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Journal articles on the topic 'As poikilothermic organisms'

Author: Grafiati

Published: 7 June 2025

Last updated: 2 August 2025

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1

PRONINA, G. I., A. A. IVANOV, A. G. MANNAPOV, and O. V. SANAYA. "IMMUNE SYSTEM OF POIKILOTHERMIC AQUATIC ORGANISMS." Izvestiâ Timirâzevskoj selʹskohozâjstvennoj akademii, no. 2 (2021): 71–91. http://dx.doi.org/10.26897/0021-342x-2021-2-71-91.

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The paper shows features of the immune system of poikilothermic aquatic organisms of different taxonomic groups: crustaceans, fish, and amphibians. Defense mechanisms of crustaceans are presented by largely innate non-specific factors: external covers (including the exoskeleton), mucus, physical and chemical barriers lysozyme in the hemolymph, propanolamine system, and phagocytosis. The authors identified 4 types of cells (hemocytes) found in the circulating fluid of crayfish, depending on the morphological and functional properties: agranulocytes, progranulin,granulocytes, and transparent cel

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Woods, H. A., W. Makino, J. B. Cotner, et al. "Temperature and the chemical composition of poikilothermic organisms." Functional Ecology 17, no. 2 (2003): 237–45. http://dx.doi.org/10.1046/j.1365-2435.2003.00724.x.

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Bäumers, Miriam, Sven Klose, Christian Brüser, et al. "The auxiliary ESCRT complexes provide robustness to cold in poikilothermic organisms." Biology Open 8, no. 9 (2019): bio043422. http://dx.doi.org/10.1242/bio.043422.

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Riquelme, Nicza Fernanda Alveal. "Preliminary Antecedents on the Selected Temperature (Tsel) of Rhinella dpinulosa Wiegmann 1834 (Anura: Bufonidae) from the Andean Environments of Chile." International Journal of Zoology and Animal Biology 6, no. 2 (2023): 1–9. http://dx.doi.org/10.23880/izab-16000450.

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The ambient temperature is a decisive factor in many activities of poikilothermic organisms, since it influences the correct development of their vital processes, which implies the existence of an optimal temperature range. The present study describes selected temperatures (Tsel) of R. spinulosa in adult individuals. For this purpose, adults of this species were acclimatized at 10°C and then subjected to a thermal gradient was used in the laboratory. The mean Tsel in the studied individuals was 23.38±2.65°C, with a range from 17.73°C to 28.93°C. Future surveys are suggested to determine the ha

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Parisi, Costantino, and Giulia Guerriero. "Antioxidative Defense and Fertility Rate in the Assessment of Reprotoxicity Risk Posed by Global Warming." Antioxidants 8, no. 12 (2019): 622. http://dx.doi.org/10.3390/antiox8120622.

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The objective of this review is to briefly summarize the recent progress in studies done on the assessment of reprotoxicity risk posed by global warming for the foundation of strategic tool in ecosystem-based adaptation. The selected animal data analysis that was used in this paper focuses on antioxidative markers and fertility rate estimated over the period 2000–2019. We followed a phylogenetic methodology in order to report data on a panel of selected organisms that show dangerous effects. The oxidative damage studies related to temperature fluctuation occurring in biosentinels of different

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Paunescu, Alina, Liliana Cristina Soare, Irina Fierascu, et al. "Ecotoxicological Studies on the Action of Actara 25 WG Insecticide on Prussian Carp (Carassius gibelio) and Marsh Frog (Pelophylax ridibundus)." Toxics 10, no. 3 (2022): 114. http://dx.doi.org/10.3390/toxics10030114.

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The toxic action of the Actara 25 WG insecticide (it contains 25% thiamethoxam as an active substance) in non-lethal doses was studied in two species of aquatic organisms—the Prussian carp (Carassius gibelio) and the marsh frog (Pelophylax ridibundus)—at two thermal levels, 6–8 °C (low temperature) and 18–20 °C (room temperature), respectively. In the Prussian carp, we recorded decreases in oxygen consumption and stimulation of the respiratory rhythm, changes that were more pronounced in the case of intoxicated fish and when the species were kept at room temperature. The histopathology of the

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Popova, E. N., V. V. Yasjukevich, and I. O. Popov. "APPLICATION OF THE CARTOGRAPHIC METHOD FOR ESTIMATING DIFFERENCES IN THE APPLIED CLIMATE INDICES SAT AND SET." Problems of Ecological Monitoring and Ecosystem Modelling 30, no. 3-4 (2019): 11–27. http://dx.doi.org/10.21513/0207-2564-2019-3-11-27.

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For the territory of Russia and neighboring countries, the maps with isolines limiting geographical areas where the climate indices the sum of active temperatures (SAT) and the sum of effective temperatures (SET) exceed or do not reach the indicated values from 500°С to 3500°С in increments of 500° С at a low threshold of 10°С were constructed for the period 1981-2010. Using these maps, the differences in the areas of the territories bounded by the same isolines of SAT and SET were found. The importance of the correct use of the SAT and SET indices for determining the boundaries of the ranges

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Schlaen, Rubén Gustavo, Estefanía Mancini, Sabrina Elena Sanchez, et al. "The spliceosome assembly factor GEMIN2 attenuates the effects of temperature on alternative splicing and circadian rhythms." Proceedings of the National Academy of Sciences 112, no. 30 (2015): 9382–87. http://dx.doi.org/10.1073/pnas.1504541112.

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The mechanisms by which poikilothermic organisms ensure that biological processes are robust to temperature changes are largely unknown. Temperature compensation, the ability of circadian rhythms to maintain a relatively constant period over the broad range of temperatures resulting from seasonal fluctuations in environmental conditions, is a defining property of circadian networks. Temperature affects the alternative splicing (AS) of several clock genes in fungi, plants, and flies, but the splicing factors that modulate these effects to ensure clock accuracy throughout the year remain to be i

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Lema, Sean C., Samantha L. Bock, Morgan M. Malley, and Emma A. Elkins. "Warming waters beget smaller fish: evidence for reduced size and altered morphology in a desert fish following anthropogenic temperature change." Biology Letters 15, no. 10 (2019): 20190518. http://dx.doi.org/10.1098/rsbl.2019.0518.

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Poikilothermic organisms are predicted to show reduced body sizes as they experience warming environments under a changing global climate. Such a shrinking of size is expected under scenarios where rising temperatures increase cellular reaction rates and basal metabolic energy demands, therein requiring limited energy to be shifted from growth. Here, we provide evidence that the ecological changes associated with warming may not only lead to shrinking body size but also trigger shifts in morphology. We documented 33.4 and 39.0% declines in body mass and 7.2 and 7.6% reductions in length for ma

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Damos, Petros, and Matilda Savopoulou-Soultani. "Temperature-Driven Models for Insect Development and Vital Thermal Requirements." Psyche: A Journal of Entomology 2012 (2012): 1–13. http://dx.doi.org/10.1155/2012/123405.

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Since 1730 when Reaumut introduced the concept of heat units, many methods of calculating thermal physiological time heat have been used to simulate the phenology of poikilothermic organisms in biological and agricultural sciences. Most of these models are grounded on the concept of the “law of total effective temperatures”, which abstracts the temperature responses of a particular species, in which a specific amount of thermal units should be accumulated above a temperature threshold, to complete a certain developmental event. However, the above temperature summation rule is valid within the

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Dampc, Jan, Monika Kula-Maximenko, Mateusz Molon, and Roma Durak. "Enzymatic Defense Response of Apple Aphid Aphis pomi to Increased Temperature." Insects 11, no. 7 (2020): 436. http://dx.doi.org/10.3390/insects11070436.

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Climate change, and in particular the increase in temperature we are currently observing, can affect herbivorous insects. Aphids, as poikilothermic organisms, are directly exposed to temperature increases that influence their metabolism. Heat stress causes disturbances between the generations and the neutralization of reactive oxygen species (ROS). The aim of this work is focused on explaining how the aphid, using the example of Aphis pomi, responds to abiotic stress caused by temperature increase. The experiment was carried out under controlled conditions at three temperatures: 20, 25, and 28

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Fanelli, Elena, Alberto Troccoli, and Francesca De Luca. "Functional Variation of Two Novel Cellulases, Pv-eng-5 and Pv-eng-8, and the Heat Shock 90 Gene, Pv-hsp-90, in Pratylenchus vulnus and Their Expression in Response to Different Temperature Stress." International Journal of Molecular Sciences 20, no. 1 (2018): 107. http://dx.doi.org/10.3390/ijms20010107.

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Functional characterization of two novel endoglucanase genes, Pv-eng-5 and Pv-eng-8, of the root-lesion nematode Pratylenchus vulnus was carried out. In situ-hybridization experiments revealed that Pv-eng-8 transcript was localized in the pharyngeal glands. Silencing of Pv-eng-5 and Pv-eng-8 resulted in a significant reduction of expression level (52% and 67%, respectively). Furthermore, the silencing of Pv-eng-8 determined a reduction (41%) in nematode reproduction, suggesting that treated nematodes are much less able to process food. Surprisingly, no significant difference on reproduction ra

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Saito, Tamao, Atsushi Kato, Hiroshi Ochiai та Naoki Morita. "Temperature adaptation in Dictyostelium: role of Δ5 fatty acid desaturase". Microbiology 151, № 1 (2005): 113–19. http://dx.doi.org/10.1099/mic.0.27651-0.

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Membrane fluidity is critical for proper membrane function and is regulated in part by the proportion of unsaturated fatty acids present in membrane lipids. The proportion of these lipids in turn varies with temperature and may contribute to temperature adaptation in poikilothermic organisms. The fundamental question posed in this study was whether the unsaturation of fatty acids contributes to the ability to adapt to temperature stress in Dictyostelium. First, fatty acid composition was analysed and it was observed that the relative proportions of dienoic acids changed with temperature. To in

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Ibraimov, Abyt. "Cell thermoregulation and origin of homeothermic animals." Current Research in Biochemistry and Molecular Biology 1, no. 1 (2019): 10–13. http://dx.doi.org/10.33702/crbmb.2019.1.1.3.

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Temperature has a fundamental influence in all chemical and biochemical reactions. It influences reaction rates, equilibrium amounts, viscosity, solubility, molecular arrangements and numeric other parameters. Temperature is important for all physiological processes. Maintaining the relative constancy of the internal temperature (temperature homeostasis) is a necessary condition for normal life. Some living beings maintain temperature homeostasis in the body due to external sources of energy (poikilothermy), others due to the energy of food consumption (homeothermy). However, it is unknown the

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Huddleston, Jennifer R., John C. Zak, and Randall M. Jeter. "Antimicrobial Susceptibilities of Aeromonas spp. Isolated from Environmental Sources." Applied and Environmental Microbiology 72, no. 11 (2006): 7036–42. http://dx.doi.org/10.1128/aem.00774-06.

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ABSTRACT Aeromonas spp. are ubiquitous aquatic bacteria that cause serious infections in both poikilothermic and endothermic animals, including humans. Clinical isolates have shown an increasing incidence of antibiotic and antimicrobial drug resistance since the widespread use of antibiotics began. A total of 282 Aeromonas pure cultures were isolated from both urban and rural playa lakes in the vicinity of Lubbock, Texas, and several rivers in West Texas and New Mexico. Of these, at least 104 were subsequently confirmed to be independent isolates. The 104 isolates were identified by Biolog and

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Larios-Soriano, Ernesto, Fernando Díaz, Ana Denise Re-Araujo, et al. "Influence of temperature on respiratory metabolism during early development of Totoaba macdonaldi." Latin American Journal of Aquatic Research 51, no. 1 (2023): 109–16. http://dx.doi.org/10.3856/vol51-issue1-fulltext-2952.

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Environmental temperature can act as a positive or negative modulator of the physiology and metabolism of poikilothermic organisms. As a general rule, larvae and juveniles are more sensitive to temperature stress than adults, which represents a key factor that partly determines their development and growth in aquaculture. Therefore, this study analyzed the effect of exposure to temperatures of 21, 24, and 27°C on the respiratory metabolism (RM) of Totoaba macdonaldi in different developmental stages. For this purpose, eggs, larvae with 4, 6, 8, 14, and 22 days post-hatch (dph), and juveniles o

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Maksimovich, Kirill. "Impact factors on the population and spatial distribution of ground beetles (Coleoptera, Carabidae) in agrocenoses with different levels of intensification." АгроЭкоИнфо 2, no. 50 (2022): 42. http://dx.doi.org/10.51419/202122242.

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This paper describes the results of data analysis on species composition and population of ground beetles (Coleoptera, Carabidae) in agrocenoses of spring wheat and corn at different levels of intensification in the forest-steppe of Western Siberia in the period of 2019-2021. The research was aimed at identifying correlating factors with the abundance of ground beetle communities and assessing their significance. The data analysis methods were specified with regard to the peculiarities of the structure and nature of the initial data distribution. Analysis of the population dynamics was perform

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Namyatova, Anna A., Polina A. Dzhelali, Veronica D. Tyts, and Alexander A. Popkov. "Climate change effect on the widely distributed Palearctic plant bug species (Insecta: Heteroptera: Miridae)." PeerJ 12 (November 22, 2024): e18377. http://dx.doi.org/10.7717/peerj.18377.

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Insects are poikilothermic organisms and temperature increase usually accelerates their development rates, population and distribution area growth. Therefore, it is assumed that global warming can be beneficial for the pests and other widespread species at least in the relatively cool temperate zones. However, climate change’s effect on the widespread species in the Palearctic remains poorly studied. This work was performed on three plant bug species (Insecta: Heteroptera: Miridae), at present inhabiting Europe and Asia. Liocoris tripustulatus is known from the Western Palearctic, Lygocoris pa

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Feklistov, Pavel A., Ekaterina A. Pinaevskaya, Nikolay A. Neverov, Ivan N. Bolotov, Sergei N. Tarkhanov, and Olga N. Tyukavina. "Temperature Characteristics of Pine Stems in the Northern Taiga Subzone." Lesnoy Zhurnal (Forestry Journal), no. 3 (June 1, 2025): 195–203. https://doi.org/10.37482/0536-1036-2025-3-195-203.

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The research has been carried out in the northern taiga in pine forests of different types in the Novodvinsk and Isakogorka forestries of the Arkhangelsk forestry district. All the studied pine forests are characterized as middle-aged, pure in composition or with a small admixture of spruce and birch. The aim of the research has been to determine the temperature of the internal tissues of the xylem, since despite the fact that woody plants are poikilothermic organisms, their temperature differs from that of the air. In each forest type, 45–50 registered trees have been selected for the study.

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Payuta, A. A., and E. A. Flerova. "Impact of habitation conditions on metabolism in the muscles, liver, and gonads of different sex and age groups of bream." Regulatory Mechanisms in Biosystems 12, no. 2 (2021): 240–50. http://dx.doi.org/10.15421/022133.

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Impact of the factors of the aquatic environment is an inevitable aspect of the life of fish as poikilothermic animals and provokes responses in their organisms. The study focused on determining peculiarities in the composition of the metabolic products in the tissues of different age and sex groups of common bream Abramis brama (L.) depending on the living conditions in the water reservoirs of the Upper Volga. The fish were captured in the fattening period in summer and autumn, measured, weighed, identifying sex, maturity stage of the gonads and age. In the muscles, liver and gonads of bream,

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Bowman, Jr., Larry L., and David M. Post. "The Evolution of Life History Traits and Their Thermal Plasticity in Daphnia." Hydrobiology 2, no. 1 (2023): 55–74. http://dx.doi.org/10.3390/hydrobiology2010005.

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Few studies have explored the relative strength of ecogeographic versus lineage-specific effects on a global scale, particularly for poikilotherms, those organisms whose internal temperature varies with their environment. Here, we compile a global dataset of life history traits in Daphnia, at the species-and population-level, and use those data to parse the relative influences of lineage-specific effects and climate. We also compare the thermal response (plasticity) of life history traits and their dependence on climate, temperature, precipitation, and latitude. We found that the mode of evolu

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Silva, Laura, Giovanni Vladilo, Patricia M. Schulte, Giuseppe Murante, and Antonello Provenzale. "From climate models to planetary habitability: temperature constraints for complex life." International Journal of Astrobiology 16, no. 3 (2016): 244–65. http://dx.doi.org/10.1017/s1473550416000215.

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AbstractIn an effort to derive temperature-based criteria of habitability for multicellular life, we investigated the thermal limits of terrestrial poikilotherms, i.e. organisms whose body temperature and the functioning of all vital processes is directly affected by the ambient temperature. Multicellular poikilotherms are the most common and evolutionarily ancient form of complex life on earth. The thermal limits for the active metabolism and reproduction of multicellular poikilotherms on earth are approximately bracketed by the temperature interval 0°C ≤ T ≤ 50°C. The same interval applies t

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Dey, Manna. "The Influence of Low Temperature on the Immune System of Teleosts." British Journal of Biology Studies 1, no. 1 (2021): 1–10. http://dx.doi.org/10.32996/bjbs.2021.1.1.1.

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Due to their status as poikilothermic vertebrates, fish can experience changes in water temperature and, consequently, changes in their body temperature as a result of seasonal changes, migration, or the discharge of significant amounts of effluent into a body of water. Shifting the temperature outside of the ideal temperature range for a specific fish species might have detrimental consequences for the animal's physiology, especially its immune system. Therefore, either acute or chronic exposure to inadequate temperatures can weaken an organism's ability to protect itself against infections,

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Wu, Yangxue, Junjie Li, Huanhuan Liu, Gexia Qiao, and Xiaolei Huang. "Investigating the Impact of Climate Warming on Phenology of Aphid Pests in China Using Long-Term Historical Data." Insects 11, no. 3 (2020): 167. http://dx.doi.org/10.3390/insects11030167.

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Global climate warming has significant influence on individual development, population dynamics, and geographical distribution of many organisms, which has drawn much attention in recent years. As a large group of poikilotherms, insects whose life activities are closely linked with ambient temperature are supposed to be influenced by global warming. In order to test the consistency or difference of the effects of long-term climate warming on phytophagous insect pests in different geographical environments, this study collected historical data on the occurrence and population dynamics of three

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Wu, Gang, Ralf Baumeister, and Thomas Heimbucher. "Molecular Mechanisms of Lipid-Based Metabolic Adaptation Strategies in Response to Cold." Cells 12, no. 10 (2023): 1353. http://dx.doi.org/10.3390/cells12101353.

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Temperature changes and periods of detrimental cold occur frequently for many organisms in their natural habitats. Homeothermic animals have evolved metabolic adaptation strategies to increase mitochondrial-based energy expenditure and heat production, largely relying on fat as a fuel source. Alternatively, certain species are able to repress their metabolism during cold periods and enter a state of decreased physiological activity known as torpor. By contrast, poikilotherms, which are unable to maintain their internal temperature, predominantly increase membrane fluidity to diminish cold-rela

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Lee, Cha Young, Min Kyung Kim, and Dong-Gun Kim. "Ecological Responses of Nannophya koreana (Odonata: Libellulidae) to Temperature: Following Converse Bergmann’s Rule." Biology 11, no. 6 (2022): 830. http://dx.doi.org/10.3390/biology11060830.

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Ecological rules such as Bergmann’s rule and the temperature–size rule state that body-size decline is a universal response to warm temperatures in both homeotherms and poikilotherms. In the present study, we investigated the biological responses of Nannophya koreana, an endangered dragonfly species in Korea, by comparing body size in two habitats with large differences in water temperature, Mungyong-si (MG, terraced paddy fields) and Muui-do (MU, a mountainous wetland). To conserve the dragonfly populations, the collected larvae were photographed and released, and their head widths and body l

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Wen, Xin, Sen Wang, John G. Duman, et al. "Antifreeze proteins govern the precipitation of trehalose in a freezing-avoiding insect at low temperature." Proceedings of the National Academy of Sciences 113, no. 24 (2016): 6683–88. http://dx.doi.org/10.1073/pnas.1601519113.

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The remarkable adaptive strategies of insects to extreme environments are linked to the biochemical compounds in their body fluids. Trehalose, a versatile sugar molecule, can accumulate to high levels in freeze-tolerant and freeze-avoiding insects, functioning as a cryoprotectant and a supercooling agent. Antifreeze proteins (AFPs), known to protect organisms from freezing by lowering the freezing temperature and deferring the growth of ice, are present at high levels in some freeze-avoiding insects in winter, and yet, paradoxically are found in some freeze-tolerant insects. Here, we report a

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Monteiro, João N., Juan Bueno-Pardo, Miguel Pinto, Miguel A. Pardal, Filipe Martinho, and Francisco Leitão. "Implications of Warming on the Morphometric and Reproductive Traits of the Green Crab, Carcinus maenas." Fishes 8, no. 10 (2023): 485. http://dx.doi.org/10.3390/fishes8100485.

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Understanding the relationship between environmental temperature and the biological traits of organisms is fundamental to inferring the potential impacts of climate change. In the case of marine poikilotherm species, seawater temperature is one of the main driving forces of biological processes, with consequences at higher levels of organization such as population and ecosystem. In this study, we analysed differences in maximum carapace width (CWmax), size at maturation, relative size at maturation, and duration of the reproductive season for the green crab (Carcinus maenas) along a temperatur

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Ahliddin, Raxmanov Xabibulloevich, Dinora Otabek qizi Jumaboyeva, and Abdusalom Abdumavlon o'g'li Abduroziqov. "APHID PLANT INTERACTIONS UNDER HIGHER TEMPERATURES: SHIFTS." Role of agriculture and medicine in science va O'zbekiston Agrar fani xabarnomasi Maxsus son, no. 1/1(19) 2025 (2025): 282–84. https://doi.org/10.5281/zenodo.15001566.

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<strong>APHID PLANT INTERACTIONS UNDER HIGHER TEMPERATURES: SHIFTS</strong> Assistant of the Department of Plant Protection and Quarantine <strong>Ahliddin Raxmanov Xabibulloevich</strong> <strong>Jumaboyeva Dinora Otabek qizi</strong> <strong>Abduroziqov Abdusalom Abdumavlon o‘g‘li</strong> Tashkent State Agrarian University a.raxmonov@tdau.uz

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Mironova, Ekaterina, Mikhail Gopko, Anna Pasternak, Viktor Mikheev, and Jouni Taskinen. "Allee effect in a manipulative parasite within poikilothermic host under temperature change." Parasitology, September 9, 2021, 1–9. http://dx.doi.org/10.1017/s0031182021001529.

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Abstract Temperature and intraspecific competition are important factors influencing the growth of all organisms, including parasites. The temperature increase is suggested to stimulate the development of parasites within poikilothermic hosts. However, at high parasite densities, this effect could be diminished, due to stronger intraspecific competition. Our study, for the first time, addressed the joint effects of warming and parasite abundances on parasite growth in poikilothermic hosts. The growth of the common fish parasite larvae (trematode Diplostomum pseudospathaceum) within the rainbow

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Rossini, Luca, Mario Contarini, and Stefano Speranza. "A novel version of the Von Foerster equation to describe poikilothermic organisms including physiological age and reproduction rate." Ricerche di Matematica, February 10, 2020. http://dx.doi.org/10.1007/s11587-020-00489-6.

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Séon, Nicolas, Peggy Vincent, Lene Liebe Delsett, et al. "Reassessment of body temperature and thermoregulation strategies in Mesozoic marine reptiles." Paleobiology, April 16, 2025, 1–21. https://doi.org/10.1017/pab.2025.2.

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Abstract Ichthyosauria, Plesiosauria, and Metriorhynchidae were apex predators in Mesozoic oceanic trophic networks. Previous stable oxygen isotope studies suggested that several taxa belonging to these groups were endothermic and that some of them were homeothermic organisms. However, these conclusions remain contentious owing to the associated uncertainties regarding the δ18O value and oxygen isotope fractionation relative to environmental seawater. Here, we present new bioapatite phosphate δ18O values (δ18Op) of Ichthyosauria, Plesiosauria, and Metriorhynchidae (Middle Jurassic to Early Cre

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Kokou, Fotini, Goor Sasson, Tali Nitzan, et al. "Host genetic selection for cold tolerance shapes microbiome composition and modulates its response to temperature." eLife 7 (November 20, 2018). http://dx.doi.org/10.7554/elife.36398.

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The hologenome concept proposes that microbes and their host organism are an independent unit of selection. Motivated by this concept, we hypothesized that thermal acclimation in poikilothermic organisms, owing to their inability to maintain their body temperature, is connected to their microbiome composition. To test this hypothesis, we used a unique experimental setup with a transgenerational selective breeding scheme for cold tolerance in tropical tilapias. We tested the effects of the selection on the gut microbiome and on host transcriptomic response. Interestingly, we found that host gen

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Vakkayil, Kavya Leo, and Thorsten Hoppe. "Temperature-Dependent Regulation of Proteostasis and Longevity." Frontiers in Aging 3 (March 24, 2022). http://dx.doi.org/10.3389/fragi.2022.853588.

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Temperature is an important environmental condition that determines the physiology and behavior of all organisms. Animals use different response strategies to adapt and survive fluctuations in ambient temperature. The hermaphrodite Caenorhabditis elegans has a well-studied neuronal network consisting of 302 neurons. The bilateral AFD neurons are the primary thermosensory neurons in the nematode. In addition to regulating thermosensitivity, AFD neurons also coordinate cellular stress responses through systemic mechanisms involving neuroendocrine signaling. Recent studies have examined the effec

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Lusiastuti, Angela Mariana, Achmad Suhermanto, Bernadetta Rina Hastilestari, et al. "Impact of temperature on the virulence of Streptococcus agalactiae in Indonesian aquaculture: A better vaccine design is required." Veterinary World, March 2024, 682–89. http://dx.doi.org/10.14202/vetworld.2024.682-689.

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Due to their poikilothermic nature, fish are very sensitive to changes in temperature. Due to climate change, the average global temperature has increased by 1.5°C in the last century, which may have caused an increase in farmed fish mortality recently. Predictions using the model estimate that a 1°C increase in temperature could cause 3%-4% and 4%-6% mortality due to infectious diseases in organisms living in warm and temperate waters, respectively. There is a need to determine whether there is a relationship between increasing environmental temperature and disease virulence. This review exam

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Lei, Gaoke, Jieling Huang, Huiling Zhou, et al. "Polygenic adaptation of a cosmopolitan pest to a novel thermal environment." Insect Molecular Biology, March 15, 2024. http://dx.doi.org/10.1111/imb.12908.

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AbstractThe fluctuation in temperature poses a significant challenge for poikilothermic organisms, notably insects, particularly in the context of changing climatic conditions. In insects, temperature adaptation has been driven by polygenes. In addition to genes that directly affect traits (core genes), other genes (peripheral genes) may also play a role in insect temperature adaptation. This study focuses on two peripheral genes, the GRIP and coiled‐coil domain containing 2 (GCC2) and karyopherin subunit beta 1 (KPNB1). These genes are differentially expressed at different temperatures in the

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Miah, Muhammad Abdul Hamid. "Effect of climate change on arthropod and impact on crop production." Bangladesh Journal of Entomology 31, no. 2 (2023). https://doi.org/10.63759/bje.31.2.10.

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Effect of climate change is not confined to arthropod pests and their outbreaks; beneficial arthropods are also affected. Therefore, an attempt has been made to include effect of global warming on four beneficial arthropods viz., insects, mites, ticks and, spiders. Global warming is a great concern throughout the world. The ill effects of global warming like change in climate, temperature, rainfall, humidity, level of carbon dioxide have been found to have both positive and negative effects on insects, which in turn reduces the effectiveness of crop protection measures. Effect on human animal

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Tanner, Richelle L., Rauri C. K. Bowie, Cynthia Y. Wang‐Claypool, and Jonathon H. Stillman. "Variation in thermal tolerance plasticity and the costs of heat exposure in the estuarine sea hare, Phyllaplysia taylori." Ecosphere 16, no. 2 (2025). https://doi.org/10.1002/ecs2.70191.

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AbstractClimate change is increasing average temperatures and the frequency and intensity of thermal extremes in coastal marine environments. Organisms in coastal marine habitats are accustomed to environmental fluctuations and possess physiological plasticity that may be advantageous in response to increased occurrence of extremes. To examine whether such plasticity is locally adapted to environmental conditions, we investigated the relationship between genetic diversity and thermal tolerance plasticity in 11 populations of the direct‐developing intertidal sea hare, Phyllaplysia taylori, on t

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Zhao, Chunlin, Jianping Jiang, Feng Xie, Cheng Li, and Tian Zhao. "Assessment of Amphibians Vulnerability to Climate Change in China." Frontiers in Ecology and Evolution 10 (January 27, 2022). http://dx.doi.org/10.3389/fevo.2022.826910.

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Global climate change is considered to be one of the main threats to organisms. As poikilothermic animals, amphibians are in particular sensitive because they cannot adapt to the dramatic climate change through active physiological regulation. Using 104 representative species, the present study conducted an assessment of amphibians vulnerability to climate change in China through the combination of two approaches. Specifically, 18 vulnerability criteria belonging to five categories (i.e., thermal tolerance, individual reproductive, population diffusion and diversity, food and habitat, and clim

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Sukmansky, Oleg. "Gaseous signaling molecules (GSM): evolution, biological role and involvement in the pathogenesis of diseases (literature review)." JOURNAL OF THE NATIONAL ACADEMY OF MEDICAL SCIENCES OF UKRAINE, December 18, 2019, 373–82. http://dx.doi.org/10.37621/jnamsu-2019-4-373-382.

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Data, presented in this review, show that gaseous signaling molecules are a common biological system of bioregulators, which attribute to main kingdoms of life – animals, plants and bacteria. They confirm the similarity of their origin and developing by evolution. Gaseous signaling molecules (gasotransmitters) were first discovered and mostly researched in humans and mammals. Today are known gaseous signaling molecules such as: nitric oxide and reactive oxygen species, carbon monoxide, hydrogen sulfide, polysulfides and sulfur dioxide. It is proved that there are more gaseous signaling molecul

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Wang, Xuemin, Yixin Wang, Yanlin Wang, Kenneth B. Storey, and Muyan Chen. "Characterization and expression profile of transient receptor potential channels in sea cucumber Apostichopus japonicus." Frontiers in Marine Science 10 (April 11, 2023). http://dx.doi.org/10.3389/fmars.2023.1142982.

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BackgroundIn the past few decades, heat waves and seasonal variation linked with global warming are causing frequent fluctuations of water temperature in aquatic environments, resulting in further challenges for marine organisms. As a poikilothermic marine animal and a temperate species, sea cucumber A. japonicus is also very sensitive to temperature variation and shows a limited ability to adapt to environmental temperature changes. However, the molecular mechanisms by which A. japonicus perceives signals from such a diverse environment including the trigger of aestivation still remain unclea

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Canali, Giulia, Pilar Hurtado, Sara Gariglio, Rodrigo Rocha de Oliveira, Cristina Malegori, and Paolo Giordani. "How Thermal Patterns Change During Dehydration in Non‐Vascular Epiphytic Communities." Ecology and Evolution 15, no. 7 (2025). https://doi.org/10.1002/ece3.71756.

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ABSTRACTLichens and bryophytes, as poikilohydric and poikilothermic organisms, reach equilibrium with their surroundings. However, non‐vascular epiphytic communities contribute to ecosystem functions, such as water and energy balance, by interacting with the environment through water and heat exchange at the substrate‐atmosphere interface. We hypothesized that variations in water content during dehydration cycles could alter thermal patterns, leading to greater thermal heterogeneity associated with increased life‐form diversity. We captured infrared images of eight bark sample categories repre

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Chowański, S., J. Lubawy, E. Paluch-Lubawa, M. Gołębiowski, H. Colinet, and M. Słocińska. "Metabolism dynamics in tropical cockroach during a cold-induced recovery period." Biological Research 58, no. 1 (2025). https://doi.org/10.1186/s40659-025-00621-6.

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Abstract Background Insects are poikilothermic organisms, meaning their body heat comes entirely from their surroundings. This influences their metabolism, growth, development, and behavior. Cold tolerance is considered an important factor in determining the geographic distribution of insects. The tropical cockroach Gromphadorhina coquereliana is capable of surviving exposure to cold. To determine the dynamics of metabolic adjustments occurring in the insect body under cold stress, we subjected the cockroach to 4°C for 3 h, followed by recovery periods of 3, 8, and 24 h. We then determined the

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"Cold adaptation in marine organisms." Philosophical Transactions of the Royal Society of London. B, Biological Sciences 326, no. 1237 (1990): 655–67. http://dx.doi.org/10.1098/rstb.1990.0037.

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Animals from polar seas exhibit numerous so called resistance adaptations that serve to maintain homeostasis at low temperature and prevent lethal freezing injury. Specialization to temperatures at or below 0 °C is associated with an inability to survive at temperatures above 3-8 °C. Polar fish synthesize various types of glycoproteins or peptides to lower the freezing point of most extracellular fluid compartments in a non-colligative manner. Antifreeze production is seasonal in boreal species and is often initiated by environmental cues other than low temperature, particularly short day leng

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Pecina, Lukáš, Ivan Rurik, and Peter Vďačný. "Macroevolutionary trends and diversification dynamics in the hindgut order Clevelandellida (Ciliophora, Armophorea)." Zoologica Scripta, October 24, 2024. http://dx.doi.org/10.1111/zsc.12701.

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AbstractClevelandellids are highly diversified and widespread unicellular eukaryotic organisms inhabiting the digestive tract of a broad spectrum of invertebrates and vertebrates. Time‐calibrated phylogeny of clevelandellids was built to reconstruct their ancestral hosts using stochastic mapping, investigate their coevolution with animal hosts using an event‐based tree reconciliation approach and examine the impact of hosts on their diversification dynamics and molecular evolution using the MuSSE method and phylogenetic regression. The progenitor of the analysed representatives of the order Cl

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Malik, Hannan R., Gabriel E. Bertolesi, and Sarah McFarlane. "TRPM8 thermosensation in poikilotherms mediates both skin colour and locomotor performance responses to cold temperature." Communications Biology 6, no. 1 (2023). http://dx.doi.org/10.1038/s42003-023-04489-8.

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AbstractThermoregulation is a homeostatic process to maintain an organism’s internal temperature within a physiological range compatible with life. In poikilotherms, body temperature fluctuates with that of the environment, with both physiological and behavioral responses employed to modify body temperature. Changing skin colour/reflectance and locomotor activity are both well-recognized temperature regulatory mechanisms, but little is known of the participating thermosensor/s. We find that Xenopus laevis tadpoles put in the cold exhibit a temperature-dependent, systemic, and rapid melanosome

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Liu, Tian, Ruojiao Li, Liangjie Liu, et al. "The Effect of Temperature on Gonadal Sex Differentiation of Yesso Scallop Patinopecten yessoensis." Frontiers in Cell and Developmental Biology 9 (January 31, 2022). http://dx.doi.org/10.3389/fcell.2021.803046.

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Many marine organisms are generally poikilotherms, making seawater temperature one of the most important environmental factors affecting gonadal sex differentiation. Mollusca is the second-largest animal phylum with diverse reproductive systems, but studies on the impact of temperature on sex differentiation are limited to a few sequential hermaphrodites. By combining morphological and molecular analyses, we investigated the effect of temperature on gonadal sex differentiation of a commercially important gonochoristic scallop Patinopecten yessoensis in the field and under laboratory conditions

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Custer, Christopher A., Joshua S. North, Erin M. Schliep, Michael R. Verhoeven, Gretchen J. A. Hansen, and Tyler Wagner. "Predicting responses to climate change using a joint species, spatially dependent physiologically guided abundance model." Ecology, June 20, 2024. http://dx.doi.org/10.1002/ecy.4362.

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AbstractPredicting the effects of warming temperatures on the abundance and distribution of organisms under future climate scenarios often requires extrapolating species–environment correlations to climatic conditions not currently experienced by a species, which can result in unrealistic predictions. For poikilotherms, incorporating species' thermal physiology to inform extrapolations under novel thermal conditions can result in more realistic predictions. Furthermore, models that incorporate species and spatial dependencies may improve predictions by capturing correlations present in ecologi

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Carossino, Mariano, Javier G. Nevarez, Kanako Sakaguchi, et al. "An outbreak of systemic chlamydiosis in farmed American alligators (Alligator mississippiensis)." Veterinary Pathology, May 3, 2022, 030098582210952. http://dx.doi.org/10.1177/03009858221095269.

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Chlamydia spp are reported to causes systemic disease in a variety of hosts worldwide including few reports in crocodilians. Disease presentations vary from asymptomatic to fulminant disease, some of which are zoonotic. The aim of this study was to describe the pathological, immunohistochemical, and molecular findings associated with the occurrence of a previously unreported Chlamydia sp infection causing a major mortality event in farmed American alligators ( Alligator mississippiensis). The outbreak presented with sudden death in juvenile alligators mainly associated with necrotizing hepatit

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Fakhari, Milad, André St-Hilaire, and Richard Martel. "Thermal Refuge Modeling: A Short Review." Environmental Reviews, July 29, 2025. https://doi.org/10.1139/er-2025-0106.

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Thermal refuges in river systems play a vital role in safeguarding aquatic organisms, particularly cold-water poikilotherms, during extreme temperature events. These refuges are characterized by localized temperature anomalies under the influence of different natural meteorological, hydrological and geomorphological factors or human activities. The identification, prediction and protection of thermal refuges have gained importance due to the rising impact of climate change and anthropogenic activities on river temperatures. Models have become increasingly used for addressing related concerns a

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