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| Author | Sebilo, M.; Mayer, B.; Nicolardot, B.; Pinay, G.; Mariotti, A. | ||||
| Title | Long-term fate of nitrate fertilizer in agricultural soils | Type | Journal Article | ||
| Year | 2013 | Publication | Proceedings of the National Academy of Sciences | Abbreviated Journal | PNAS |
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| Abstract | Increasing diffuse nitrate loading of surface waters and groundwater has emerged as a major problem in many agricultural areas of the world, resulting in contamination of drinking water resources in aquifers as well as eutrophication of freshwaters and coastal marine ecosystems. Although empirical correlations between application rates of N fertilizers to agricultural soils and nitrate contamination of adjacent hydrological systems have been demonstrated, the transit times of fertilizer N in the pedosphere–hydrosphere system are poorly understood. We investigated the fate of isotopically labeled nitrogen fertilizers in a three–decade-long in situ tracer experiment that quantified not only fertilizer N uptake by plants and retention in soils, but also determined to which extent and over which time periods fertilizer N stored in soil organic matter is rereleased for either uptake in crops or export into the hydrosphere. We found that 61–65% of the applied fertilizers N were taken up by plants, whereas 12–15% of the labeled fertilizer N were still residing in the soil organic matter more than a quarter century after tracer application. Between 8–12% of the applied fertilizer had leaked toward the hydrosphere during the 30-y observation period. We predict that additional exports of 15N-labeled nitrate from the tracer application in 1982 toward the hydrosphere will continue for at least another five decades. Therefore, attempts to reduce agricultural nitrate contamination of aquatic systems must consider the long-term legacy of past applications of synthetic fertilizers in agricultural systems and the nitrogen retention capacity of agricultural soils. | ||||
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| Call Number | Equine Behaviour @ team @ | Serial | 5730 | ||
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| Author | Ferrero, D.M.; Moeller, L.M.; Osakada, T.; Horio, N.; Li, Q.; Roy, D.S.; Cichy, A.; Spehr, M.; Touhara, K.; Liberles, S.D. | ||||
| Title | A juvenile mouse pheromone inhibits sexual behaviour through the vomeronasal system | Type | Journal Article | ||
| Year | 2013 | Publication | Abbreviated Journal | Nature | |
| Volume | 502 | Issue | 7471 | Pages | 368-371 |
| Keywords | Pheromone Olfactory receptors | ||||
| Abstract | Animals display a repertoire of different social behaviours. Appropriate behavioural responses depend on sensory input received during social interactions. In mice, social behaviour is driven by pheromones, chemical signals that encode information related to age, sex and physiological state1. However, although mice show different social behaviours towards adults, juveniles and neonates, sensory cues that enable specific recognition of juvenile mice are unknown. Here we describe a juvenile pheromone produced by young mice before puberty, termed exocrine-gland secreting peptide 22 (ESP22). ESP22 is secreted from the lacrimal gland and released into tears of 2- to 3-week-old mice. Upon detection, ESP22 activates high-affinity sensory neurons in the vomeronasal organ, and downstream limbic neurons in the medial amygdala. Recombinant ESP22, painted on mice, exerts a powerful inhibitory effect on adult male mating behaviour, which is abolished in knockout mice lacking TRPC2, a key signalling component of the vomeronasal organ2, 3. Furthermore, knockout of TRPC2 or loss of ESP22 production results in increased sexual behaviour of adult males towards juveniles, and sexual responses towards ESP22-deficient juveniles are suppressed by ESP22 painting. Thus, we describe a pheromone of sexually immature mice that controls an innate social behaviour, a response pathway through the accessory olfactory system and a new role for vomeronasal organ signalling in inhibiting sexual behaviour towards young. These findings provide a molecular framework for understanding how a sensory system can regulate behaviour. | ||||
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| Publisher | Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. | Place of Publication | Editor | ||
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| ISSN | 0028-0836 | ISBN | Medium | ||
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Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5732 | ||
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| Author | Siniscalchi, M.; Lusito, R.; Vallortigara, G.; Quaranta, A. | ||||
| Title | Seeing Left- or Right-Asymmetric Tail Wagging Produces Different Emotional Responses in Dogs | Type | Journal Article | ||
| Year | 2013 | Publication | Current Biology | Abbreviated Journal | Curr Biol |
| Volume | 23 | Issue | 22 | Pages | |
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| Abstract | Summary Left-right asymmetries in behavior associated with asymmetries in the brain are widespread in the animal kingdom [1], and the hypothesis has been put forward that they may be linked to animals’ social behavior [2, 3]. Dogs show asymmetric tail-wagging responses to different emotive stimuli [4]—the outcome of different activation of left and right brain structures controlling tail movements to the right and left side of the body. A crucial question, however, is whether or not dogs detect this asymmetry. Here we report that dogs looking at moving video images of conspecifics exhibiting prevalent left- or right-asymmetric tail wagging showed higher cardiac activity and higher scores of anxious behavior when observing left- rather than right-biased tail wagging. The finding that dogs are sensitive to the asymmetric tail expressions of other dogs supports the hypothesis of a link between brain asymmetry and social behavior and may prove useful to canine animal welfare theory and practice. | ||||
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| ISSN | 0960-9822 | ISBN | Medium | ||
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Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5734 | ||
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| Author | Valenchon, M.; Lévy, F.; Górecka-Bruzda, A.; Calandreau, L.; Lansade, L. | ||||
| Title | Characterization of long-term memory, resistance to extinction, and influence of temperament during two instrumental tasks in horses | Type | Journal Article | ||
| Year | 2013 | Publication | Abbreviated Journal | Animal Cognition | |
| Volume | 16 | Issue | 6 | Pages | 1001-1006 |
| Keywords | Personality; Learning; Individuality; Fearfulness; Equid; Cognitive flexibility | ||||
| Abstract | The present study investigated the influence of temperament on long-term recall and extinction of 2 instrumental tasks in 26 horses. In the first task (backward task), horses learned to walk backward, using commands given by an experimenter, in order to obtain a food reward. In the second task (active avoidance task), horses had to cross an obstacle after a bell rang in order to avoid emission of an air puff. Twenty-two months after acquisition, horses exhibited perfect recall performance in both tasks. Accordingly, no influence of temperament on recall performance could be observed for either task. In contrast, in the absence of positive or negative outcomes, the horses’ ability to extinguish their response to either task was highly variable. Resistance to extinction was related to some indicators of temperament: The most fearful horses tended to be the most resistant to extinction in the backward task, while the least sensitive horses tended to be the most resistant to extinction in the active avoidance task. These findings reveal extensive long-term memory abilities in horses and suggest an influence of temperament on learning processes other than acquisition. | ||||
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| Publisher | Springer Berlin Heidelberg | Place of Publication | Editor | ||
| Language | English | Summary Language | Original Title | ||
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| ISSN | 1435-9448 | ISBN | Medium | ||
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Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5735 | ||
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| Author | Fürst, A. | ||||
| Title | Haltungsbedingte Erkrankungen und Verletzungen des Pferdes: Vor- und Nachteile der verschiedenen Haltungssystemen aus medizinischer Sicht | Type | Manuscript | ||
| Year | 2013 | Publication | Abbreviated Journal | ||
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Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5757 | ||
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| Author | Pedersen, E.J.; Kurzban, R.; McCullough, M.E. | ||||
| Title | Do humans really punish altruistically? A closer look | Type | Journal Article | ||
| Year | 2013 | Publication | Proceedings of the Royal Society B: Biological Sciences | Abbreviated Journal | Proc. R. Soc. Lond. B |
| Volume | 280 | Issue | 1758 | Pages | |
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| Abstract | Some researchers have proposed that natural selection has given rise in humans to one or more adaptations for altruistically punishing on behalf of other individuals who have been treated unfairly, even when the punisher has no chance of benefiting via reciprocity or benefits to kin. However, empirical support for the altruistic punishment hypothesis depends on results from experiments that are vulnerable to potentially important experimental artefacts. Here, we searched for evidence of altruistic punishment in an experiment that precluded these artefacts. In so doing, we found that victims of unfairness punished transgressors, whereas witnesses of unfairness did not. Furthermore, witnesses’ emotional reactions to unfairness were characterized by envy of the unfair individual's selfish gains rather than by moralistic anger towards the unfair behaviour. In a second experiment run independently in two separate samples, we found that previous evidence for altruistic punishment plausibly resulted from affective forecasting error—that is, limitations on humans’ abilities to accurately simulate how they would feel in hypothetical situations. Together, these findings suggest that the case for altruistic punishment in humans—a view that has gained increasing attention in the biological and social sciences—has been overstated. | ||||
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Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5804 | ||
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| Author | Freidin, E.; Putrino, N.; D’Orazio, M.; Bentosela, M. | ||||
| Title | Dogs’ Eavesdropping from People’s Reactions in Third Party Interactions | Type | Journal Article | ||
| Year | 2013 | Publication | PLoS ONE | Abbreviated Journal | PLoS ONE |
| Volume | 8 | Issue | 11 | Pages | e79198 EP - |
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| Abstract | <p>Eavesdropping involves the acquisition of information from third-party interactions, and can serve to indirectly attribute reputation to individuals. There is evidence on eavesdropping in dogs, indicating that they can develop a preference for people based on their cooperativeness towards others. In this study, we tested dogs’ eavesdropping abilities one step further. In a first experiment, dogs could choose between cooperative demonstrators (the donors) who always gave food to an approaching third person (the beggar); here, the only difference between donors was whether they received positive or negative reactions from the beggar (through verbal and gestural means). Results showed that dogs preferentially approached the donor who had received positive reactions from the beggar. By contrast, two different conditions showed that neither the beggar’s body gestures nor the verbal component of the interaction on their own were sufficient to affect the dogs’ preferences. We also ran two further experiments to test for the possibility of dogs’ choices being driven by local enhancement. When the donors switched places before the choice, dogs chose at random. Similarly, in a nonsocial condition in which donors were replaced by platforms, subjects chose at chance levels. We conclude that dogs’ nonrandom choices in the present protocol relied on the simultaneous presence of multiple cues, such as the place where donors stood and several features of the beggar’s behavior (gestural and verbal reactions, and eating behavior). Nonetheless, we did not find conclusive evidence that dogs discriminated the donors by their physical features, which is a prerequisite of reputation attribution.</p> | ||||
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| Publisher | Public Library of Science | Place of Publication | Editor | ||
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Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5807 | ||
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| Author | Leblanc, M.-A. | ||||
| Title | The mind of the horse, An Introduction to Equine Cognition | Type | Book Whole | ||
| Year | 2013 | Publication | Abbreviated Journal | ||
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| Abstract | Horses were first domesticated about 6,000 years ago on the vast Eurasian steppe extending from Mongolia to the Carpathian Mountains. Yet only in the last two decades have scientists begun to explore the specific mental capacities of these animals. Responding to a surge of interest in fields from ethology to comparative psychology and evolutionary biology, Michel-Antoine Leblanc presents an encyclopedic synthesis of scientific knowledge about equine behavior and cognition. The Mind of the Horse provides experts and enthusiasts alike with an up-to-date understanding of how horses perceive, think about, and adapt to their physical and social worlds. Much of what we know—or think we know—about “the intelligence of the horse” derives from fragmentary reports and anecdotal evidence. Putting this accumulated wisdom to the test, Leblanc introduces readers to rigorous experimental investigations into how horses make sense of their world under varying conditions. He describes the anatomical and neurophysiological characteristics of the horse’s brain, and offers an evolutionary perspective by comparing these features with those of other species. A horseman himself, Leblanc also considers the opinions of renowned riding masters, as well as controversies surrounding the extraordinary powers of the horse’s mind that have stirred in equestrian and scientific circles. Although scientists understand more today about how horses think than at any time in our species’ long acquaintance with these animals, much remains in the dark. The Mind of the Horse brings together the current state of equine research and will likely stimulate surprising new discoveries. |
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| Publisher | Harvard University Press | Place of Publication | Harvard, MA | Editor | |
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| ISSN | ISBN | 9780674724969 | Medium | ||
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Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5827 | ||
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| Author | Siniscalchi, M.; McFarlane, J.R.; Kauter, K.G.; Quaranta, A.; Rogers, L.J. | ||||
| Title | Cortisol levels in hair reflect behavioural reactivity of dogs to acoustic stimuli | Type | Journal Article | ||
| Year | 2013 | Publication | Research in Veterinary Science | Abbreviated Journal | |
| Volume | 94 | Issue | 1 | Pages | 49-54 |
| Keywords | Dogs; Behaviour; Cortisol; Hair; Acoustic stimuli | ||||
| Abstract | Cortisol levels in hair samples were examined in fourteen domestic dogs and related to the dogs’ responses to different acoustic stimuli. Stimuli were playbacks of species-typical vocalizations recorded during three different situations (“disturbance”, “isolation” and “play” barks) and the sounds of a thunderstorm. Hair samples were collected at 9:00 h and 17:00 h two weeks after the behavioural tests. Results showed that behavioural reactivity to playback of the various stimuli correlates with cortisol levels in hair samples collected at 9:00 h, and the same was the case for the separate measures of behaviour (i.e. hiding, running away, seeking attention from the tester, panting and lowering of the body posture). Hence, levels of cortisol in hair appear to reflect the dog’s chronic state of emotional reactivity, or temperament. | ||||
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| ISSN | 0034-5288 | ISBN | Medium | ||
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Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5833 | ||
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| Author | Graf, P.; König von Borstel, U.; Gauly, M. | ||||
| Title | Importance of personality traits in horses to breeders and riders | Type | Journal Article | ||
| Year | 2013 | Publication | Journal of Veterinary Behavior: Clinical Applications and Research | Abbreviated Journal | |
| Volume | 8 | Issue | 5 | Pages | 316-325 |
| Keywords | survey; personality; temperament; horse; rider; breeder | ||||
| Abstract | Abstract Especially in horses, personality traits play an important role because horses' behavior influences their quality as a riding partner. In contrast to that, no objective assessment of horses' personality traits is available at present. Although initial efforts are made in this field, a successful implementation of behavior tests into horse performance tests depends on the acceptance of the riders and breeders. Therefore, the aim of the present study was to assess the importance of personality traits to breeders and riders as well as the degree of riders' acceptance of a temperament test as a more objective means of assessing equine personality traits. Using a web-based survey consisting of a 41-item questionnaire, a total of 1087 competition riders (49.3%), breeders (39.0%), leisure riders (37.9%), and professional riders (8.6%) of 13 countries were recruited to participate in the survey. When asked to split 1000 Euro among the different traits listed in the breeding goal, respondents clearly assigned more weight to the personality-related character and temperament traits (least squares mean ± standard error; P < 0.005: €228.7 ± 17.6) and willingness to work (€123.0 ± 9.6) compared with performance traits, such as the quality of trot (€77.7 ± 6.9) or show jumping (€68.0 ± 12.3). Nevertheless, expected differences in relative weighting of traits between the different groups of riders were confirmed (e.g., character and temperament: €209.3 ± 6.1 [leisure riders] vs. €149.7 ± 5.4 [competition riders], P < 0.0001). When asking why personality traits are so important, the simplification of daily work with the horses (47.9%) and relationship between horse and human (44.9%) as well as a more comfortable and safer handling (31.5%) were most commonly listed. As much as 45.6% of all participants see quality problems with the current assessment and suggested the evaluation of all breeding animals (30.1%), followed by a better standardization of assessment procedures (25.5%) and a move to more objective criteria such as the introduction of a temperament test (20.3%) for solving the problems. The present survey revealed that behavior traits are very important to all groups of riders and breeders, although there are diverse opinions about it. According to the participants, there is a need for and a high potential in the move toward more objective assessment methods of horses' personality traits, and participants would support a restructuring of the current assessment. | ||||
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| ISSN | 1558-7878 | ISBN | Medium | ||
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Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5865 | ||
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