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Author |
Isenbugel, E. |
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Title |
[From wild horse to riding horse] |
Type |
Journal Article |
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Year |
2002 |
Publication |
Schweizer Archiv fur Tierheilkunde |
Abbreviated Journal |
Schweiz Arch Tierheilkd |
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Volume |
144 |
Issue |
7 |
Pages |
323-329 |
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Keywords |
Animal Husbandry/*history; Animals; Animals, Domestic; Animals, Wild; *Bonding, Human-Pet; Breeding/history; Evolution; Female; History, 15th Century; History, 16th Century; History, 17th Century; History, 18th Century; History, 19th Century; History, 20th Century; History, Ancient; History, Medieval; *Horses/physiology/psychology; Humans; Male; Paintings; Predatory Behavior; Sculpture; Sports/history |
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Abstract |
Over 45 million years of evolution the horse developed to a highly specialized animal in anatomy, physiology and behavior. No other animal had influenced the economic and cultural history of men to such extent. Hunting prey since the ice age, domesticated 4000 B.C. and used for thousands of years as unique animal all over the world has attained a new role today as partner in sport, as companion animal and even as cotherapeutic. The well known behavioral demands in use and keeping are still often not fulfilled. |
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Zoologischer Garten Zurich |
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German |
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Original Title |
Vom Wildpferd zum Reitpferd |
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0036-7281 |
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PMID:12174680 |
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Call Number |
refbase @ user @ |
Serial |
1913 |
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Author |
Heinrich, B.; Bugnyar, T. |
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Title |
Just how smart are ravens? |
Type |
Journal Article |
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Year |
2007 |
Publication |
Scientific American |
Abbreviated Journal |
Sci Am |
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Volume |
296 |
Issue |
4 |
Pages |
64-71 |
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Keywords |
Animals; *Behavior, Animal; Crows/*physiology; Environment; *Intelligence; Predatory Behavior; Problem Solving; Thinking |
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University of Vermont, USA |
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0036-8733 |
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PMID:17479632 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4101 |
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Author |
Reid, P.J.; Shettleworth, S.J. |
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Title |
Detection of cryptic prey: search image or search rate? |
Type |
Journal Article |
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Year |
1992 |
Publication |
Journal of experimental psychology. Animal behavior processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
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Volume |
18 |
Issue |
3 |
Pages |
273-286 |
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Keywords |
Animals; Appetitive Behavior; *Attention; Color Perception; Columbidae; *Discrimination Learning; Food Preferences/psychology; *Imagination; *Mental Recall; *Predatory Behavior |
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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. |
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University of Toronto, Ontario, Canada |
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0097-7403 |
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Notes |
PMID:1619395 |
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no |
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Call Number |
refbase @ user @ |
Serial |
381 |
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Author |
Wolf, M.; van Doorn, G.S.; Leimar, O.; Weissing, F.J. |
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Title |
Life-history trade-offs favour the evolution of animal personalities |
Type |
Journal Article |
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Year |
2007 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
447 |
Issue |
7144 |
Pages |
581-584 |
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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) |
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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. |
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Theoretical Biology Group, Centre for Ecological and Evolutionary Studies, University of Groningen, Kerklaan 30, 9751 NN Haren, The Netherlands |
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ISSN |
1476-4687 |
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Notes |
PMID:17538618 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4098 |
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Author |
Arnold, K.; Zuberbuhler, K. |
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Title |
Language evolution: semantic combinations in primate calls |
Type |
Journal Article |
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Year |
2006 |
Publication |
Nature |
Abbreviated Journal |
Nature |
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Volume |
441 |
Issue |
7091 |
Pages |
303 |
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Keywords |
Animal Migration; Animals; Eagles/physiology; *Evolution; Female; Haplorhini/*physiology; Male; Predatory Behavior; *Semantics; *Vocalization, Animal |
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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. |
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Address |
School of Psychology, University of St Andrews, St Andrews KY16 9JP, UK |
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1476-4687 |
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Notes |
PMID:16710411 |
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no |
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Call Number |
refbase @ user @ |
Serial |
354 |
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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? |
Type |
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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English |
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ISSN |
1435-9448 |
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Notes |
PMID:15660209 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2496 |
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Author |
Watve, M.; Thakar, J.; Kale, A.; Puntambekar, S.; Shaikh, I.; Vaze, K.; Jog, M.; Paranjape, S. |
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Title |
Bee-eaters ( Merops orientalis) respond to what a predator can see |
Type |
Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
Issue |
4 |
Pages |
253-259 |
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Keywords |
Animals; Birds/*physiology; *Predatory Behavior; *Visual Perception |
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Abstract |
Two sets of experiments are reported that show that the small green bee-eater ( Merops orientalis, a small tropical bird) can appreciate what a predator can or cannot see. Bee-eaters avoid entering the nest in the presence of a potential nest predator. In the first set of experiments bee-eaters entered the nest more frequently when the predator was unable to see the nest from its position, as compared to an approximately equidistant position from which the nest could be seen. In the second set of experiments bee-eaters entered the nest more frequently when the predator was looking away from the nest. The angle of gaze from the nest was associated significantly positively with the probability of entering the nest whereas the angle from the bird was not. Birds showed considerable flexibility as well as individual variation in the possible methods of judging the predator's position and direction of gaze. |
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Life Research Foundation, 10, Pranav, 1000/6C Navi Peth, Pune 411030, India. watve@vsnl.com |
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1435-9448 |
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Notes |
PMID:12461603 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2587 |
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Author |
Ratcliffe, J.M.; Fenton, M.B.; Shettleworth, S.J. |
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Title |
Behavioral flexibility positively correlated with relative brain volume in predatory bats |
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Journal Article |
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Year |
2006 |
Publication |
Brain, behavior and evolution |
Abbreviated Journal |
Brain Behav Evol |
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Volume |
67 |
Issue |
3 |
Pages |
165-176 |
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Keywords |
Adaptation, Psychological; Animals; Behavior, Animal/*physiology; Brain/*anatomy & histology/physiology; Chiroptera/*anatomy & histology/*physiology; Organ Size; Predatory Behavior/*physiology |
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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. |
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Department of Zoology, University of Toronto, Toronto, Canada. jmr247@cornell.edu |
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English |
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ISSN |
0006-8977 |
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PMID:16415571 |
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no |
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Call Number |
refbase @ user @ |
Serial |
358 |
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Author |
Jackson, R.R.; Pollard, S.D.; Li, D.; Fijn, N. |
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Title |
Interpopulation variation in the risk-related decisions of Portia labiata, an araneophagic jumping spider (Araneae, Salticidae), during predatory sequences with spitting spiders |
Type |
Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
Issue |
4 |
Pages |
215-223 |
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Keywords |
Animals; Female; Male; Mental Processes; *Predatory Behavior; Risk Factors; *Spiders |
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Abstract |
The extent to which decision-making processes are constrained in animals with small brains is poorly understood. Arthropods have brains much smaller and simpler than those of birds and mammals. This raises questions concerning limitations on how intricate the decision-making processes might be in arthropods. At Los Banos in the Philippines, Scytodes pallidus is a spitting spider that specialises in preying on jumping spiders, and Portia labiata is a jumping spider that preys on S. pallidus. Scytodid spit comes from the mouth, and egg-carrying females are less dangerous than eggless scytodids because the female uses her chelicerae to hold her eggs. Held eggs block her mouth, and she has to release them before she can spit. The Los Banos P. labiata sometimes adjusts its tactics depending on whether the scytodid encountered is carrying eggs or not. When pursuing eggless scytodids, the Los Banos P. labiata usually takes detour routes that enable it to close in from behind (away from the scytodid's line of fire). However, when pursuing egg-carrying scytodids, the Los Banos P. labiata sometimes takes faster direct routes to reach these safer prey. The Los Banos P. labiata apparently makes risk-related adjustments specific to whether scytodids are carrying eggs, but P. labiata from Sagada in the Philippines (allopatric to Scytodes) fails to make comparable risk-related adjustments. |
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Department of Zoology, University of Canterbury, Private Bag 4800, Christchurch, New Zealand |
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English |
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1435-9448 |
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PMID:12461599 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2591 |
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Author |
Jackson, R.R.; Pollard, S.D.; Cerveira, A.M. |
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Title |
Opportunistic use of cognitive smokescreens by araneophagic jumping spiders |
Type |
Journal Article |
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Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
5 |
Issue |
3 |
Pages |
147-157 |
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Keywords |
Animals; *Cognition; Movement; Optics; *Predatory Behavior; *Spiders; Touch; Visual Perception |
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Abstract |
Little is known about how a prey species' cognitive limitations might shape a predator's prey-capture strategy. A specific hypothesis is investigated: predators take advantage of times when the prey's attention is focussed on its own prey. Portia fimbriata, an araneophagic jumping spider (Salticidae) from Queensland, is shown in a series of 11 experiments to exploit opportunistically a situation in which a web-building spider on which it preys, Zosis genicularis (Uloboridae), is preoccupied with wrapping up its own prey. Experimental evidence supports three conclusions: (1). while relying on optical cues alone, P. fimbriata perceives when Z. genicularis is wrapping up prey; (2). when busy wrapping up prey, the responsiveness of Z. genicularis to cues from potential predators is diminished; and (3). P. fimbriata moves primarily during intervals when Z. genicularis is busy wrapping up prey. P. fimbriata's strategy is effective partly because the wrapping behaviour of Z. genicularis masks the web signals generated by the advancing P. fimbriata's footsteps and also because, while wrapping, Z. genicularis' attention is diverted away from predator-revealing cues. |
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Department of Zoology, University of Canterbury, Christchurch, New Zealand |
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English |
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1435-9448 |
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PMID:12357287 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2598 |
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