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Author |
Palleroni, A.; Hauser, M.; Marler, P. |
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Title |
Do responses of galliform birds vary adaptively with predator size? |
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Journal Article |
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Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
8 |
Issue |
3 |
Pages |
200-210 |
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Keywords |
Adaptation, Psychological; Animals; *Avoidance Learning; *Behavior, Animal; Body Size; Chickens; Female; Food Chain; Male; *Pattern Recognition, Visual; *Predatory Behavior; *Recognition (Psychology); Risk Assessment |
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Abstract |
Past studies of galliform anti-predator behavior show that they discriminate between aerial and ground predators, producing distinctive, functionally referential vocalizations to each class. Within the category of aerial predators, however, studies using overhead models, video images and observations of natural encounters with birds of prey report little evidence that galliforms discriminate between different raptor species. This pattern suggests that the aerial alarm response may be triggered by general features of objects moving in the air. To test whether these birds are also sensitive to more detailed differences between raptor species, adult chickens with young were presented with variously sized trained raptors (small, intermediate, large) under controlled conditions. In response to the small hawk, there was a decline in anti-predator aggression and in aerial alarm calling as the young grew older and less vulnerable to attack by a hawk of this size. During the same developmental period, responses to the largest hawk, which posed the smallest threat to the young at all stages, did not change; there were intermediate changes at this time in response to the middle-sized hawk. Thus the anti-predator behavior of the adult birds varied in an adaptive fashion, changing as a function of both chick age and risk. We discuss these results in light of current issues concerning the cognitive mechanisms underlying alarm calling behavior in animals. |
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Primate Cognitive Neuroscience Laboratory, Department of Psychology, Harvard University, 33 Kirkland St., Cambridge, MA, 02138, USA. aliparti@wjh.harvard.edu |
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1435-9448 |
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PMID:15660209 |
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Equine Behaviour @ team @ |
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2496 |
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Author |
Zucca, P.; Antonelli, F.; Vallortigara, G. |
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Title |
Detour behaviour in three species of birds: quails (Coturnix sp.), herring gulls (Larus cachinnans) and canaries (Serinus canaria) |
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Journal Article |
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Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
8 |
Issue |
2 |
Pages |
122-128 |
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Keywords |
Animals; *Avoidance Learning; *Birds; Canaries; Charadriiformes; Coturnix; *Discrimination Learning; Orientation; *Space Perception; *Spatial Behavior; Species Specificity |
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Abstract |
Detour behaviour is the ability of an animal to reach a goal stimulus by moving round any interposed obstacle. It has been widely studied and has been proposed as a test of insight learning in several species of mammals, but few data are available in birds. A comparative study in three species of birds, belonging to different eco-ethological niches, allows a better understanding of the cognitive mechanism of such detour behaviour. Young quails (Coturnix sp.), herring gulls (Larus cachinnans) and canaries (Serinus canaria), 1 month old, 10-25 days old and 4-6 months old, respectively, were tested in a detour situation requiring them to abandon a clear view of a biologically interesting object (their own reflection in a mirror) in order to approach that object. Birds were placed in a closed corridor, at one end of which was a barrier through which the object was visible. Four different types of barrier were used: vertical bar, horizontal bar, grid and transparent. Two symmetrical apertures placed midline in the corridor allowed the birds to adopt routes passing around the barrier. After entering the apertures, birds could turn either right or left to re-establish social contact with the object in the absence of any local sensory cues emanating from it. Quails appeared able to solve the task, though their performance depended on the type of barrier used, which appeared to modulate their relative interest in approaching the object or in exploring the surroundings. Young herring gulls also showed excellent abilities to locate spatially the out-of-view object, except when the transparent barrier was used. Canaries, on the other hand, appeared completely unable to solve the detour task, whatever barrier was in use. It is suggested that these species differences can be accounted for in terms of adaptation to a terrestrial or aerial environment. |
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Laboratory of Animal Cognition and Comparative Neuroscience, Department of Psychology, University of Trieste, Via S. Anastasio 12, 34100, Trieste, Italy. zucca@units.it |
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1435-9448 |
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PMID:15449104 |
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Call Number |
Equine Behaviour @ team @ |
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2506 |
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Author |
Domjan, M. |
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Title |
Selective suppression of drinking during a limited period following aversive drug treatment in rats |
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Journal Article |
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Year |
1977 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
3 |
Issue |
1 |
Pages |
66-76 |
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Keywords |
Animals; *Avoidance Learning; Awareness; Conditioning, Operant; Dose-Response Relationship, Drug; Drinking Behavior/*drug effects; Lithium/*poisoning; Male; Osmolar Concentration; Rats; Saccharin/administration & dosage; *Taste; Time Factors |
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Abstract |
Administration of lithium chloride disrupted the intake of flavored solutions but not water in rats. This intake suppression was directly related to the amount of lithium administered (Experiment 1), occurred with both palatable and unpalatable novel saccharin solutions (Experiment 2), but was only observed if subjects were tested starting less than 75 min. after lithium treatment (Experiment 3). Twenty-five daily exposures to saccharin did not attenuate the effect (Experiment 4). However, in saccharin-reared and vinegar-reared rats, lithium did not disrupt consumption of the solutions these subjects had access to throughout life, even though suppressions of intake were observed when these subjects were tested with novel flavors (Experiment 5). The selective disruption of drinking is interpreted as a novelty-dependent sensitization reaction to the discomfort of aversive drug administration. |
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0097-7403 |
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PMID:845544 |
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Call Number |
Equine Behaviour @ team @ |
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2788 |
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Author |
Rudy, J.W.; Iwens, J.; Best, P.J. |
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Title |
Pairing novel exteroceptive cues and illness reduces illness-induced taste aversions |
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Journal Article |
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Year |
1977 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
3 |
Issue |
1 |
Pages |
14-25 |
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Keywords |
Animals; *Association; *Avoidance Learning; Awareness; Conditioning, Operant; *Cues; Drinking Behavior; Environment; Inhibition (Psychology); Lithium/poisoning; Male; Rats; Saccharin/pharmacology; *Taste |
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Four experiments are reported that lead to the conclusion that pairing novel exteroceptive stimulation (placement into a black compartment) with a poison (lithium chloride) attenuates the development of an aversion to a taste (saccharin) subsequently paired with the poison. Such an attenuation effect occurs whether the exteroceptive cues are present or absent when the taste-poison pairing is administered. Interpretation and implications of this finding are discussed. |
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0097-7403 |
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PMID:845542 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2789 |
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Author |
Mitchell, D.; Kirschbaum, E.H.; Perry, R.L. |
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Title |
Effects of neophobia and habituation on the poison-induced avoidance of exteroceptive stimuli in the rat |
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Journal Article |
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Year |
1975 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
1 |
Issue |
1 |
Pages |
47-55 |
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Keywords |
Animals; Avoidance Learning/*drug effects; *Awareness; *Cognition; Conditioning, Operant; Feeding Behavior/drug effects; *Habituation, Psychophysiologic; Injections, Intraperitoneal; Lithium/administration & dosage/poisoning; Male; Rats; *Taste; Time Factors; *Visual Perception |
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Two experiments on the role of neophobia in poison-induced aversions to exteroceptive stimuli are reported. In Experiment 1, rats were given either 10 or 25 days of habituation to the test situation prior to conditioning. Those animals with the longer habituation period avoided a complex of novel exteroceptive stimuli while those with the shorter habituation period did not. In Experiment 2 rats initially avoided the more novel of two containers, but gradually came to eat equal amounts from both. A single pairing of toxicosis with consumption from either the novel or the familiar container reinstated the avoidance of the novel container in both cases. The results were discussed in terms of an interaction between habituation and conditioning procedures. It was suggested that previously reported differences between interoceptive and exteroceptive conditioning effects may have been influenced by the differential novelty of the two classes of stimuli in the test situation. It was further suggested that non-contingently poisoned control groups should routinely be included in poison avoidance conditioning studies. |
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0097-7403 |
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PMID:1151289 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2791 |
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Author |
Sachs, E. |
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Title |
Dissociation of learning in rats and its similarities to dissociative states in man |
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Journal Article |
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Year |
1967 |
Publication |
Proceedings of the Annual Meeting of the American Psychopathological Association |
Abbreviated Journal |
Proc Annu Meet Am Psychopathol Assoc |
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55 |
Issue |
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Pages |
249-304 |
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Keywords |
Animals; Attention; Avoidance Learning; Chlorpromazine/pharmacology; Cognition; Conditioning (Psychology); Conflict (Psychology); *Dissociative Disorders; Fear; Humans; *Learning; Rats |
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0091-7389 |
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PMID:4862744 |
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Equine Behaviour @ team @ |
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2814 |
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Author |
Heffner, R.S.; Heffner, H.E. |
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Title |
Localization of tones by horses: use of binaural cues and the role of the superior olivary complex |
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Journal Article |
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Year |
1986 |
Publication |
Behavioral Neuroscience |
Abbreviated Journal |
Behav Neurosci |
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Volume |
100 |
Issue |
1 |
Pages |
93-103 |
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Keywords |
Animals; Auditory Pathways/physiology; Auditory Perception/*physiology; Avoidance Learning/physiology; Brain Mapping; Electroshock; Female; Horses/*physiology; Male; Olivary Nucleus/anatomy & histology/*physiology; Orientation/physiology; Pitch Perception/physiology; Sound Localization/*physiology |
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The ability of horses to use binaural time and intensity difference cues to localize sound was assessed in free-field localization tests by using pure tones. The animals were required to discriminate the locus of a single tone pip ranging in frequency from 250 Hz to 25 kHz emitted by loudspeakers located 30 degrees to the left and right of the animals' midline (60 degrees total separation). Three animals were tested with a two-choice procedure; 2 additional animals were tested with a conditioned avoidance procedure. All 5 animals were able to localize 250 Hz, 500 Hz, and 1 kHz but were completely unable to localize 2 kHz and above. Because the frequency of ambiguity for the binaural phase cue delta phi for horses in this test was calculated to be 1.5 kHz, these results indicate that horses can use binaural time differences in the form of delta phi but are unable to use binaural intensity differences. This finding was supported by an unconditioned orientation test involving 4 additional horses, which showed that horses correctly orient to a 500-Hz tone pip but not to an 8-kHz tone pip. Analysis of the superior olivary complex, the brain stem nucleus at which binaural interactions first take place, reveals that the lateral superior olive (LSO) is relatively small in the horse and lacks the laminar arrangement of bipolar cells characteristic of the LSO of most mammals that can use binaural delta I. |
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0735-7044 |
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PMID:3954885 |
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Equine Behaviour @ team @ |
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5634 |
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