survive low temperature environments without custom designed clothing and support systems. In contrast, certain penguin species inhabit extremely cold climates without losing substantial energy to self-heating (emperor penguins ambient temperature plummets to as low as -45°C). Penguins accomplish this task by relying on distinct anatomical, physiological and behavioral adaptations. One such adaptation is a blood vessel heat exchanger called the 'Rete Tibiotarsale' - an intermingled network of arteries and veins found in penguins' legs...
July 2017: Journal of Thermal Biology
journal
journal
26579
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"