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Author |
Bouchard, J. |
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Title |
Is social learning correlated with innovation in birds? An inter-and an interspecific test |
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Manuscript |
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Year |
2002 |
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Department of Biology McGill University Montréal, Québec |
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Birds -- Behavior Birds -- Food Columba livia -- Behavior Columba livia -- Food Social learning |
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Abstract |
This thesis focuses on the relationship between innovation and social learning in the foraging context, across and within bird species, using two different sources of data: anecdotal reports from the literature, and experimental tests in the laboratory and the field. In chapter 1, I review the trends in innovation and social learning in the avian literature, and contrast them with trends in mammals, especially primates. In chapter 2, I use anecdotal reports of feeding innovation and social learning in the literature to assess taxonomic trends and to study the relationship between the two traits at the interspecific level. In chapter 3, I investigate the relationship between innovation and social learning at the intraspecific level in captive feral pigeons (Columba livia). Innovation is estimated from the ability to solve an innovative foraging problem, and social learning is measured as the number of trials required to learn a foraging task from a proficient demonstrator. (Abstract shortened by UMI.) |
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Master's thesis |
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Department of Biology McGili University Montréal, Québec |
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Equine Behaviour @ team @ |
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4785 |
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Author |
Barton, R.A. |
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Title |
Neocortex size and behavioural ecology in primates |
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Journal Article |
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Year |
1996 |
Publication |
Proceedings of the Royal Society B |
Abbreviated Journal |
Proc. R. Soc. Lond. B |
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Volume |
263 |
Issue |
1367 |
Pages |
173-177 |
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Keywords |
Animals; *Behavior, Animal; Brain/*anatomy & histology; Cerebral Cortex/*anatomy & histology/*physiology; *Ecology; Evolution; Primates/anatomy & histology/*physiology/psychology; Regression Analysis; Species Specificity |
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Abstract |
The neocortex is widely held to have been the focus of mammalian brain evolution, but what selection pressures explain the observed diversity in its size and structure? Among primates, comparative studies suggest that neocortical evolution is related to the cognitive demands of sociality, and here I confirm that neocortex size and social group size are positively correlated once phylogenetic associations and overall brain size are taken into account. This association holds within haplorhine but not strepsirhine primates. In addition, the neocortex is larger in diurnal than in nocturnal primates, and among diurnal haplorhines its size is positively correlated with the degree of frugivory. These ecological correlates reflect the diverse sensory-cognitive functions of the neocortex. |
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Department of Anthropology, University of Durham |
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0962-8452 |
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PMID:8728982 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4783 |
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Author |
Reboreda, J.C.; Clayton, N.S.; Kacelnik, A. |
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Title |
Species and sex differences in hippocampus size in parasitic and non-parasitic cowbirds |
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Journal Article |
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Year |
1996 |
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Neuroreport |
Abbreviated Journal |
Neuroreport |
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7 |
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2 |
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505-508 |
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Keywords |
Animals; Birds/*physiology; Female; Hippocampus/*anatomy & histology; Male; Nesting Behavior/*physiology; Sex Characteristics; Species Specificity; Telencephalon/anatomy & histology |
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Abstract |
To test the hypothesis that selection for spatial abilities which require birds to locate and to return accurately to host nests has produced an enlarged hippocampus in brood parasites, three species of cowbird were compared. In shiny cowbirds, females search for host nests without the assistance of the male; in screaming cowbirds, males and females inspect hosts' nests together; in bay-winged cowbirds, neither sex searches because this species is not a brood parasite. As predicted, the two parasitic species had a relatively larger hippocampus than the non-parasitic species. There were no sex differences in relative hippocampus size in screaming or bay-winged cowbirds, but female shiny cowbirds had a larger hippocampus than the male. |
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Instituto de Biologia y Medicina Experimental-CONICET, Buenos Aires, Argentina |
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0959-4965 |
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PMID:8730816 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4798 |
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Author |
Hothersall, B.; Nicol, C. |
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Title |
Role of Diet and Feeding in Normal and Stereotypic Behaviors in Horses |
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Journal Article |
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Year |
2009 |
Publication |
Veterinary Clinics of North America: Equine Practice |
Abbreviated Journal |
Clinical Nutrition |
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Volume |
25 |
Issue |
1 |
Pages |
167-181 |
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Keywords |
Equine behavior; Diet; Crib-biting; Stereotypy; Weaning; Tryptophan; Insulin |
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Abstract |
This article reviews the effects of diet on equine feeding behavior and feeding patterns, before considering the evidence that diet affects reactivity in horses. A growing body of work suggests that fat- and fiber-based diets may result in calmer patterns of behavior, and possible mechanisms that may underpin these effects are discussed. In contrast, there is little evidence that herbal- or tryptophan-containing supplements influence equine behavior in any measurable way. The role of diet in the development of abnormal oral behaviors, particularly the oral stereotypy crib-biting, is also reviewed, and suggestions for future work are presented. |
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0749-0739 |
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no |
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Equine Behaviour @ team @ |
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4945 |
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Author |
Schwab, C.; Huber, L. |
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Title |
Obey or not obey? Dogs (Canis familiaris) behave differently in response to attentional states of their owners |
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Journal Article |
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Year |
2006 |
Publication |
Journal of Comparative Psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
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Volume |
120 |
Issue |
3 |
Pages |
169-175 |
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Keywords |
Animals; *Attention; Awareness; *Bonding, Human-Pet; *Cooperative Behavior; Cues; Dogs/*psychology; Humans; Motivation; *Nonverbal Communication; Social Perception; *Speech Perception; *Verbal Behavior |
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Abstract |
Sixteen domestic dogs (Canis familiaris) were tested in a familiar context in a series of 1-min trials on how well they obeyed after being told by their owner to lie down. Food was used in 1/3 of all trials, and during the trial the owner engaged in 1 of 5 activities. The dogs behaved differently depending on the owner's attention to them. When being watched by the owner, the dogs stayed lying down most often and/or for the longest time compared with when the owner read a book, watched TV, turned his or her back on them, or left the room. These results indicate that the dogs sensed the attentional state of their owners by judging observable behavioral cues such as eye contact and eye, head, and body orientation. |
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Department for Behavior, Neurobiology and Cognition, University of Vienna, Vienna, Austria. cpriberskyschwab@yahoo.de |
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0735-7036 |
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Notes |
PMID:16893253 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4961 |
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Author |
Soproni, K.; Miklósi, Á.; Topál, J.; Csányi, V. |
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Title |
Dogs' (Canis familiaris) responsiveness to human pointing gestures |
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Journal Article |
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Year |
2002 |
Publication |
Journal of Comparative Psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
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Volume |
116 |
Issue |
1 |
Pages |
27-34 |
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Keywords |
Analysis of Variance; Animals; *Behavior, Animal; Choice Behavior; Dogs/*psychology; Female; Gestures; Male; *Recognition (Psychology); Species Specificity |
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Abstract |
In a series of 3 experiments, dogs (Canis familiaris) were presented with variations of the human pointing gesture: gestures with reversed direction of movement, cross-pointing, and different arm extensions. Dogs performed at above chance level if they could see the hand (and index finger) protruding from the human body contour. If these minimum requirements were not accessible, dogs still could rely on the body position of the signaler. The direction of movement of the pointing arm did not influence the performance. In summary, these observations suggest that dogs are able to rely on relatively novel gestural forms of the human communicative pointing gesture and that they are able to comprehend to some extent the referential nature of human pointing. |
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Department of Ethology, Eotvos Lorand University, Budapest, Hungary. krisztinasoproni@hotmail.com |
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0735-7036 |
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Notes |
PMID:11926681 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4962 |
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Author |
Soproni, K.; Miklósi, A.; Topál, J.; Csányi, V. |
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Title |
Comprehension of human communicative signs in pet dogs (Canis familiaris) |
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Journal Article |
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Year |
2001 |
Publication |
Journal of Comparative Psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
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115 |
Issue |
2 |
Pages |
122-126 |
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Keywords |
Animals; *Behavior, Animal; Choice Behavior; Dogs/*psychology; Female; Humans; Male; Nonverbal Communication/*psychology; *Recognition (Psychology); *Social Behavior |
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Abstract |
On the basis of a study by D. J. Povinelli, D. T. Bierschwale, and C. G. Cech (1999), the performance of family dogs (Canis familiaris) was examined in a 2-way food choice task in which 4 types of directional cues were given by the experimenter: pointing and gazing, head-nodding (“at target”), head turning above the correct container (“above target”), and glancing only (“eyes only”). The results showed that the performance of the dogs resembled more closely that of the children in D. J. Povinelli et al.'s study, in contrast to the chimpanzees' performance in the same study. It seems that dogs, like children, interpret the test situation as being a form of communication. The hypothesis is that this similarity is attributable to the social experience and acquired social routines in dogs because they spend more time in close contact with humans than apes do, and as a result dogs are probably more experienced in the recognition of human gestures. |
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Department of Ethology, Budapest, Hungary. lavina@ludens.elte.hu |
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0735-7036 |
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PMID:11459158 |
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no |
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Call Number |
Equine Behaviour @ team @ |
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4963 |
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Author |
Gácsi, M.; Kara, E.; Belényi, B.; Topál, J.; Miklósi, Á. |
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Title |
The effect of development and individual differences in pointing comprehension of dogs |
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Journal Article |
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2009 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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12 |
Issue |
3 |
Pages |
471-479 |
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Keywords |
Age Factors; Analysis of Variance; Animals; *Association Learning; Attention; Chi-Square Distribution; Choice Behavior; *Comprehension; *Concept Formation; Dogs/*psychology; Female; *Gestures; Humans; Male; Orientation; Statistics, Nonparametric |
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In spite of the rather different procedures actually used in comparative studies to test the ability of different species to rely on the human pointing gesture, there is no debate on the high performance of dogs in such tasks. Very little is known, however, on the course through which they acquire this ability or the probable factors influencing the process. Important developmental questions have remained unsolved and also some methodological concerns should be addressed before we can convincingly argue for one interpretation or another. In this study we tested 180 dogs of different age (from 2 months to adults) to investigate their performance in the human distal momentary pointing gesture. The results, analyzed at both the group and the individual levels, showed no difference in the performance according to age, indicating that in dogs the comprehension of the human pointing may require only very limited and rapid early learning to fully develop. Interestingly, neither the keeping conditions nor the time spent in active interaction with the owner, and not even some special (agility) training for using human visual cues, had significant effect on the success and explained individual differences. The performance of the dogs was rather stable over time: during the 20 trials within a session and even when subsamples of different age were repeatedly tested. Considering that in spite of the general success at the group level, more than half of the dogs were not successful at the individual level, we revealed alternative “decision-making rules” other than following the pointing gesture of the experimenter. |
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Department of Ethology, Eotvos University, Budapest, Hungary. gm.art@t-online.hu |
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1435-9456 |
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PMID:19130102 |
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no |
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Equine Behaviour @ team @ |
Serial |
4969 |
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Author |
Shapiro, A.D.; Janik, V.M.; Slater, P.J.B. |
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Title |
A gray seal's (Halichoerus grypus) responses to experimenter-given pointing and directional cues |
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Journal Article |
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Year |
2003 |
Publication |
Journal of Comparative Psychology |
Abbreviated Journal |
J Comp Psychol |
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117 |
Issue |
4 |
Pages |
355-362 |
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Animals; Behavior, Animal/*physiology; Cognition/physiology; Conditioning, Operant/physiology; *Cues; Eye Movements/physiology; Female; Seals, Earless |
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A gray seal (Halichoerus grypus) was trained to touch a target on its left or right by responding to pointing signals. The authors then tested whether the seal would be able to generalize spontaneously to altered signals. It responded correctly to center pointing and head turning, center upper body turning, and off-center pointing but not to head turning and eye movements alone. The seal also responded correctly to brief ipsilateral and contralateral points from center and lateral positions. Pointing gestures did not cause the seal to select an object placed centrally behind it. Like many animals in similar studies, this gray seal probably did not understand the referential character of these gestures but rather used signal generalization and experience from initial operant conditioning to solve these tasks. |
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School of Biology, University of St Andrews, St Andrews, Fife, United Kingdom |
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Washington, D.C. : 1983 |
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0735-7036 |
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PMID:14717636 |
Approved |
yes |
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Call Number |
Equine Behaviour @ team @ |
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4977 |
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Author |
Gosden, T. P.; Svensson, E. I. |
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Title |
Density-Dependent Male Mating Harassment, Female Resistance, and Male Mimicry |
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Journal Article |
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2009 |
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The American Naturalist |
Abbreviated Journal |
Am Nat |
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173 |
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6 |
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709-721 |
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tolerance, sexual conflict, path analysis, mating behavior, polymorphism, fecundity. |
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Abstract:
Genetic variation in female resistance and tolerance to male mating harassment can affect the outcome of sexually antagonistic mating interactions. We investigated female mating rates and male mating harassment in natural populations of a damselfly (Ischnura elegans). This damselfly species has a heritable sex‐limited polymorphism in females, where one of the morphs is a male mimic (androchrome females). The three female morphs differ in mating rates, and these differences are stable across populations and years. However, the degree of premating resistance toward male mating attempts varied across generations and populations. Male mating harassment of the female morphs changed in a density‐dependent fashion, suggesting that male mate preferences are plastic and vary with the different morph densities. We quantified morph differences in male mating harassment and female fecundity, using path analysis and structural equation modeling. We found variation between the morphs in the fitness consequences of mating, with the fecundity of one of the nonmimetic morphs declining with increasing male mating harassment. However, androchrome females had lower overall fecundity, presumably reflecting a cost of male mimicry. Density‐dependent male mating harassment on the morphs and fecundity costs of male mimicry are thus likely to contribute to the maintenance of this female polymorphism. |
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Equine Behaviour @ team @ |
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4999 |
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