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Ellen D. Ketterson - One of the best experts on this subject based on the ideXlab platform.
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Intraspecific preen oil odor preferences in dark-eyed juncos (Junco hyemalis)
2020Co-Authors: Danielle J Whittaker, Jonathan W. Atwell, Kaitlin M. Richmond, Allison K. Miller, Ryan P. Kiley, Christine Bergeon Burns, Ellen D. KettersonAbstract:Abstract Most birds possess a uropygial gland that produces a secretion, preen oil, that contains volatile compounds that may transmit information about individual attributes. However, the ability of passerine songbirds to discriminate among the Odors of different individuals has not yet been demonstrated. We tested whether dark-eyed juncos (Junco hyemalis) could discriminate among preen oil Odors from 1) conspecifics and heterospecifics; 2) male and female conspecifics; 3) conspecifics from same or different population or subspecies; and 4) males with large or small plumage ornaments. Our evidence suggests that juncos can discriminate between the odor of conspecifics and heterospecifics. In 2-way choice tests between conspecific Odors, both males and females spent more time with male preen oil. Subjects did not discriminate between Odors of individuals from their own population or a different one, and no relationship was found between choice and plumage ornaments. Unexpectedly, females spent more time with the odor of males with smaller body size, regardless of population of origin. This result was especially surprising because an analysis of preen oil volatile compounds revealed that the Odors of smaller males were less "male-like" than the Odors of larger males. We conclude that songbirds are able to detect Odors from preen oil as shown by their ability to distinguish Odors arising from males and females. They may also be able to distinguish among individuals of varying body size
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Intraspecific preen oil odor preferences in dark-eyed juncos (Junco hyemalis)
Behavioral Ecology, 2011Co-Authors: Danielle J Whittaker, Jonathan W. Atwell, Kaitlin M. Richmond, Allison K. Miller, Ryan P. Kiley, Christine M. Bergeon Burns, Ellen D. KettersonAbstract:Most birds possess a uropygial gland that produces a secretion, preen oil, that contains volatile compounds that may transmit information about individual attributes. However, the ability of passerine songbirds to discriminate among the Odors of different individuals has not yet been demonstrated. We tested whether dark-eyed juncos (Junco hyemalis) could discriminate among preen oil Odors from 1) conspecifics and heterospecifics; 2) male and female conspecifics; 3) conspecifics from same or different population or subspecies; and 4) males with large or small plumage ornaments. Our evidence suggests that juncos can discriminate between the odor of conspecifics and heterospecifics. In 2-way choice tests between conspecific Odors, both males and females spent more time with male preen oil. Subjects did not discriminate between Odors of individuals from their own population or a different one, and no relationship was found between choice and plumage ornaments. Unexpectedly, females spent more time with the odor of males with smaller body size, regardless of population of origin. This result was especially surprising because an analysis of preen oil volatile compounds revealed that the Odors of smaller males were less "male-like" than the Odors of larger males. We conclude that songbirds are able to detect Odors from preen oil as shown by their ability to distinguish Odors arising from males and females. They may also be able to distinguish among individuals of varying body size. Copyright 2011, Oxford University Press.
Danielle J Whittaker - One of the best experts on this subject based on the ideXlab platform.
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Intraspecific preen oil odor preferences in dark-eyed juncos (Junco hyemalis)
2020Co-Authors: Danielle J Whittaker, Jonathan W. Atwell, Kaitlin M. Richmond, Allison K. Miller, Ryan P. Kiley, Christine Bergeon Burns, Ellen D. KettersonAbstract:Abstract Most birds possess a uropygial gland that produces a secretion, preen oil, that contains volatile compounds that may transmit information about individual attributes. However, the ability of passerine songbirds to discriminate among the Odors of different individuals has not yet been demonstrated. We tested whether dark-eyed juncos (Junco hyemalis) could discriminate among preen oil Odors from 1) conspecifics and heterospecifics; 2) male and female conspecifics; 3) conspecifics from same or different population or subspecies; and 4) males with large or small plumage ornaments. Our evidence suggests that juncos can discriminate between the odor of conspecifics and heterospecifics. In 2-way choice tests between conspecific Odors, both males and females spent more time with male preen oil. Subjects did not discriminate between Odors of individuals from their own population or a different one, and no relationship was found between choice and plumage ornaments. Unexpectedly, females spent more time with the odor of males with smaller body size, regardless of population of origin. This result was especially surprising because an analysis of preen oil volatile compounds revealed that the Odors of smaller males were less "male-like" than the Odors of larger males. We conclude that songbirds are able to detect Odors from preen oil as shown by their ability to distinguish Odors arising from males and females. They may also be able to distinguish among individuals of varying body size
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Intraspecific preen oil odor preferences in dark-eyed juncos (Junco hyemalis)
Behavioral Ecology, 2011Co-Authors: Danielle J Whittaker, Jonathan W. Atwell, Kaitlin M. Richmond, Allison K. Miller, Ryan P. Kiley, Christine M. Bergeon Burns, Ellen D. KettersonAbstract:Most birds possess a uropygial gland that produces a secretion, preen oil, that contains volatile compounds that may transmit information about individual attributes. However, the ability of passerine songbirds to discriminate among the Odors of different individuals has not yet been demonstrated. We tested whether dark-eyed juncos (Junco hyemalis) could discriminate among preen oil Odors from 1) conspecifics and heterospecifics; 2) male and female conspecifics; 3) conspecifics from same or different population or subspecies; and 4) males with large or small plumage ornaments. Our evidence suggests that juncos can discriminate between the odor of conspecifics and heterospecifics. In 2-way choice tests between conspecific Odors, both males and females spent more time with male preen oil. Subjects did not discriminate between Odors of individuals from their own population or a different one, and no relationship was found between choice and plumage ornaments. Unexpectedly, females spent more time with the odor of males with smaller body size, regardless of population of origin. This result was especially surprising because an analysis of preen oil volatile compounds revealed that the Odors of smaller males were less "male-like" than the Odors of larger males. We conclude that songbirds are able to detect Odors from preen oil as shown by their ability to distinguish Odors arising from males and females. They may also be able to distinguish among individuals of varying body size. Copyright 2011, Oxford University Press.
Jane Plailly - One of the best experts on this subject based on the ideXlab platform.
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a unique memory process modulated by emotion underpins successful odor recognition and episodic retrieval in humans
Frontiers in Behavioral Neuroscience, 2014Co-Authors: Annelise Saive, Jean-pierre Royet, Nadine Ravel, Marc Thevenet, Samuel Garcia, Jane PlaillyAbstract:We behaviorally explore the link between olfaction, emotion and memory by testing the hypothesis that the emotion carried by Odors facilitates the memory of specific unique events. To investigate this idea, we used a novel behavioral approach inspired by a paradigm developed by our team to study episodic memory in a controlled and as ecological as possible way in humans. The participants freely explored three unique and rich laboratory episodes; each episode consisted of three unfamiliar Odors (What) positioned at three specific locations (Where) within a visual context (Which context). During the retrieval test, which occurred 24 to 72 hours after the encoding, Odors were used to trigger the retrieval of the complex episodes. The participants were proficient in recognizing the target Odors among distractors and retrieving the visuospatial context in which they were encountered. The episodic nature of the task generated high and stable memory performances, which were accompanied by faster responses and slower and deeper breathing. Successful odor recognition and episodic memory were not related to differences in odor investigation at encoding. However, memory performances were influenced by the emotional content of the Odors, regardless of odor valence, with both pleasant and unpleasant Odors generating higher recognition and episodic retrieval than neutral Odors. Finally, the present study also suggested that when the binding between the Odors and the spatio-contextual features of the episode was successful, the odor recognition and the episodic retrieval collapsed into a unique memory process that began as soon as the participants smelled the Odors.
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alliesthesia is greater for Odors of fatty foods than of non fat foods
Appetite, 2011Co-Authors: Jane Plailly, Ninhda Luangraj, Sophie Nicklaus, Jean-pierre Royet, Sylvie Issanchou, Claire SulmontrosseAbstract:Alliesthesia is the modulation of the rewarding value of a stimulus according to the internal state (hungry or satiated). This study aimed to evaluate this phenomenon as a function of the nature of the stimulus (Odors evoking edible and non-edible items, and the food Odors evoking fatty and non-fat foods) and to compare the effectiveness of two reward evaluations (measures of pleasantness and appetence) to reveal alliesthesia. The results showed that both fatty and non-fat food Odors were judged as less pleasant and less appetent when the subjects were satiated than when they were hungry, whereas no such difference was observed for non-food Odors. There was a greater decrease in appetence than there was in pleasantness. Moreover, the decrease in appetence was greater for fatty than for non-fat food Odors, whereas the decrease in pleasantness was similar for both fatty and non-fat food Odors. Our study allows for the definition of a more comprehensive pattern of alliesthesia based on odor category. It demonstrates that alliesthesia is specific to food Odors and that it is more pronounced when Odors are associated with fatty rather than non-fat foods. It also reveals that an appetence measure is more sensitive than a pleasantness measure for describing an acute reward modulation process.
Christoph Johannes Kleineidam - One of the best experts on this subject based on the ideXlab platform.
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Distributed representation of social Odors indicates parallel processing in the antennal lobe of ants
2016Co-Authors: Staetter T, Christoph Johannes KleineidamAbstract:noptera cooperation is organized through social Odors, and particu-larly ants rely on a sophisticated odor communication system. Neu-ronal information about Odors is represented in spatial activity pat-terns in the primary olfactory neuropile of the insect brain, the antennal lobe (AL), which is analog to the vertebrate olfactory bulb. The olfactory system is characterized by neuroanatomical compart-mentalization, yet the functional significance of this organization is unclear. Using two-photon calcium imaging, we investigated the neuronal representation of mUlticomponent colony Odors, which the ants assess to discriminate friends (nestmates) from foes (nonnest-mates). In the carpenter ant Campollotu,l ' floridanu.\', colony Odors elicited spatial activity patterns distributed across different AL com-partments. Activity patterns in response to nestmate and nonnestmate colony Odors were overlapping. This was expected since both consist of the same components at differing ratios. Colony Odors change ove
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Friends and Foes from an Ant Brain’s Point of View – Neuronal Correlates of Colony Odors in a Social Insect
2013Co-Authors: Wolfgang Rossler, Christoph Johannes KleineidamAbstract:Background: Successful cooperation depends on reliable identification of friends and foes. Social insects discriminate colony members (nestmates/friends) from foreign workers (non-nestmates/foes) by colony-specific, multi-component colony Odors. Traditionally, complex processing in the brain has been regarded as crucial for colony recognition. Odor information is represented as spatial patterns of activity and processed in the primary olfactory neuropile, the antennal lobe (AL) of insects, which is analogous to the vertebrate olfactory bulb. Correlative evidence indicates that the spatial activity patterns reflect odor-quality, i.e., how an odor is perceived. For colony Odors, alternatively, a sensory filter in the peripheral nervous system was suggested, causing specific anosmia to nestmate colony Odors. Here, we investigate neuronal correlates of colony Odors in the brain of a social insect to directly test whether they are anosmic to nestmate colony Odors and whether spatial activity patterns in the AL can predict how odor qualities like ‘‘friend’ ’ and ‘‘foe’ ’ are attributed to colony Odors. Methodology/Principal Findings: Using ant dummies that mimic natural conditions, we presented colony Odors and investigated their neuronal representation in the ant Camponotus floridanus. Nestmate and non-nestmate colony Odors elicited neuronal activity: In the periphery, we recorded sensory responses of olfactory receptor neurons (electroantennography), and in the brain, we measured colony odor specific spatial activity patterns in the AL (calcium imaging)
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friends and foes from an ant brain s point of view neuronal correlates of colony Odors in a social insect
PLOS ONE, 2011Co-Authors: Andreas Simon Brandstaetter, Wolfgang Rossler, Christoph Johannes KleineidamAbstract:Background: Successful cooperation depends on reliable identification of friends and foes. Social insects discriminate colony members (nestmates/friends) from foreign workers (non-nestmates/foes) by colony-specific, multi-component colony Odors. Traditionally, complex processing in the brain has been regarded as crucial for colony recognition. Odor information is represented as spatial patterns of activity and processed in the primary olfactory neuropile, the antennal lobe (AL) of insects, which is analogous to the vertebrate olfactory bulb. Correlative evidence indicates that the spatial activity patterns reflect odor-quality, i.e., how an odor is perceived. For colony Odors, alternatively, a sensory filter in the peripheral nervous system was suggested, causing specific anosmia to nestmate colony Odors. Here, we investigate neuronal correlates of colony Odors in the brain of a social insect to directly test whether they are anosmic to nestmate colony Odors and whether spatial activity patterns in the AL can predict how odor qualities like ‘‘friend’’ and ‘‘foe’’ are attributed to colony Odors. Methodology/Principal Findings: Using ant dummies that mimic natural conditions, we presented colony Odors and investigated their neuronal representation in the ant Camponotus floridanus. Nestmate and non-nestmate colony Odors elicited neuronal activity: In the periphery, we recorded sensory responses of olfactory receptor neurons (electroantennography), and in the brain, we measured colony odor specific spatial activity patterns in the AL (calcium imaging). Surprisingly, upon repeated stimulation with the same colony odor, spatial activity patterns were variable, and as variable as activity patterns elicited by different colony Odors. Conclusions: Ants are not anosmic to nestmate colony Odors. However, spatial activity patterns in the AL alone do not provide sufficient information for colony odor discrimination and this finding challenges the current notion of how odor quality is coded. Our result illustrates the enormous challenge for the nervous system to classify multi-component Odors and indicates that other neuronal parameters, e.g., precise timing of neuronal activity, are likely necessary for attribution of odor quality to multi-component Odors.
Robert E Johnston - One of the best experts on this subject based on the ideXlab platform.
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chemical communication in rodents from pheromones to individual recognition
Journal of Mammalogy, 2003Co-Authors: Robert E JohnstonAbstract:In many species of rodents, sense of smell is the most important source of information about the social and nonsocial world. I selectively review the literature on chemical communication in this group, primarily as studied in the laboratory. I start with a discussion of the term ‘‘pheromone,’’ the types of chemical signals, and the mechanisms underlying responses to chemical signals. I discuss the chemical complexity of Odors in rodents and the significance of multiple sources of Odors. Efforts to chemically identify signals are reviewed briefly; some progress, especially with domestic house mice ( Mus musculus domesticus), has been made, but new collaborations between chemists and biologists are needed. Three areas of current research are reviewed in detail: the role of the major histocompatibility complex in the production of body Odors and the role of these Odors in mate choice, the use of Odors in kin recognition, and the functions of scent overmarking.
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similarity in the qualities of individual Odors among kin and species in turkish mesocricetus brandti and golden mesocricetus auratus hamsters
Journal of Comparative Psychology, 1999Co-Authors: Giora Heth, Josephine Todrank, Robert E JohnstonAbstract:In this investigation, the authors used habituation techniques to explore similarities and differences in the qualities of individual Odors from hamsters. In Experiment 1, male Turkish hamsters (Mesocricetus brandti) treated flank-gland Odors of 2 males from 1 litter as similar compared with the odor of a male from another litter, whether the odor donors were familiar or unfamiliar. At the same time, the Turkish hamsters discriminated between the subtle differences in the individual Odors of their familiar brothers. In Experiment 2, male Turkish and golden hamsters (Mesocricetus auratus) treated the flank-gland Odors of 2 unfamiliar, unrelated conspecifics as similar compared with the flank odor of a heterospecific individual. The results suggest that similarities in individual Odors are related to genetic similarity of the odor donors. These similarities could provide a basis for different types of social recognition, including kin and species recognition.
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role of frontal cortex in social odor discrimination and scent marking in female golden hamsters mesocricetus auratus
Behavioral Neuroscience, 1998Co-Authors: Aras Petrulis, Ian Desouza, Marisa Schiller, Robert E JohnstonAbstract:Orbital/agranular insular (ORB/AI) cortex has been implicated in traditional olfactory learning tasks and social behavior but its precise role in discriminating-learning social Odors is not known. Female golden hamsters received aspiration lesions of ORB/AI or dorsomedial (DM) frontal cortex and were tested for their ability to (a) discriminate between Odors of individual males in a habituation-discrimination task, (b) show preferences for male over female Odors, and (c) scent-mark in response to male Odors. Lesioned females readily discriminated between scents of individual males. Neither lesion altered female preferences for male Odors. Females with DM lesions showed increased levels of scent marking to male Odors, but those with ORB/AI cortex lesions did not differ from controls. Thus, ORB/AI cortex does not appear to be critical for discrimination of Odors of individuals or sex or for scent-marking responses based on these discriminations.
