| Records |
| Author |
Hampton, R.R.; Sherry, D.F.; Shettleworth, S.J.; Khurgel, M.; Ivy, G. |
| Title |
Hippocampal volume and food-storing behavior are related in parids |
Type |
Journal Article |
| Year |
1995 |
Publication |
Brain, behavior and evolution |
Abbreviated Journal |
Brain Behav Evol |
| Volume |
45 |
Issue |
1 |
Pages |
54-61 |
| Keywords |
Animals; Appetitive Behavior/*physiology; Birds/*anatomy & histology; Brain Mapping; Evolution; Food Preferences/physiology; Hippocampus/*anatomy & histology; Mental Recall/*physiology; Orientation/*physiology; Predatory Behavior/physiology; Social Environment; Species Specificity |
| Abstract |
The size of the hippocampus has been previously shown to reflect species differences and sex differences in reliance on spatial memory to locate ecologically important resources, such as food and mates. Black-capped chickadees (Parus atricapillus) cached more food than did either Mexican chickadees (P. sclateri) or bridled titmice (P. wollweberi) in two tests of food storing, one conducted in an aviary and another in smaller home cages. Black-capped chickadees were also found to have a larger hippocampus, relative to the size of the telencephalon, than the other two species. Differences in the frequency of food storing behavior among the three species have probably produced differences in the use of hippocampus-dependent memory and spatial information processing to recover stored food, resulting in graded selection for size of the hippocampus. |
| Address |
Department of Psychology, University of Toronto, Ontario, Canada |
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| Language |
English |
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Series Issue |
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Edition |
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| ISSN |
0006-8977 |
ISBN |
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Conference |
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Notes  |
PMID:7866771 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
379 |
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| Author |
Seyfarth, R.M.; Cheney, D.L.; Marler, P. |
| Title |
Monkey responses to three different alarm calls: evidence of predator classification and semantic communication |
Type |
Journal Article |
| Year |
1980 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
210 |
Issue |
4471 |
Pages |
801-803 |
| Keywords |
*Animal Communication; Animals; Behavior, Animal/*physiology; Cercopithecidae/*physiology; *Fear; Female; Male; Predatory Behavior; Vocalization, Animal |
| Abstract |
Vervet monkeys give different alarm calls to different predators. Recordings of the alarms played back when predators were absent caused the monkeys to run into trees for leopard alarms, look up for eagle alarms, and look down for snake alarms. Adults call primarily to leopards, martial eagles, and pythons, but infants give leopard alarms to various mammals, eagle alarms to many birds, and snake alarms to various snakelike objects. Predator classification improves with age and experience. |
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English |
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Series Issue |
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Edition |
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| ISSN |
0036-8075 |
ISBN |
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Medium |
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| Notes |
PMID:7433999 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
351 |
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| Author |
Shettleworth, S.J. |
| Title |
Foraging, memory, and constraints on learning |
Type |
Journal Article |
| Year |
1985 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
| Volume |
443 |
Issue |
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Pages |
216-226 |
| Keywords |
Animals; Animals, Wild; *Appetitive Behavior; *Avoidance Learning; Birds; *Conditioning, Classical; Discrimination Learning; Food Preferences; *Memory; *Mental Recall; Motivation; *Predatory Behavior; Rats; *Taste |
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English |
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Series Title |
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Series Issue |
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Edition |
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| ISSN |
0077-8923 |
ISBN |
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Medium |
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| Notes |
PMID:3860072 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
384 |
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| Author |
Wolf, M.; van Doorn, G.S.; Leimar, O.; Weissing, F.J. |
| Title |
Life-history trade-offs favour the evolution of animal personalities |
Type |
Journal Article |
| Year |
2007 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
447 |
Issue |
7144 |
Pages |
581-584 |
| Keywords |
Aggression/physiology/psychology; Animals; Behavior, Animal/*physiology; *Evolution; Exploratory Behavior/physiology; Models, Biological; Personality/*physiology; Predatory Behavior/physiology; Reproduction/physiology; Risk-Taking; Selection (Genetics) |
| Abstract |
In recent years evidence has been accumulating that personalities are not only found in humans but also in a wide range of other animal species. Individuals differ consistently in their behavioural tendencies and the behaviour in one context is correlated with the behaviour in multiple other contexts. From an adaptive perspective, the evolution of animal personalities is still a mystery, because a more flexible structure of behaviour should provide a selective advantage. Accordingly, many researchers view personalities as resulting from constraints imposed by the architecture of behaviour (but see ref. 12). In contrast, we show here that animal personalities can be given an adaptive explanation. Our argument is based on the insight that the trade-off between current and future reproduction often results in polymorphic populations in which some individuals put more emphasis on future fitness returns than others. Life-history theory predicts that such differences in fitness expectations should result in systematic differences in risk-taking behaviour. Individuals with high future expectations (who have much to lose) should be more risk-averse than individuals with low expectations. This applies to all kinds of risky situations, so individuals should consistently differ in their behaviour. By means of an evolutionary model we demonstrate that this basic principle results in the evolution of animal personalities. It simultaneously explains the coexistence of behavioural types, the consistency of behaviour through time and the structure of behavioural correlations across contexts. Moreover, it explains the common finding that explorative behaviour and risk-related traits like boldness and aggressiveness are common characteristics of animal personalities. |
| Address |
Theoretical Biology Group, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9751 NN Haren, The Netherlands |
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English |
Summary Language |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1476-4687 |
ISBN |
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Medium |
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Conference |
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| Notes |
PMID:17538618 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4098 |
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| Author |
Heinrich, B.; Bugnyar, T. |
| Title |
Just how smart are ravens? |
Type |
Journal Article |
| Year |
2007 |
Publication |
Scientific American |
Abbreviated Journal |
Sci Am |
| Volume |
296 |
Issue |
4 |
Pages |
64-71 |
| Keywords |
Animals; *Behavior, Animal; Crows/*physiology; Environment; *Intelligence; Predatory Behavior; Problem Solving; Thinking |
| Abstract |
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| Address |
University of Vermont, USA |
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Place of Publication |
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English |
Summary Language |
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Original Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0036-8733 |
ISBN |
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Medium |
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Conference |
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| Notes |
PMID:17479632 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
4101 |
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| Author |
Hirsch, B.T. |
| Title |
Costs and benefits of within-group spatial position: a feeding competition model |
Type |
Journal Article |
| Year |
2007 |
Publication |
The Quarterly review of biology |
Abbreviated Journal |
Q Rev Biol |
| Volume |
82 |
Issue |
1 |
Pages |
9-27 |
| Keywords |
Animals; Competitive Behavior/*physiology; Dominance-Subordination; Feeding Behavior/*physiology/*psychology; Population Dynamics; Predatory Behavior/*physiology |
| Abstract |
An animal's within-group spatial position has several important fitness consequences. Risk of predation, time spent engaging in antipredatory behavior and feeding competition can all vary with respect to spatial position. Previous research has found evidence that feeding rates are higher at the group edge in many species, but these studies have not represented the entire breadth of dietary diversity and ecological situations faced by many animals. In particular the presence of concentrated, defendable food patches can lead to increased feeding rates by dominants in the center of the group that are able to monopolize or defend these areas. To fully understand the tradeoffs of within-group spatial position in relation to a variety of factors, it is important to be able to predict where individuals should preferably position themselves in relation to feeding rates and food competition. A qualitative model is presented here to predict how food depletion time, abundance of food patches within a group, and the presence of prior knowledge of feeding sites affect the payoffs of different within-group spatial positions for dominant and subordinate animals. In general, when feeding on small abundant food items, individuals at the front edge of the group should have higher foraging success. When feeding on slowly depleted, rare food items, dominants will often have the highest feeding rates in the center of the group. Between these two extreme points of a continuum, an individual's optimal spatial position is predicted to be influenced by an additional combination of factors, such as group size, group spread, satiation rates, and the presence of producer-scrounger tactics. |
| Address |
Department of Anthropology, Stony Brook University Stony Brook, New York 11794, USA. BTHIRSCH@IC.SUNYSB.EDU |
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English |
Summary Language |
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Abbreviated Series Title |
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Edition |
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| ISSN |
0033-5770 |
ISBN |
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Medium |
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Conference |
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| Notes |
PMID:17354992 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
803 |
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| Author |
Thornton, A.; McAuliffe, K. |
| Title |
Teaching in wild meerkats |
Type |
Journal Article |
| Year |
2006 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
| Volume |
313 |
Issue |
5784 |
Pages |
227-229 |
| Keywords |
Animals; *Animals, Wild/psychology; Behavior, Animal; *Herpestidae/psychology; *Learning; *Predatory Behavior; South Africa; *Teaching; Vocalization, Animal |
| Abstract |
Despite the obvious benefits of directed mechanisms that facilitate the efficient transfer of skills, there is little critical evidence for teaching in nonhuman animals. Using observational and experimental data, we show that wild meerkats (Suricata suricatta) teach pups prey-handling skills by providing them with opportunities to interact with live prey. In response to changing pup begging calls, helpers alter their prey-provisioning methods as pups grow older, thus accelerating learning without the use of complex cognition. The lack of evidence for teaching in species other than humans may reflect problems in producing unequivocal support for the occurrence of teaching, rather than the absence of teaching. |
| Address |
Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. jant2@cam.ac.uk |
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English |
Summary Language |
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Series Issue |
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Edition |
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| ISSN |
1095-9203 |
ISBN |
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Expedition |
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Conference |
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| Notes |
PMID:16840701 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2834 |
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| Author |
Arnold, K.; Zuberbuhler, K. |
| Title |
Language evolution: semantic combinations in primate calls |
Type |
Journal Article |
| Year |
2006 |
Publication |
Nature |
Abbreviated Journal |
Nature |
| Volume |
441 |
Issue |
7091 |
Pages |
303 |
| Keywords |
Animal Migration; Animals; Eagles/physiology; *Evolution; Female; Haplorhini/*physiology; Male; Predatory Behavior; *Semantics; *Vocalization, Animal |
| Abstract |
Syntax sets human language apart from other natural communication systems, although its evolutionary origins are obscure. Here we show that free-ranging putty-nosed monkeys combine two vocalizations into different call sequences that are linked to specific external events, such as the presence of a predator and the imminent movement of the group. Our findings indicate that non-human primates can combine calls into higher-order sequences that have a particular meaning. |
| Address |
School of Psychology, University of St Andrews, St Andrews KY16 9JP, UK |
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Place of Publication |
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English |
Summary Language |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
1476-4687 |
ISBN |
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Conference |
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| Notes |
PMID:16710411 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
354 |
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| Author |
Ratcliffe, J.M.; Fenton, M.B.; Shettleworth, S.J. |
| Title |
Behavioral flexibility positively correlated with relative brain volume in predatory bats |
Type |
Journal Article |
| Year |
2006 |
Publication |
Brain, behavior and evolution |
Abbreviated Journal |
Brain Behav Evol |
| Volume |
67 |
Issue |
3 |
Pages |
165-176 |
| Keywords |
Adaptation, Psychological; Animals; Behavior, Animal/*physiology; Brain/*anatomy & histology/physiology; Chiroptera/*anatomy & histology/*physiology; Organ Size; Predatory Behavior/*physiology |
| Abstract |
We investigated the potential relationships between foraging strategies and relative brain and brain region volumes in predatory (animal-eating) echolocating bats. The species we considered represent the ancestral state for the order and approximately 70% of living bat species. The two dominant foraging strategies used by echolocating predatory bats are substrate-gleaning (taking prey from surfaces) and aerial hawking (taking airborne prey). We used species-specific behavioral, morphological, and ecological data to classify each of 59 predatory species as one of the following: (1) ground gleaning, (2) behaviorally flexible (i.e., known to both glean and hawk prey), (3) clutter tolerant aerial hawking, or (4) open-space aerial hawking. In analyses using both species level data and phylogenetically independent contrasts, relative brain size was larger in behaviorally flexible species. Further, relative neocortex volume was significantly reduced in bats that aerially hawk prey primarily in open spaces. Conversely, our foraging behavior index did not account for variability in hippocampus and inferior colliculus volume and we discuss these results in the context of past research. |
| Address |
Department of Zoology, University of Toronto, Toronto, Canada. jmr247@cornell.edu |
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English |
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Series Issue |
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Edition |
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| ISSN |
0006-8977 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:16415571 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
358 |
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| Author |
Reid, P.J.; Shettleworth, S.J. |
| Title |
Detection of cryptic prey: search image or search rate? |
Type |
Journal Article |
| Year |
1992 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
18 |
Issue |
3 |
Pages |
273-286 |
| Keywords |
Animals; Appetitive Behavior; *Attention; Color Perception; Columbidae; *Discrimination Learning; Food Preferences/psychology; *Imagination; *Mental Recall; *Predatory Behavior |
| Abstract |
Animals' improvement in capturing cryptic prey with experience has long been attributed to a perceptual mechanism, the specific search image. Detection could also be improved by adjusting rate of search. In a series of studies using both naturalistic and operant search tasks, pigeons searched for wheat, dyed to produce 1 conspicuous and 2 equally cryptic prey types. Contrary to the predictions of the search-rate hypothesis, pigeons given a choice between the 2 cryptic types took the type experienced most recently. However, experience with 1 cryptic type improved accuracy on the other cryptic type, a result inconsistent with a search image specific to 1 prey type. Search image may better be thought of as priming of attention to those features of the prey type that best distinguish the prey from the background. |
| Address |
University of Toronto, Ontario, Canada |
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English |
Summary Language |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0097-7403 |
ISBN |
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Conference |
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| Notes |
PMID:1619395 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
381 |
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