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Journal articles on the topic 'Thermoregulation feeding behaviour'

Author: Grafiati

Published: 7 April 2023

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1

Bergen, R. D., K. S. Schwartzkopf-Genswein, T. A. McAllister, and A. D. Kennedy. "Effects of feeding time on behaviour, thermoregulation and growth of steers in winter." Canadian Journal of Animal Science 88, no. 3 (2008): 369–79. http://dx.doi.org/10.4141/cjas07094.

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Two trials were conducted to determine whether the effects of morning (1000) vs. evening (2000) feed delivery on the frequency and duration of feedbunk visits, thermoregulatory physiology and growth performance of feedlot steers were modified by ambient winter temperatures. Night-time feeding behaviours were more pronounced for evening-fed than for morning-fed cattle during both the forage-based backgrounding and concentrate-based finishing periods. Evening feeding also led to increased core body temperatures during the coldest part of the day during the backgrounding period but had little eff

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Fourie, L. J., I. G. Horak, and M. R. Perrin. "Activity patterns and feeding behaviour of hyrax (Procavia capensis) in the Mountain Zebra National Park." Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie 6, no. 3 (1987): 118–22. http://dx.doi.org/10.4102/satnt.v6i3.955.

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The activity patterns of marked hyrax in the Mountain Zebra National Park were quantified by direct observations. Extended periods are spent on basking during winter (6,8 h) and summer (5,3 h) respectively. At least 80 % of each day is spent in an inactive phase. The more extended time spent on movement and time spent within refuges during summer (0,4 and 2,7 h), compared to winter (0,2 and 0,9 h), can possibly be interpreted in terms of behavioural thermoregulation. Distinct differences between the feeding behaviour of juveniles (< 6 months) and older hyrax were observed. Foraging of juven

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Deeming, D. C. "Effect of Winter Climatic Conditions on the Behaviour of Adult Ostriches (Struthio Camelus) on a British Farm." Animal Welfare 7, no. 3 (1998): 307–15. http://dx.doi.org/10.1017/s096272860002073x.

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AbstractOstrich welfare on farms of is great importance, particularly because little is known about appropriate husbandry conditions for these birds in a northern European environment. Rain has been shown to influence the pattern of behaviour during the spring months. This study examined the effects of four different climatic conditions (raining, dull but overcast, bright but overcast and sunny) on the behaviour of ostriches during the winter. Compared with dry conditions, there was a significantly higher rate of sitting during rainy periods — apparently at the expense of foraging (from pastur

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Siefert, Paul, Nastasya Buling, and Bernd Grünewald. "Honey bee behaviours within the hive: Insights from long-term video analysis." PLOS ONE 16, no. 3 (2021): e0247323. http://dx.doi.org/10.1371/journal.pone.0247323.

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The combined behaviours of individuals within insect societies determine the survival and development of the colony. For the western honey bee (Apis mellifera), individual behaviours include nest building, foraging, storing and ripening food, nursing the brood, temperature regulation, hygiene and defence. However, the various behaviours inside the colony, especially within the cells, are hidden from sight, and until recently, were primarily described through texts and line drawings, which lack the dynamics of moving images. In this study, we provide a comprehensive source of online video mater

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Björnsson, Björn. "Thermoregulatory behaviour in cod: Is the thermal preference in free-ranging adult Atlantic cod affected by food abundance?" Canadian Journal of Fisheries and Aquatic Sciences 76, no. 9 (2019): 1515–27. http://dx.doi.org/10.1139/cjfas-2018-0305.

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This study supports the hypothesis that well-fed cod (Gadus morhua) seek higher temperatures to increase growth rate, and poorly fed cod select lower temperatures to save metabolic energy. Depth and temperature of free-ranging adult cod (44–79 cm) were studied with data storage tags as part of a ranching project in an Icelandic fjord. Forage fish were regularly provided at four feeding stations where cod formed distinct “herds” (herd cod) that did not mingle much with the rest of the unconditioned cod in the fjord (wild cod). Several parameters (stomach fullness, liver index (fat reserves), co

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Eliason, Chad M., and Julia A. Clarke. "Metabolic physiology explains macroevolutionary trends in the melanic colour system across amniotes." Proceedings of the Royal Society B: Biological Sciences 285, no. 1893 (2018): 20182014. http://dx.doi.org/10.1098/rspb.2018.2014.

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Metabolism links organisms to their environment through its effects on thermoregulation, feeding behaviour and energetics. Genes involved in metabolic processes have known pleiotropic effects on some melanic colour traits. Understanding links between physiology and melanic colour is critical for understanding the role of, and potential constraints on, colour production. Despite considerable variation in metabolic rates and presumed ancestral melanic coloration in vertebrates, few studies have looked at a potential relationship between these two systems in a comparative framework. Here, we test

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Adelman, James S., Amanda W. Carter, William A. Hopkins, and Dana M. Hawley. "Deposition of pathogenic Mycoplasma gallisepticum onto bird feeders: host pathology is more important than temperature-driven increases in food intake." Biology Letters 9, no. 5 (2013): 20130594. http://dx.doi.org/10.1098/rsbl.2013.0594.

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Although ambient temperature has diverse effects on disease dynamics, few studies have examined how temperature alters pathogen transmission by changing host physiology or behaviour. Here, we test whether reducing ambient temperature alters host foraging, pathology and the potential for fomite transmission of the bacterial pathogen Mycoplasma gallisepticum (MG), which causes seasonal outbreaks of severe conjunctivitis in house finches ( Haemorhous mexicanus ). We housed finches at temperatures within or below the thermoneutral zone to manipulate food intake by altering energetic requirements o

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Kukal, Olga. "Winter mortality and the function of larval hibernacula during the 14-year life cycle of an arctic moth, Gynaephora groenlandica." Canadian Journal of Zoology 73, no. 4 (1995): 657–62. http://dx.doi.org/10.1139/z95-077.

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Larvae of the arctic moth Gynaephora groenlandica stop feeding and spin silk hibernacula before the peak of summer season in the Canadian High Arctic Archipelago. This study examines the function of these hibernacula in relation to the biotic and abiotic mortality factors of parasitism and temperature. Winter mortality of 10% among larvae in cages on the tundra was compared with previous results on parasitism (56% mortality). Prior to winter, the cages were used to record larval behaviour and the location of hibernacula. The majority of the larvae (81%) spun hibernacula, most of which were con

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Briggs, Allan. "Roosting and breeding behaviour of Tawny Frogmouths Podargus strigoides in central-coastal Queensland." Australian Field Ornithology 40 (2023): 70–76. http://dx.doi.org/10.20938/afo40070076.

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The roosting and breeding behaviour of a pair of Tawny Frogmouths Podargus strigoides was observed on the central Queensland coast over a period of 4 years (2018–2021). The study was conducted in a subtropical climate near Rockhampton, and provides data from a different geographical and climatic area compared with previous studies that were conducted in temperate southern Australia (New England Tablelands, Moree, and Sydney, New South Wales, and the Australian Capital Territory). Breeding data matched other studies: breeding in November–December, incubation of 28–30 days, fledging at 27–31 day

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di Virgilio, Agustina, Juan M. Morales, Sergio A. Lambertucci, Emily L. C. Shepard, and Rory P. Wilson. "Multi-dimensional Precision Livestock Farming: a potential toolbox for sustainable rangeland management." PeerJ 6 (May 30, 2018): e4867. http://dx.doi.org/10.7717/peerj.4867.

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Background Precision Livestock Farming (PLF) is a promising approach to minimize the conflicts between socio-economic activities and landscape conservation. However, its application on extensive systems of livestock production can be challenging. The main difficulties arise because animals graze on large natural pastures where they are exposed to competition with wild herbivores for heterogeneous and scarce resources, predation risk, adverse weather, and complex topography. Considering that the 91% of the world’s surface devoted to livestock production is composed of extensive systems (i.e., r

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Lactin, Derek J., and Dan L. Johnson. "ENVIRONMENTAL, PHYSICAL, AND BEHAVIOURAL DETERMINANTS OF BODY TEMPERATURE IN GRASSHOPPER NYMPHS (ORTHOPTERA: ACRIDIDAE)." Canadian Entomologist 130, no. 5 (1998): 551–77. http://dx.doi.org/10.4039/ent130551-5.

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AbstractWe describe a model which estimates grasshopper body temperature (Tb) by linking energy-flow equations with empirical descriptions of aboveground gradients of air temperature (Ta) and wind speed. The model was tested using restrained grasshopper nymphs; estimated and observed Tb agreed well (r2 > 0.81). At a rangeland site near Lethbridge, Alberta, Canada (49 °42′N, 112 °48′W), we observed 315 free-living grasshoppers. We recorded the shadow each cast on a horizontal surface, then reconstructed their orientation to the sun by geometric analysis. We used the model to estimate their T

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Faulkner, Patricia C., David Hala, Jessica Shimskie, et al. "Juvenile American Alligators (Alligator mississippiensis) Use Behavioral Thermoregulation to Cope with Dehydration and Salt-Loading when Chronically Exposed to 12 ‰ Saltwater." Animal Behavior and Cognition 10, no. 1 (2023): 1–13. http://dx.doi.org/10.26451/abc.10.01.01.2023.

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American alligators (Alligator mississippiensis) are native to freshwater habitats in the Southeastern United States. These areas are susceptible to salinity increases due to extreme weather events (e.g., hurricanes) and climate change. The goal of this study was to investigate behaviors in juvenile alligators exposed to 12‰ saltwater for five weeks. Sixteen alligators were maintained in an experimental tank with 90 L of water and a heat lamp overhanging a basking plate. Observations were conducted in freshwater (prior to exposure to saltwater) and over the course of 5 weeks in 12‰ saltwater.

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Mekonnen, Addisu, Peter J. Fashing, Vivek V. Venkataraman, Colin A. Chapman, Nils Chr Stenseth, and R. Adriana Hernandez-Aguilar. "Sleeping Site and Tree Selection by Bale Monkeys (Chlorocebus djamdjamensis) at Kokosa Forest Fragment in Southern Ethiopia." International Journal of Primatology 42, no. 6 (2021): 915–32. http://dx.doi.org/10.1007/s10764-021-00251-1.

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AbstractAlthough selecting advantageous sleeping sites is crucial for nonhuman primates, the extent to which different factors contribute to their selection remains largely unknown for many species. We investigated hypotheses relating to predator avoidance, food access, and thermoregulation to explain the sleeping behavior of Bale monkeys (Chlorocebus djamdjamensis) occupying a degraded fragmented forest, Kokosa, in the southern Ethiopian Highlands. We found that the study group reused 11 out of 20 sleeping sites used during the 42 study days over a 6-month period. Sleeping sites were usually

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Yakimova, Krassimira S., Rumen P. Nikolov, Ivan G. Todorov, and Milen H. Hristov. "Leptin and Gaba Interactions on Thermoregulation of Rats." Journal of Biomedical and Clinical Research 7, no. 1 (2014): 20–24. http://dx.doi.org/10.1515/jbcr-2015-0120.

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Abstract Leptin inhibits feeding, reduces body weight and increases thermogenesis. Experimental data suggest involvement of GABAergic mechanisms in the regulation of feeding behavior and energy balance. The present study was set to determine the effect of combinations from leptin, GABAB-agonist baclofen and GABAB-antagonist CGP35348 on thermoregulation of male Wistar rats, using in vivo and in vitro experiments. The substances used for in vivo experiments were administered intraperitoneally (i.p.). The measurement of the body temperature was done via thermistor probes (TX8) and monitored on mu

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KUKAL, OLGA, BERND HEINRICH, and JOHN G. DUMAN. "Behavioural Thermoregulation in the Freeze-Tolerant Arctic Caterpillar, Gynaephora Groenlandica." Journal of Experimental Biology 138, no. 1 (1988): 181–93. http://dx.doi.org/10.1242/jeb.138.1.181.

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Larvae of the high arctic caterpillar, Gynaephora groenlandica (Wöcke) (Lepidoptera: Lymantriidae) spent most (60 %) of their time orienting towards the sun (i.e. basking) and only 20% feeding, primarily near midday. Larvae usually basked after feeding, then either fed again or moved to a new feeding site. Basking larvae reached their highest body temperatures (Tb) of ≊30°C (≊20°C in excess of the ambient temperature) when surrounded by snow on a calm day in the midday sun. Setae significantly decreased larval cooling rates. Maximal metabolic rates were attained in basking larvae, but at body

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Werth, Alexander J. "Adaptations of the cetacean hyolingual apparatus for aquatic feeding and thermoregulation." Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology 290, no. 6 (2007): 546–68. http://dx.doi.org/10.1002/ar.20538.

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Iigaya, Kamon, Yoshino Minoura, Hiroshi Onimaru, Sayumi Kotani, and Masahiko Izumizaki. "Effects of Feeding-Related Peptides on Neuronal Oscillation in the Ventromedial Hypothalamus." Journal of Clinical Medicine 8, no. 3 (2019): 292. http://dx.doi.org/10.3390/jcm8030292.

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The ventromedial hypothalamus (VMH) plays an important role in feeding behavior, obesity, and thermoregulation. The VMH contains glucose-sensing neurons, the firing of which depends on the level of extracellular glucose and which are involved in maintaining the blood glucose level via the sympathetic nervous system. The VMH also expresses various receptors of the peptides related to feeding. However, it is not well-understood whether the action of feeding-related peptides mediates the activity of glucose-sensing neurons in the VMH. In the present study, we examined the effects of feeding-relat

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Rollo, C. D., M. Lai, K. Whitehead, M. L. Perreault, J. Lemon, and A. M. Chaudhry. "Thermoregulation of transgenic growth hormone mice." Canadian Journal of Zoology 82, no. 6 (2004): 934–49. http://dx.doi.org/10.1139/z04-052.

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Transgenic growth hormone (TG) mice (Mus musculus L., 1758) obtain enhanced growth via compensatory feeding at intermediate sizes and via higher growth efficiency. The latter involves diverting resources from other functions such as locomotion and wakefulness. Thermogenesis is a major expense for small mammals, so we explored whether TG mice express a trade-off between growth and thermoregulation. TG mice are hypothermic and cannot maintain their body temperature under cold stress. TG mice showed initial enlargement of brown adipose tissue and subsequent age-related decreases not seen in contr

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Lactin, Derek J., N. J. Holliday, and L. L. Lamari. "FEEDING BY COLORADO POTATO BEETLE LARVAE (COLEOPTERA: CHRYSOMELIDAE) IN FIELD CAGES: MEASUREMENTS AND A MODEL." Canadian Entomologist 127, no. 4 (1995): 479–92. http://dx.doi.org/10.4039/ent127479-4.

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AbstractFeeding rates of Colorado potato beetle larvae were measured in 24-h trials in small field cases on potato leaflets that remained attached to the plants. Four models were constructed to explain the results; these differed by including or excluding the effect of insolative heating on larval body temperature, and by including or excluding thermoregulatory behavior, in all combinations. In all instars, observed feeding was independent of mean body temperature during the trial as estimated by each model, and less than the amount predicted using this mean to drive constant-temperature feedi

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Hori, Tetsuro, Toshikazu Kiyohara, Toshihiro Nakashima, Masaaki Shibata, and Hisao Koga. "Multimodal responses of preoptic and anterior hypothalamic neurons to thermal and nonthermal homeostatic parameters." Canadian Journal of Physiology and Pharmacology 65, no. 6 (1987): 1290–98. http://dx.doi.org/10.1139/y87-205.

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The hypothesis that thermosensitive neurons in the preoptic anterior hypothalamic nuclei (POAH) have a principal role in central thermoregulation is based on numerous findings, suggesting correlations between the activity of thermosensitive neurons and thermoregulatory responses. Such relationships have been observed during thermal (local and peripheral) and pharmacological stimulation, during modulation of neural inputs from extra-POAH brain regions, and during actual thermoregulatory responses. Recent studies using in vitro slice preparations and conscious animals have revealed that 40–70% o

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Nobre, Ismael De Sousa, Gherman Garcia Leal de Araújo, Edson Mauro Santos, et al. "Ingestive behavior and thermoregulation in sheep fed forage cactus silage undergoing intermittent water supply." Semina: Ciências Agrárias 39, no. 4 (2018): 1683. http://dx.doi.org/10.5433/1679-0359.2018v39n4p1683.

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This study aimed to assess the effect of using forage cactus silage in the diet of sheep under intermittent water supply on its ingestive behavior and thermoregulation. We used in the experiment thirty-six intact male sheep of undefined genotype with an initial average weight of 19.8 ± 2.1 kg and age of approximately six months. The experimental design was a randomized block design in a 3 × 3 factorial scheme composed of three levels of forage cactus silage in the diet (0, 21, and 42%), three water supply periods (0, 24, and 48 hours), and four replications. For the ingestive behavior, observa

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Westbury, Becky. "Baby hats at birth: help or hindrance?" Practising midwife 25, no. 10 (2022): 32–34. http://dx.doi.org/10.55975/fhev5889.

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Hats are placed on many babies during initial skin-to-skin contact. Thermoregulation of the newborn is an important consideration of midwifery care, however skin-to-skin contact is arguably the most important element of this, and hats for term babies in skin-to-skin don’t aid temperature maintenance. Skin-to-skin also reduces postpartum haemorrhages and increases oxytocin. Whilst hats are beneficial for preterm babies, they may impede instinctive feeding and bonding behaviours for term babies and prevent parents from smelling and kissing their baby’s head. Therefore, individualised considerati

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Chessman, Bruce C. "Behavioural thermoregulation by Australian freshwater turtles: interspecific differences and implications for responses to climate change." Australian Journal of Zoology 67, no. 2 (2019): 94. http://dx.doi.org/10.1071/zo20004.

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The abilities of freshwater turtles to control their body temperatures by behavioural means have implications for activity, food ingestion and digestion, growth, reproduction and potential responses to climate change. I compared various forms of basking in nature, and responses to aquatic and aerial photothermal gradients in the laboratory, among three species of Australian chelid turtles: Chelodina expansa, C. longicollis and Emydura macquarii. Proclivity for behavioural thermoregulation varied substantially among these species, being highest in C. longicollis and lowest in C. expansa. Howeve

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Telliez, Frédéric, Véronique Bach, André Leke, Karen Chardon, and Jean-Pierre Libert. "Feeding behavior in neonates whose diet contained medium-chain triacylglycerols: short-term effects on thermoregulation and sleep." American Journal of Clinical Nutrition 76, no. 5 (2002): 1091–95. http://dx.doi.org/10.1093/ajcn/76.5.1091.

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Jensen, Paul G., Peter J. Pekins, and James B. Holter. "Compensatory effect of the heat increment of feeding on thermoregulation costs of white-tailed deer fawns in winter." Canadian Journal of Zoology 77, no. 9 (1999): 1474–85. http://dx.doi.org/10.1139/z99-111.

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For northern white-tailed deer (Odocoileus virginianus) fawns, the energetic cost of thermoregulation (HcE) during severe winters can result in substantial catabolism of body-tissue reserves. The heat increment of feeding (HiE) has the potential to offset thermoregulatory energy expenditure that would otherwise require the catabolism of these reserves. During winters 1996 and 1997, we conducted 18 fasting and 18 on-feed heat-production trials using indirect respiration calorimetry in a metabolic chamber. Nonlinear regression analysis was used to estimate the lower critical temperatures (Tlc) a

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Schekkerman, Hans, G. Henk Visser, and C. Blem. "Prefledging Energy Requirements in Shorebirds: Energetic Implications of Self-Feeding Precocial Development." Auk 118, no. 4 (2001): 944–57. http://dx.doi.org/10.1093/auk/118.4.944.

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Abstract Understanding ecological consequences of avian developmental modes requires knowledge of energy requirements of chicks of different positions in the precocial–altricial spectrum, but those have rarely been measured in birds with self-feeding precocial young. We studied prefledging energy budgets in chicks of Black-tailed Godwit (Limosa limosa) and Northern Lapwing (Vanellus vanellus) in the field and in the laboratory. Lapwings show slower growth than godwits, reaching a 29% lower fledging mass (142 vs. 201 g) in a 32% longer period (33 vs. 25 days). Daily energy expenditure (DEE), me

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Wildhaber, Mark L., and Larry B. Crowder. "Testing a Bioenergetics-Based Habitat Choice Model: Bluegill (Lepomis macrochirus) Responses to Food Availability and Temperature." Canadian Journal of Fisheries and Aquatic Sciences 47, no. 9 (1990): 1664–71. http://dx.doi.org/10.1139/f90-190.

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Using an automated shuttlebox system, we conducted patch choice experiments with 32, 8–12 g bluegill sunfish (Lepomis macrochirus) to test a behavioral energetics hypothesis of habitat choice. When patch temperature and food levels were held constant within patches but different between patches, we expected bluegill to choose patches that maximized growth based on the bioenergetic integration of food and temperature as predicted by a bioenergetics model. Alternative hypotheses were that bluegill may choose patches based only on food (optimal foraging) or temperature (behavioral thermoregulatio

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Jenssen, Bjørn Munro, Morten Ekker, and Claus Bech. "Thermoregulation in winter-acclimatized common eiders (Somateria mollissima) in air and water." Canadian Journal of Zoology 67, no. 3 (1989): 669–73. http://dx.doi.org/10.1139/z89-096.

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Metabolic heat production, body temperature, and skin temperatures of the back and breast were measured and the thermal conductance, and thus insulation, estimated in winter-acclimatized common eiders (Somateria mollissima) exposed to air and water. When exposed to low air temperatures, the plumage was responsible for most of the insulation. When exposed to water, the insulation in the plumage was reduced. This decrease was, however, compensated through increased peripheral vasoconstriction. A low total thermal conductance lowers the energetic costs of existence in cold environments. This redu

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Welch,, Kenneth C., and Raul K. Suarez. "Altitude and temperature effects on the energetic cost of hover-feeding in migratory rufous hummingbirds, Selasphorus rufus." Canadian Journal of Zoology 86, no. 3 (2008): 161–69. http://dx.doi.org/10.1139/z07-127.

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During migratory stopovers, rufous hummingbirds ( Selasphorus rufus (Gmelin, 1788)) can achieve high daily rates of net energy intake and mass gain while foraging at a range of elevations and ambient temperatures, despite the high energetic costs of hovering flight and thermoregulation. To gain insights into the factors affecting the energetic costs incurred during foraging, we captured migratory hummingbirds and measured their oxygen consumption rates during hover-feeding. Measurements were performed in situ where rufous hummingbirds forage as they migrate at several locations along a gradien

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Gregory, Patrick T., Lisa H. Crampton, and Kristina M. Skebo. "Conflicts and interactions among reproduction, thermoregulation and feeding in viviparous reptiles: are gravid snakes anorexic?" Journal of Zoology 248, no. 2 (1999): 231–41. http://dx.doi.org/10.1111/j.1469-7998.1999.tb01199.x.

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Hawkins, P., P. Butler, A. Woakes, and G. Gabrielsen. "Heat increment of feeding in Brunnich's guillemot." Journal of Experimental Biology 200, no. 12 (1997): 1757–63. http://dx.doi.org/10.1242/jeb.200.12.1757.

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The rate of oxygen consumption (O2), respiratory quotient (RQ) and deep body temperature (TB) were recorded during a single, voluntary ingestion of Arctic cod Boreogadus saida (mean mass 18.9+/-1.1 g, s.e.m., N=13) by five postabsorptive Brunnich's guillemots (thick-billed murre, Uria lomvia). The birds were resting in air within their thermoneutral zone, and the fish were refrigerated to 0-2 degreesC. The rate of oxygen consumption increased by a factor of 1.4 during the first few minutes after ingestion, but there was no significant change in TB. Mean rate of oxygen consumption returned to p

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Gregory, Patrick T. "Feeding, Thermoregulation, and Offspring Viability in Gravid Garter Snakes (Thamnophis sirtalis): What Makes Laboratory Results Believable?" Copeia 2001, no. 2 (2001): 365–71. http://dx.doi.org/10.1643/0045-8511(2001)001[0365:ftaovi]2.0.co;2.

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Moosa, M. Y. H., and F. Y. Jeenah. "Orexin - does it have a role in mental illness?" South African Journal of Psychiatry 14, no. 2 (2008): 2. http://dx.doi.org/10.4102/sajpsychiatry.v14i2.159.

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Orexin-A and Orexin-B (also known as hypocretin 1 and 2) are, respectively, 33- and 28-amino acid residue peptides that activate a G-protein-coupled ‘orphan’ receptor, i.e. which has no known ligand. Immuno-cytochemical studies show that orexin-positive neurons are located in the lateral hypothalamic area and arcuate and perifornical nuclei. They are also found in various sites beyond the hypothalamus such as the thalamic paraventricular and reuniens nuclei, locus coeruleus, nucleus of the solitary tract, raphe and septal nuclei. The hypothalamus has a major role in regulating various behaviou

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Benoit, Joshua B., Giancarlo Lopez-Martinez, Michael A. Elnitsky, Richard E. Lee, and David L. Denlinger. "Short Note: Increase in feeding by the tick, Ixodes uriae, on Adélie penguins during a prolonged summer." Antarctic Science 21, no. 2 (2008): 151–52. http://dx.doi.org/10.1017/s0954102008001685.

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Ixodes uriae White is the only tick species found in Antarctica, and in our research area at Palmer Station it feeds predominantly on Adélie penguins. At the beginning of the summer the ticks leave their off-host aggregation sites, feed on penguins, then subsequently return to their off-host habitats, where they remain until the next summer (Benoit et al. 2007). These ticks have been implicated as a competent vector for Borrelia spirochetes (Olsen et al. 1993) and tick-borne viruses (Nuttall 1984), and are thought to impact development, cause anaemia, alter the thermoregulation, and even lead

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Podhorna, Jana, Cindy Aubernon, Marie Borkovcova, Julien Boulay, Valery Hedouin, and Damien Charabidze. "To eat or get heat: Behavioral trade-offs between thermoregulation and feeding in gregarious necrophagous larvae." Insect Science 25, no. 5 (2017): 883–93. http://dx.doi.org/10.1111/1744-7917.12465.

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Mikitová, Barbora, Martina Šemeláková, and Ľubomir Panigaj. "Wing morphology and eyespot pattern of Erebia medusa (Lepidoptera, Nymphalidae) vary along an elevation gradient in the Carpathian Mountains." Nota Lepidopterologica 45 (July 5, 2022): 233–50. http://dx.doi.org/10.3897/nl.45.68624.

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Butterfly wings play a crucial role during flight, but also in thermoregulation, intraspecific signalling and interaction with predators, all of which vary across different habitat types and may be reflected in wing morphology or colour pattern. We focused on the morphological variability of Erebia medusa in order to examine patterns and variations in the colouration and morphology of wings from areas representing different habitat types with different environmental characteristics. The barrier (larger fragments of forest) between populations of Erebia medusa along the elevation gradient of Ko

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Davis, R. W., T. M. Williams, J. A. Thomas, R. A. Kastelein, and L. H. Cornell. "The effects of oil contamination and cleaning on sea otters (Enhydra lutris). II. Metabolism, thermoregulation, and behavior." Canadian Journal of Zoology 66, no. 12 (1988): 2782–90. http://dx.doi.org/10.1139/z88-406.

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The purpose of this study was to develop a method to clean and rehabilitate sea otters (Enhydra lutris) that might become contaminated during an oil spill and to determine which physiological and behavioral factors were important in restoring the insulation provided by the fur. Tests were conducted on 12 sea otters captured in Alaska and brought to the Sea World Research Institute in San Diego. Measurements of average metabolic rate, core body temperature, behavior, and squalene (the major lipid of sebum) concentration on the fur were made under three conditions: (i) before oiling (base line),

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Kaseloo, Paul A., and James R. Lovvorn. "Effects of surface activity patterns and dive depth on thermal substitution in fasted and fed lesser scaup (Aythya affinis) ducks." Canadian Journal of Zoology 83, no. 2 (2005): 301–11. http://dx.doi.org/10.1139/z05-012.

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High thermoregulation costs incurred by aquatic endotherms can be reduced if heat from digestion and exercising muscles can substitute for thermogenesis. Costs (VO2) of surface activities and diving were measured in lesser scaup (Aythya affinis (Eyton, 1838)) ducks while fasted and when feeding on mixed grain at depths of 1.2 and 2 m at thermoneutral (23 °C) and sub-thermoneutral (8 °C) water temperatures. Substitution occurred if the heat increment of feeding (HIF) or costs of activities above resting metabolic rate (RMR) were lower at 8 °C than at 23 °C, indicating that the thermoregulatory

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Shimatani, Hiroyuki, Yuichi Inoue, Yota Maekawa, Takahito Miyake, Yoshiaki Yamaguchi, and Masao Doi. "Thermographic imaging of mouse across circadian time reveals body surface temperature elevation associated with non-locomotor body movements." PLOS ONE 16, no. 5 (2021): e0252447. http://dx.doi.org/10.1371/journal.pone.0252447.

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Circadian clocks orchestrate multiple different physiological rhythms in a well-synchronized manner. However, how these separate rhythms are interconnected is not exactly understood. Here, we developed a method that allows for the real-time simultaneous measurement of locomotor activity and body temperature of mice using infrared video camera imaging. As expected from the literature, temporal profiles of body temperature and locomotor activity were positively correlated with each other. Basically, body temperatures were high when animals were in locomotion. However, interestingly, increases in

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Babcock, Alex M., and Chris Barton. "Bombesin-Induced Hypothermia in the Insulin-Treated Rat: Effect on Tail-Skin Temperature." Perceptual and Motor Skills 69, no. 3_suppl (1989): 1339–45. http://dx.doi.org/10.2466/pms.1989.69.3f.1339.

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Bombesin-like peptides are widely distributed in the mammalian central nervous system and appear to participate in the regulation of a variety of autonomic functions. Bombesin has been shown to alter feeding behavior, locomotor activity, and thermoregulation. Microinfusion of bombesin into the preoptic area of the hypothalamus produces a reduction in core body temperature, but only if the rat has been cold-exposed, food-deprived, or pretreated with insulin. The mechanism for bombesin-induced hypothermia under the latter two conditions is unknown. The present study evaluated the possible contri

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Babcock, Alex M., and Chris Barton. "Bombesin-Induced Hypothermia in the Insulin-Treated Rat: Effect on Tail-Skin Temperature." Perceptual and Motor Skills 69, no. 3-2 (1989): 1339–45. http://dx.doi.org/10.1177/00315125890693-251.

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Bombesin-like peptides are widely distributed in the mammalian central nervous system and appear to participate in the regulation of a variety of autonomic functions. Bombesin has been shown to alter feeding behavior, locomotor activity, and thermoregulation. Microinfusion of bombesin into the preoptic area of the hypothalamus produces a reduction in core body temperature, but only if the rat has been cold-exposed, food-deprived, or pretreated with insulin. The mechanism for bombesin-induced hypothermia under the latter two conditions is unknown. The present study evaluated the possible contri

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Ross, S., R. Kamnitzer, B. Munkhtsog, and S. Harris. "Den-site selection is critical for Pallas’s cats (Otocolobus manul)." Canadian Journal of Zoology 88, no. 9 (2010): 905–13. http://dx.doi.org/10.1139/z10-056.

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We evaluated the habitat selection of 101 den sites used by 21 individual Pallas’s cats ( Otocolobus manul (Pallas, 1776) = Felis manul Pallas, 1776) in summer, winter, and the maternal period in central Mongolia using generalized linear mixed models. Pallas’s cats used rock crevices and marmot burrows as dens for giving birth, raising young, thermoregulation, feeding, mating, and as important cover from predators. Den sites were selected with higher proportions of rocky and ravine habitats in the surroundings, and in winter Pallas’s cats avoided the presence of humans. Habitat and structural

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Gyalus, Adrienn, Péter Lovászi, Zsolt Végvári, and Tibor Csörgő. "Effects of climate variables on the White Stork (Ciconia ciconia L.) productivity in a long term study." Ornis Hungarica 30, no. 2 (2022): 61–74. http://dx.doi.org/10.2478/orhu-2022-0020.

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Abstract We analysed the effects of weather and climatic patterns on the productivity of the White Stork in Hungary between 1958 and 2017, using i) linear mixed effect models (LMM), ii) LMM-s extended by a single random effect variable or a nested combination; iii) LMM-s extended by a single fixed effect variable and iv) using an additive model of the selected variables. As a preselection, the following climatic variables were identified with substantial support: March mean temperature, March precipitation, April mean temperature, June mean temperature, June precipitation (negative), July mean

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HILLSTRÖM, Lars, and Juan Moreno. "Variation in Time and Energy Budgets of Breeding Wheatears." Behaviour 120, no. 1-2 (1992): 11–39. http://dx.doi.org/10.1163/156853992x00183.

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AbstractWe examined the sources of variation in time allocation of males and females of the wheatear (Oenanthe oenanthe) on the island of Öland, South Sweden, throughout the breeding season. We quantified rates of prey capture attempts and specified foraging methods used. From respirometric measurements of basal metabolic rate and temperature-dependent metabolism on captive wheatears, and after having made certain assumptions abour the costs of different activities, we estimated the energy budgets of both sexes during the different reproductive phases. Males and females differed in their time

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Martinez, Quentin, Julien Clavel, Jacob A. Esselstyn, et al. "Convergent evolution of olfactory and thermoregulatory capacities in small amphibious mammals." Proceedings of the National Academy of Sciences 117, no. 16 (2020): 8958–65. http://dx.doi.org/10.1073/pnas.1917836117.

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Olfaction and thermoregulation are key functions for mammals. The former is critical to feeding, mating, and predator avoidance behaviors, while the latter is essential for homeothermy. Aquatic and amphibious mammals face olfactory and thermoregulatory challenges not generally encountered by terrestrial species. In mammals, the nasal cavity houses a bony system supporting soft tissues and sensory organs implicated in either olfactory or thermoregulatory functions. It is hypothesized that to cope with aquatic environments, amphibious mammals have expanded their thermoregulatory capacity at the

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da Silva, Charlene, Sven E. Kerwath, Henning Winker, et al. "Testing the waters to find the 'goldilocks' zone: fine-scale movement of Mustelus mustelus in relation to environmental cues." Marine and Freshwater Research 73, no. 1 (2022): 110. http://dx.doi.org/10.1071/mf20369.

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The fine-scale movement of Mustelus mustelus in relation to environmental conditions was investigated at various temporal scales with acoustic telemetry and temperature–depth transmitters inside a coastal marine protected area in South Africa. Twenty-four sharks were equipped with acoustic tags and logged by an array of 28 acoustic receivers from November 2006 to November 2008. Generalised additive and generalised additive mixed models (GAMMs) were used to explain patterns of movement in terms of the environmental conditions related to temperature, the rate of change of temperature, tidal flow

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Vitt, Laurie J., Peter A. Zani, and A. Claudia Marinho Lima. "Heliotherms in tropical rain forest: the ecology of Kentropyx calcarata (Teiidae) and Mabuya nigropunctata (Scincidae) in the Curuá-Una of Brazil." Journal of Tropical Ecology 13, no. 2 (1997): 199–220. http://dx.doi.org/10.1017/s0266467400010415.

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ABSTRACTKentropyx calcarata (Teiidae) and Mabuya nigropunctata (Scincidae) occur together in lowland tropical forest of the Amazon near the Rio Curuá-Una of Brazil. During the wet season of 1995 these lizards were common at forest edge along narrow roads that transect forest, in treefalls and along streams where sun reaches the ground. Both species are heliothermic, basking to gain heat. Their association with open patches results from high activity temperature requirements in an environment where sun availability is low. Null temperature distributions from forest and treefalls showed that for

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OKITA, MINORU, AKIO INUI, MASAKI MIURA, YOSHIAKI HIROSUE, MASAHARU NAKAJIMA, and SHIGEAKI BABA. "Central Actions of Neuropeptide Y and Its Related Peptides in the Dog, with Special Reference to Their Effects on the Hypothalamic-Pituitary-Adrenal Axis, Feeding Behavior, and Thermoregulation." Annals of the New York Academy of Sciences 611, no. 1 Central and P (1990): 483–85. http://dx.doi.org/10.1111/j.1749-6632.1990.tb48993.x.

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Corcoran, Andrea E., George B. Richerson, and Michael B. Harris. "Functional link between the hypocretin and serotonin systems in the neural control of breathing and central chemosensitivity." Journal of Neurophysiology 114, no. 1 (2015): 381–89. http://dx.doi.org/10.1152/jn.00870.2013.

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Serotonin (5-HT)-synthesizing neurons of the medullary raphe are putative central chemoreceptors, proposed to be one of potentially multiple brain stem chemosensitive cell types and loci interacting to produce the respiratory chemoreflex. Hypocretin-synthesizing neurons of the lateral hypothalamus are important contributors to arousal state, thermoregulation, and feeding behavior and are also reportedly involved in the hypercapnic ventilatory response. Recently, a functional interaction was found between the hypocretin system and 5-HT neurons of the dorsal raphe. The validity and potential sig

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HARRISON, JON M. "Temperature Effects on Haemolymph Acid-Base Status In Vivo and In Vitro in the Two-Striped Grasshopper Melanoplus Bivittatus." Journal of Experimental Biology 140, no. 1 (1988): 421–35. http://dx.doi.org/10.1242/jeb.140.1.421.

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In this study, I examine the effect of temperature on haemolymph acid-base status in vivo and in vitro in the two-striped grasshopper Melanoplus bivittatus. Melanoplus bivittatus experience wide (up to 40 °C) diurnal body temperature fluctuations in the field, but maintain body temperature relatively constant during sunny days by behavioural thermoregulation. Haemolymph pH was statistically constant (7.12) between 10 and 25°C, but decreased by −0.017 units °C− from 25 to 40°C. Relative alkalinity and fractional protein dissociation were conserved only at body temperatures at which feeding and

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