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Harris Gareth G Department of Organismic and Evolutionary Biology, Center for Brain Science, Harvard University, Cambridge, Massachusetts 02138, - - 2014
Food is critical for survival. Many animals, including the nematode Caenorhabditis elegans, use sensorimotor systems to detect and locate preferred food sources. However, the signaling mechanisms underlying food-choice behaviors are poorly understood. Here, we characterize the molecular signaling that regulates recognition and preference between different food odors in C. elegans. ...
Lichtenberg Elinor M EM Division of Biological Sciences, University of California, San Diego, 9500 Gilman Dr. #0116, La Jolla, CA 92093-0116, USA; Present address: Department of Entomology, Washington State University, PO Box 646382, Pullman, WA 99164-6382, USA. Electronic address: - - 2014
Animal communication signals generally evolve to become increasingly conspicuous for intended receivers [1]. However, such conspicuous signals are also more susceptible to eavesdropping, i.e. exploitation by unintended receivers [2]. It is typically thought that eavesdroppers harm signalers and select against conspicuous signals [3]. But, if signal conspicuousness deters eavesdroppers by ...
Alhadeff Amber L AL University of Pennsylvania - - 2014
Central glucagon-like peptide-1 receptor (GLP-1R) signaling reduces food intake by affecting a variety of neural processes including those mediating satiation, motivation, and reward. While the literature suggests that separable neurons and circuits control these processes, this notion has not been adequately investigated. The feeding inhibitory effects of GLP-1R signaling in ...
Marchiori David D Department of Clinical and Health Psychology, Utrecht University. Electronic address: - - 2014
People consistently over-eat when served a large compared to a small (appropriate) portion of food. However, the mechanism underlying this so-called portion size effect is not well understood. We argue that the process of anchoring and adjustment naturally describes this effect, such that the size of a presented portion works ...
Herbert Beate M BM Health Psychology, Institute of Psychology, University of Ulm, Germany. Electronic address: - - 2014
Perceiving internal signals of hunger and satiety is related to the regulation of food intake. Recent data suggest that interoception (perception of bodily signals) and interoceptive sensitivity (sensitivity for internal signals) might be a crucial variable for the regulation of behavior associated with feelings of satiety. It is yet unclear ...
Urquhart-Cronish Mackenzie M Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, Canada M5S - - 2014
Life history consequences of stress in early life are varied and known to have lasting impacts on the fitness of an organism. Gene-environment interactions play a large role in how phenotypic differences are mediated by stressful conditions during development. Here we use natural allelic 'rover/sitter' variants of the foraging (for) ...
Schindler Adam J AJ Department of Biology, Duke University, Durham, North Carolina, United States of - - 2014
Organisms in the wild develop with varying food availability. During periods of nutritional scarcity, development may slow or arrest until conditions improve. The ability to modulate developmental programs in response to poor nutritional conditions requires a means of sensing the changing nutritional environment and limiting tissue growth. The mechanisms by ...
Flower Tom P TP Department of Science and Technology/National Research Foundation Centre of Excellence at the Percy FitzPatrick Institute, University of Cape Town, Rondebosch 7701, South - - 2014
Deception is common in nature, but victims of deception discriminate against and ultimately ignore deceptive signals when they are produced too frequently. Flexible variation of signals could allow evasion of such constraints. Fork-tailed drongos (Dicrurus adsimilis) use false alarm calls to scare other species away from food that they then ...
Thiéry D D INRA, ISVV, UMR 1065 Santé et Agroécologie du Vignoble, F-33883 Villenave d'Ornon, - - 2014
Effective pest management with lower amounts of pesticides relies on accurate prediction of insect pest growth rates. Knowledge of the factors governing this trait and the resulting fitness of individuals is thus necessary to refine predictions and make suitable decisions in crop protection. The European grapevine moth, Lobesia botrana, the ...
Deshpande Sonali A SA 1] Department of Metabolism and Aging, The Scripps Research Institute, Jupiter, Florida, USA. - - 2014
Food intake is a fundamental parameter in animal studies. Despite the prevalent use of Drosophila in laboratory research, precise measurements of food intake remain challenging in this model organism. Here, we compare several common Drosophila feeding assays: the capillary feeder (CAFE), food labeling with a radioactive tracer or colorimetric dye ...
Zentall Thomas R TR University of Kentucky, United States. Electronic address: - - 2014
Human gambling often involves the choice of a low probability but high valued outcome over a high probability (certain) low valued outcome (not gambling) that is economically more optimal. We have developed an analog of gambling in which pigeons prefer a suboptimal alternative that infrequently provides a signal for a ...
Smith Craig M CM The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Victoria, Australia; Florey Department of Neuroscience and Mental Health, The University of Melbourne, Victoria, - - 2014
Behavioural arousal in mammals is regulated by various interacting central monoamine- and peptide- neurotransmitter/receptor systems, which function to maintain awake, alert and active states required for performance of goal-directed activities essential for survival, including food seeking. Existing anatomical and functional evidence suggests the highly-conserved neuropeptide, relaxin-3, which signals via its ...
Weltens N N Translational Research Centre for Gastrointestinal Disorders (TARGID), Department of Clinical & Experimental Medicine, University of Leuven, Leuven, - - 2014
Food in general, and fatty foods in particular, have obtained intrinsic reward value throughout evolution. This reward value results from an interaction between exteroceptive signals from different sensory modalities, interoceptive hunger/satiety signals from the gastrointestinal tract to the brain, as well as ongoing affective and cognitive processes. Further evidence linking ...
Anderberg Rozita H RH Department of Physiology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, - - 2014
Mesolimbic dopamine plays a critical role in food-related reward processing and learning. The literature focuses primarily on the nucleus accumbens as the key dopaminergic target in which enhanced dopamine signaling is associated with reward. Here, we demonstrate a novel neurobiological mechanism by which dopamine transmission in the amygdala regulates food ...
Maurin Anne-Catherine AC UMR 1019 Nutrition Humaine, INRA, Université Clermont 1, Centre de Clermont-Ferrand-Theix, 63122 Saint Genès Champanelle, - - 2014
The reversible phosphorylation of the α subunit of eukaryotic initiation factor 2 (eIF2α) is a highly conserved signal implicated in the cellular adaptation to numerous stresses such as the one caused by amino acid limitation. In response to dietary amino acid deficiency, the brain-specific activation of the eIF2α kinase GCN2 ...
Craig Andrew R AR West Virginia - - 2014
The effects of intermittent schedules of reinforcement for pausing were evaluated in two experiments. In Experiment 1, across a series of conditions, a variable-interval (VI) baseline schedule, in which pigeons' key pecks produced food, alternated with conditions in which food was delivered according to a concurrent VI (for key pecking) ...
Abed-Vieillard Dehbia D Centre des Sciences du Goût et de l'Alimentation, UMR 6265 CNRS, UMR 1324 INRA, Université de Bourgogne, Dijon, 6, Bd Gabriel, F-21000 Dijon, - - 2014
Food choice and preference relies on multiple sensory systems that are under the control of genes and sensory experience. Exposure to specific nutrients and nutrient-related molecules can change food preference in vertebrates and invertebrates. For example, larval exposure of several holometabolous insects to menthol can change their adult response to ...
Chisada Shin-ichi - - 2014
The first studies that identified leptin and its receptor (LepR) in mammals were based on mutant animals that displayed dramatic changes in body-weight and regulation of energy homeostasis. Subsequent studies have shown that a deficiency of leptin or LepR in homoeothermic mammals results in hyperphagia, obesity, infertility and a number ...
Johnson Haley H Biology Department, University of Jamestown, Jamestown, North Dakota, United States of - - 2014
In animals with complex life cycles, all resources needed to form adult tissues are procured at the larval stage. For butterflies, the proper development of wings involves synthesizing tissue during metamorphosis based on the raw materials obtained by larvae. Similarly, manufacture of pigment for wing scales also requires resources acquired ...
Farine Jean-Pierre JP Centre des Sciences du Goût et de l'Alimentation, UMR6265 CNRS, UMR1324 INRA, Université de Bourgogne, , 6 Boulevard Gabriel, Dijon 21000, - - 2014
Insects use chemosensory cues to feed and mate. In Drosophila, the effect of pheromones has been extensively investigated in adults, but rarely in larvae. The colonization of natural food sources by Drosophila buzzatii and Drosophila simulans species may depend on species-specific chemical cues left in the food by larvae and ...
Diaz Sylvia Anaid - - 2014
Animals use environmental information to make developmental decisions to maximise their fitness. The nematode Caenorhabditis elegans measures its environment to decide between arresting development as dauer larvae or continuing to grow and reproduce. Worms are thought to use ascarosides as signals of population density and this signalling is thought to ...
Ro Jennifer J Cellular and Molecular Biology Program, University of Michigan, Ann Arbor, Michigan, United States of - - 2014
We present a complete hardware and software system for collecting and quantifying continuous measures of feeding behaviors in the fruit fly, Drosophila melanogaster. The FLIC (Fly Liquid-Food Interaction Counter) detects analog electronic signals as brief as 50 µs that occur when a fly makes physical contact with liquid food. Signal ...
Yu Na N Department of Crop Protection, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, - - 2013
Insects acquire essential nutrients from their food to support a diverse range of biological processes such as development and reproduction. An important role in the food intake regulation is attributed to the neurohormone sulfakinin signaling pathway. Sulfakinins (SKs) elicit satiety together with sulfakinin receptors (SKRs). In this project, the gene ...
Rice Nathaniel - - 2013
Previous research has shown rapid learning of multiple temporal relations between signals and food by pigeons when these relations are changed unpredictably each session (Kyonka & Grace, 2007). The goal of the present study was to test whether contextual temporal cues-that is, an alternative signal-food delay that was a valid ...
Riffell Jeffrey A JA Department of Biology, University of Washington, Seattle, WA 98195, USA. Electronic address: - - 2013
A new study reveals how Drosophila uses their sense of smell to decide on where to lay their eggs. These results have exciting implications for the evolution of fruit preference and parasitoid avoidance in fruit flies.
Durisko Zachary - - 2013
We investigated whether adult fruit flies (Drosophila melanogaster) use cues of larvae as social information in their food patch choice decisions. Adult male and female fruit flies showed attraction to odours emanating from foraging larvae, and females preferred to lay eggs on food patches occupied by larvae over similar unoccupied ...
Zentall Thomas R - - 2013
Human gambling often involves the choice of a low probability but high valued outcome over a high probability (certain) low valued outcome (not gambling) that is economically more optimal. We have developed an analog of gambling in which pigeons prefer a suboptimal alternative that infrequently provides a signal for a ...
Busscher Nicolaas - - 2013
How can food quality influence pattern of cucl2 crystals?
Wang Hong-Tao - - 2013
Arcuate nucleus of hypothalamus (ARH) is the core component in the regulation circuits of food intake and energy homeostasis. ARH projections to other parts of the hypothalamus and to extrahypothalamic areas are established in the postnatal two weeks, which is a pivotal stage for individual development. β-catenin, a cell adhesion ...
Williams Michael J - - 2013
Exposure to bisphenol A (BPA) in rodents was shown to induce obesity, yet the mechanism by which BPA might induce obesity is still unclear. We employed the genetically tractable model organism, Drosophila melanogaster, to test the effects of raising them on food containing various concentrations of BPA. Of note, raising ...
Chisada Shin-Ichi SI Aquatic Animal Health Division, National Research Institute of Aquaculture, Fisheries Research Agency, 224-1 Hiruta, Tamaki, Mie, 519-0423, Japan. Electronic address: - - 2013
The first studies that identified leptin and its receptor (LepR) in mammals were based on mutant animals that displayed dramatic changes in body-weight and regulation of energy homeostasis. Subsequent studies have shown that a deficiency of leptin or LepR in homoeothermic mammals results in hyperphagia, obesity, infertility and a number ...
Lopez Andrew L AL 3rd Department of Genetics, University of Texas M.D. Anderson Cancer Center, Houston, TX 77030, - - 2013
Coupling the production of mature gametes and fertilized zygotes to favorable nutritional conditions improves reproductive success. In invertebrates, the proliferation of female germline stem cells is regulated by nutritional status. However, in mammals, the number of female germline stem cells is set early in development, with oocytes progressing through meiosis ...
Mietlicki-Baase Elizabeth G EG Translational Neuroscience Program - - 2013
Glucagon-like peptide-1 receptor (GLP-1R) activation in the ventral tegmental area (VTA) is physiologically relevant for the control of palatable food intake. Here, we tested whether the food intake-suppressive effects of VTA GLP-1R activation are mediated by glutamatergic signaling within the VTA. Intra-VTA injections of the GLP-1R agonist exendin-4 (Ex-4) reduced ...
Cha Dong H DH U.S. Department of Agriculture-Agriculture Research Service, Yakima Agricultural Research Laboratory, 5230 Konnowac Pass Rd., Wapato, WA 98951, - - 2013
We determined the attractiveness of a new chemical lure compared with fermented food baits in use for trapping Drosophila suzukii Matsumura, spotted wing drosophila (Diptera: Drosophilidae), in Connecticut, New York, and Washington in the United States and at Dossenheim in Germany. The chemical lure (SWD lure) and food baits were ...
Pegram Kimberly V KV 1 School of Life Sciences, Arizona State University, Tempe, AZ - - 2013
Abstract Predation on distasteful animals should favor warning coloration that is relatively conspicuous and phenotypically invariable. However, even among similarly colored individuals there can be variation in their warning signals. In butterflies, individual differences in larval feeding history could cause this variation. The warning signal of the pipevine swallowtail butterfly, ...
Lizé Anne - - 2013
The animal gut commonly contains a large reservoir of symbiotic microbes. Although these microbes have obvious functions in digestion and immune defence, gut microbes can also affect behaviour. Here, we explore whether gut microbiota has a role in kin recognition. We assessed whether relatedness, familiarity and food eaten during development ...
Kanoski Scott E - - 2013
The adipose-derived hormone leptin signals in the medial nucleus tractus solitarius (mNTS) to suppress food intake, in part, by amplifying within-meal gastrointestinal (GI) satiation signals. Here we show that mNTS leptin receptor (LepRb) signaling also reduces appetitive and motivational aspects of feeding, and that these effects can depend on energy ...
Cook Amy - - 2013
Dogs are strongly influenced by human behavior, and they readily form bonds with specific humans. Yet these lines of inquiry are not often combined. The goal of this study was to investigate whether such bonds would play a role in how dogs behave in response to human signals. Using various ...
Stevanovic Darko - - 2013
Signalling through the mammalian target of rapamycin complex 1 (mTORC1) and its effectors the S6-kinases (S6K) in the hypothalamus is thought to be involved in nutrient sensing and control of food intake. Given the anatomical proximity of this pathway to circuits for the hormone ghrelin, we investigated the potential role ...
Zhang Weizhen - - 2013
Previous studies demonstrate that mTOR signaling in the hypothalamus is involved in the control of energy homeostasis. The aim of this study is to characterize the effect of mTOR signaling in the dorsal motor nucleus of vagus (DMNV) on the energy intake. Phosphor-mTOR was detected in the DMNV neurons and ...
Merkestein M - - 2013
Background:Rats that have restricted access to food at a fixed time point of the circadian phase display high levels of food anticipatory activity (FAA). The orexigenic hormone ghrelin has been implicated in the regulation of FAA. However, is not known via which brain area ghrelin exerts this effect. Ghrelin receptor ...
Jannat Khandaker Noor-E - - 2013
Mosquito larval habitat determines the fitness, survivorship, fecundity, and vector capacity of emerging adults. We manipulated larval density and food provisioning in the laboratory to determine their effects on a number of life history parameters of Anopheles gambiae. Larval mortality was positively correlated with larval density. In addition, increased density ...
Chambers Adam P AP Metabolic Diseases Institute, University of Cincinnati, 2170 E. Galbraith Road, Bldg E, 3rd Floor, ML 0503, Cincinnati, OH 45237, USA. - - 2013
Individual meals are products of a complex interaction of signals related to both short-term and long-term availability of energy stores. In addition to maintaining the metabolic demands of the individual in the short term, levels of energy intake must also maintain and defend body weight over longer periods. To accomplish ...
Matsuura Tetsuya - - 2013
In the nematode Caenorhabditis elegans, the odorant diacetyl is sensed by AWA sensory neurons in the amphid sensory organ and elicits an attractive response, whereas 2-nonanone is sensed by AWB amphid sensory neurons and elicits an avoidance response. In the present study, we report that nematodes exhibit a sensory interaction ...
Ladyman Sharon R SR Centre for Neuroendocrinology and Department of Anatomy; School of Medical Sciences; University of Otago; Dunedin, New - - 2013
The regulation of energy balance requires a complex system to homeostatically maintain the adult body at a precise set point. The central nervous system, particularly the hypothalamus, plays a key role in integrating a variety of signals that can relay information about the body's energy stores. As part of this ...
Yu Na - - 2013
Sulfakinins (SK) are multifunctional neuropeptides widely found in insects that are structurally and functionally homologous to the mammalian gastrin/cholecystokinin (CCK) neuropeptides. CCK is involved in various biological processes such as the feeding regulation where it induces satiety. In this project we characterized SK and SK receptor (SKR) of an important ...
Mietlicki-Baase Elizabeth G EG Translational Neuroscience Program, Department of Psychiatry, Perelman School of Medicine at University of Pennsylvania, Philadelphia, PA 19104, USA. - - 2013
The ability of amylin, a pancreatic β-cell-derived neuropeptide, to promote negative energy balance has been ascribed to neural activation at the area postrema. However, despite amylin binding throughout the brain, the possible role of amylin signaling at other nuclei in the control of food intake has been largely neglected. We ...
Uysal Handan - - 2013
Nowadays, food dyes obtained from herbal, animal, microbial and mineral sources are widely used as food additives. In this study, the toxic effects of three different natural food dyes (carmine, turmeric and annatto) on 72 ± 4 h larvae of Oregon-R wild type of Drosophila melanogaster were investigated. For this ...
Wasserman Sara - - 2013
Carbon dioxide (CO(2)) elicits an attractive host-seeking response from mosquitos yet is innately aversive to Drosophila melanogaster despite being a plentiful byproduct of attractive fermenting food sources. Prior studies used walking flies exclusively, yet adults track distant food sources on the wing. Here we show that a fly tethered within ...
Fedurek Pawel - - 2013
There is an ongoing debate about the adaptive function of chimpanzee's food-associated calls. Here, we tested a new hypothesis that food-associated calls in male chimpanzees function to signal that the calling individual is likely to initiate or prolong feeding. We propose that the signal functions to coordinate activities between individuals ...
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