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Author |
Ligout, S.; Porter, R.-H. |
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Title |
Social recognition in mammals: Mechanisms and sensorial bases |
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Journal Article |
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2006 |
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Productions Animales |
Abbreviated Journal |
Prod. Anim. |
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19 |
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2 |
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119-133 |
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Social recognition plays a major role in the mediation of interactions between individuals and the organisation of societies. During the last 20 years, numerous studies have investigated the adaptive significance, underlying mechanisms and sensory basis of individual recognition of kin as well as non-kin. The results indicate that the recognition of conspecifics involves complex, flexible processes that are widespread throughout the vertebrate kingdom. Such recognition can be based upon different mechanisms and sensory modalities, and influenced by diverse factors. Learned phenotypic traits of conspecifics through familiarisation, including oneself, is the fundamental mechanism implicated in recognition. Animals become directly familiar with others with which they interact. Moreover, kin of familiar conspecifics may be discriminated because of their resemblance to the known individuals. An animal's genotype and environmental variables may both contribute to its recognisable individual signatures (e.g. distinctive olfactory, visual, or auditory characteristics). In general, the study of social recognition enhances our understanding of the cognitive world of animals. |
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INRA, CNRS, UMR Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France |
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Export Date: 23 October 2008; Source: Scopus |
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yes |
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Call Number |
Equine Behaviour @ team @ |
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4568 |
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Author |
Ferrari, M.C.O.; Capitania-Kwok, T.; Chivers, D.P. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
The role of learning in the acquisition of threat-sensitive responses to predator odours |
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Journal Article |
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Year |
2006 |
Publication |
Behavioral Ecology and Sociobiology |
Abbreviated Journal |
Behav. Ecol. Sociobiol. |
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60 |
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4 |
Pages |
522-527 |
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The supposition that prey animals respond to a predator with an intensity that matches the risk posed by the predator is known as the threat-sensitive predator avoidance hypothesis. Many studies have provided support for this hypothesis; yet, few studies have attempted to determine how such abilities are acquired by prey species. In this study, we investigated whether fathead minnows (Pimephales promelas) could learn to recognize an unknown predator (northern pike, Esox lucius) in such a way that they could match the intensity of their antipredator response with the threat posed by the predator. We exposed pike-naive minnows to conspecific alarm cues paired with either a high or low concentration of pike odor. The following day, both groups were tested for a response to either high or low concentration of pike odor alone. We found that minnows conditioned with alarm cues paired with a given concentration of pike odor subsequently responded with a higher intensity to higher concentrations of pike odor, and with a lower intensity to lower concentrations of pike odor. These results demonstrate that during a single conditioning trial, minnows learn the identity of the predator in a threat-sensitive manner. Minnows use predator odor concentrations that they experience in subsequent interactions to adjust the intensity of their antipredator behavior. © Springer-Verlag 2006. |
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Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, Sask. S7N 5E2, Canada |
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Cited By (since 1996): 8; Export Date: 24 October 2008; Source: Scopus |
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Equine Behaviour @ team @ |
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4620 |
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Author |
Grinder, M.I.; Krausman, P.R.; Hoffmann, R.S. |
![goto web page (via DOI) doi](img/doi.gif)
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Equus asinus |
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Journal Article |
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2006 |
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Mammalian Species |
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794 |
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1 |
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1-9 |
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Equine Behaviour @ team @ |
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4633 |
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Author |
Pell, M.D. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Cerebral mechanisms for understanding emotional prosody in speech |
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Journal Article |
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Year |
2006 |
Publication |
Brain and Language |
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Volume |
96 |
Issue |
2 |
Pages |
221-234 |
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Keywords |
Emotion; Prosody; Speech; Laterality; Brain-damaged; Patient study; Sentence processing; Social cognitive neuroscience |
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Abstract |
Hemispheric contributions to the processing of emotional speech prosody were investigated by comparing adults with a focal lesion involving the right (n = 9) or left (n = 11) hemisphere and adults without brain damage (n = 12). Participants listened to semantically anomalous utterances in three conditions (discrimination, identification, and rating) which assessed their recognition of five prosodic emotions under the influence of different task- and response-selection demands. Findings revealed that right- and left-hemispheric lesions were associated with impaired comprehension of prosody, although possibly for distinct reasons: right-hemisphere compromise produced a more pervasive insensitivity to emotive features of prosodic stimuli, whereas left-hemisphere damage yielded greater difficulties interpreting prosodic representations as a code embedded with language content. |
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no |
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Equine Behaviour @ team @ |
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4637 |
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Author |
Sato, W.; Aoki, S. |
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Title |
Right hemispheric dominance in processing of unconscious negative emotion |
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Journal Article |
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Year |
2006 |
Publication |
Brain and Cognition |
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62 |
Issue |
3 |
Pages |
261-266 |
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Keywords |
Right hemispheric dominance; Unconscious negative emotion; Subliminal affective priming; Emotional facial expressions |
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Right hemispheric dominance in unconscious emotional processing has been suggested, but remains controversial. This issue was investigated using the subliminal affective priming paradigm combined with unilateral visual presentation in 40 normal subjects. In either left or right visual fields, angry facial expressions, happy facial expressions, or plain gray images were briefly presented as negative, positive, and control primes, followed by a mosaic mask. Then nonsense target ideographs were presented, and the subjects evaluated their partiality toward the targets. When the stimuli were presented in the left, but not the right, visual fields, the negative primes reduced the subjects' liking for the targets, relative to the case of the positive or control primes. These results provided behavioral evidence supporting the hypothesis that the right hemisphere is dominant for unconscious negative emotional processing. |
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no |
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Equine Behaviour @ team @ |
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4638 |
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Author |
Franks, N.R.; Richardson, T. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Teaching in tandem-running ants |
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Journal Article |
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Year |
2006 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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439 |
Issue |
7073 |
Pages |
153 |
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*Animal Communication; Animals; Ants/*physiology; Feedback/physiology; Learning/*physiology; *Teaching |
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The ant Temnothorax albipennis uses a technique known as tandem running to lead another ant from the nest to food--with signals between the two ants controlling both the speed and course of the run. Here we analyse the results of this communication and show that tandem running is an example of teaching, to our knowledge the first in a non-human animal, that involves bidirectional feedback between teacher and pupil. This behaviour indicates that it could be the value of information, rather than the constraint of brain size, that has influenced the evolution of teaching. |
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School of Biological Sciences, University of Bristol, Bristol BS8 IUG, UK. nigel.franks@bristol.ac.uk |
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English |
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1476-4687 |
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PMID:16407943 |
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no |
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Equine Behaviour @ team @ |
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4651 |
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Author |
Byrne, R.W.; Bates, L.A. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Why are animals cognitive? |
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Journal Article |
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Year |
2006 |
Publication |
Current Biology : CB |
Abbreviated Journal |
Curr Biol |
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16 |
Issue |
12 |
Pages |
R445-8 |
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Animals; Arachnida/physiology; *Association Learning; *Behavior, Animal; *Cognition; Cooperative Behavior; Falconiformes/physiology; Pan troglodytes/physiology; Parrots/physiology; Passeriformes/physiology |
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Centre for Social Learning and Cognitive Evolution, and Scottish Primate Research Group, School of Psychology, University of St Andrews, Fife KY16 9JP, Scotland |
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0960-9822 |
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PMID:16781995 |
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no |
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Equine Behaviour @ team @ |
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4708 |
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Author |
Holekamp, K.E. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Questioning the social intelligence hypothesis |
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Journal Article |
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Year |
2006 |
Publication |
Trends in Cognitive Sciences |
Abbreviated Journal |
Trends. Cognit. Sci. |
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11 |
Issue |
2 |
Pages |
65-69 |
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The social intelligence hypothesis posits that complex cognition and enlarged [`]executive brains' evolved in response to challenges that are associated with social complexity. This hypothesis has been well supported, but some recent data are inconsistent with its predictions. It is becoming increasingly clear that multiple selective agents, and non-selective constraints, must have acted to shape cognitive abilities in humans and other animals. The task now is to develop a larger theoretical framework that takes into account both inter-specific differences and similarities in cognition. This new framework should facilitate consideration of how selection pressures that are associated with sociality interact with those that are imposed by non-social forms of environmental complexity, and how both types of functional demands interact with phylogenetic and developmental constraints. |
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1364-6613 |
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no |
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Equine Behaviour @ team @ |
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4795 |
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Author |
Chaya, L.; Cowan, E.; McGuire, B. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
A note on the relationship between time spent in turnout and behaviour during turnout in horses (Equus caballus) |
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Journal Article |
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Year |
2006 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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98 |
Issue |
1-2 |
Pages |
155-160 |
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Horse; Behaviour; Turnout; Welfare |
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We examined if time spent in turnout influenced behaviour during turnout for horses maintained in stalls and given either 2 h/week (n = 7) or 12 h/week (n = 7) of turnout. Horses turned out for 2 h/week were more likely than those turned out for 12 h/week to trot, canter, and buck. Frequency of trotting and cantering was also higher and frequency of grazing lower in horses turned out for 2 h/week. These results have welfare implications and support previous studies showing that horses react to confinement with increased activity when not confined. |
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0168-1591 |
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no |
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Equine Behaviour @ team @ |
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4815 |
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Author |
Schiele, K. A. L. M. |
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Title |
Einfluss reduzierter Futterzuteilung zweier verschiedener Heuqualitäten auf Passagedauer und Verdaulichkeit bei Ponies |
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Manuscript |
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2006 |
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Über die Auswirkungen der Futtermenge und der Futterqualität auf die scheinbare
Verdaulichkeit und die mittlere Retentionszeit beim Pferd gibt es zahlreiche Arbeiten
mit zum Teil recht widersprüchlichen Ergebnissen. So existiert eine Hypothese,
wonach bei geringerer Energiedichte im Futter die TS-Aufnahme steigt und die
mittlere Retentionszeit abnimmt. Dadurch soll bei Equiden eine ausreichende
Energieaufnahme trotz geringer Energiedichte im Futter erreicht werden (JANIS
1976, DUNCAN et al.1990). In nahezu allen Studien zu diesem Thema wurden Futter
mit unterschiedlichem Nährstoffgehalt bei konstanter Futteraufnahme bzw. ad libitum
Fütterung untersucht. Nur bei PEARSON et al. (2001 und 2006) findet sich für jedes
Futter ein Vergleich von zwei verschiedenen Futtermengen, nämlich ad libitum und
70% der ad libitum Futteraufnahme. Systematische Untersuchungen bei Pferden zu
Futtermengen, die unterhalb des Erhaltungsbedarfes liegen, fehlen bisher.
In der vorliegenden Arbeit sollen deshalb im Wesentlichen drei Fragen geklärt
werden:
· Gibt es einen Einfluss von Futtermengen unterhalb des Erhaltungsbedarfes auf
die mittlere Retentionszeit?
· Haben Veränderungen der mittleren Retentionszeit einen Einfluss auf die
scheinbare Verdaulichkeit?
· Wie unterscheiden sich diese Effekte in Abhängigkeit von der
Futterzusammensetzung?
Die Ergebnisse dieser Studie sollen vor allem bezüglich ihrer Auswirkungen auf die
praktische Pferdefütterung betrachtet werden. |
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Doctoral thesis |
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Equine Behaviour @ team @ |
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4952 |
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