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Author |
Raveling, D. G. |
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Preflight and flight behaviour of Canada geese. |
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1969 |
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Auk |
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Auk |
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86 |
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671-681 |
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Equine Behaviour @ team @ |
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5314 |
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Author |
Griffin, A.S.; Galef, J., Bennett G. |
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Title |
Social learning about predators: does timing matter? |
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Journal Article |
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Year |
2005 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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69 |
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3 |
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669-678 |
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In Pavlovian conditioning, animals acquire a response to a previously neutral stimulus (conditioned stimulus, CS), such as a light, if that stimulus predicts a biologically important event (unconditioned stimulus, US), such as delivery of food. Learning typically occurs when the CS precedes the US (forward conditioning), and not when the CS follows the US (backward conditioning). In social learning about predators, the predator stimulus is considered to be the CS to which observers acquire avoidance responses after the stimulus has been presented in contiguity with an alarmed demonstrator, the US. We tested the prediction that social learning of response to a predator would occur even if the social alarm cues (the US) appeared before the predatory stimulus (the CS). Carib grackles, Quiscalus lugubris, responded to a familiar predator presented at close range by suppressing alarm calls. Presentation of an unfamiliar avian model (black-and-yellow pigeon) also decreased calling, and this inhibition of calling was enhanced following a training session in which the model stimulus was presented in association with grackle alarm calls. Acquired inhibition of calling was independent of the order of presentation of the model and an alarm chorus. These are the first results to indicate that social acquisition of predator avoidance is not dependent upon a particular temporal relationship between predators and social alarm cues. Evolution may have modified some properties of Pavlovian conditioning to accommodate social learning about potentially dangerous stimuli. |
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refbase @ user @ |
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572 |
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Author |
Potter, G.D.; Yeates, B.F. |
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Title |
Behavioral principles of training and management |
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Year |
1990 |
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The Horse, 2nd Edn |
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665-682 |
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Cited By (since 1996): 4; Export Date: 21 October 2008 |
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Equine Behaviour @ team @ |
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4540 |
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Schino, G.; Aureli, F. |
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Title |
Reciprocity in group-living animals: partner control versus partner choice |
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Journal Article |
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2016 |
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Biological Reviews |
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Biol Rev |
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92 |
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2 |
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665-672 |
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Keywords |
cooperation; reciprocity; partner control; partner choice; proximate mechanisms |
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ABSTRACT Reciprocity is probably the most debated of the evolutionary explanations for cooperation. Part of the confusion surrounding this debate stems from a failure to note that two different processes can result in reciprocity: partner control and partner choice. We suggest that the common observation that group-living animals direct their cooperative behaviours preferentially to those individuals from which they receive most cooperation is to be interpreted as the result of the sum of the two separate processes of partner control and partner choice. We review evidence that partner choice is the prevalent process in primates and propose explanations for this pattern. We make predictions that highlight the need for studies that separate the effects of partner control and partner choice in a broader variety of group-living taxa. |
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Wiley/Blackwell (10.1111) |
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1464-7931 |
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doi: 10.1111/brv.12248 |
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Equine Behaviour @ team @ |
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6411 |
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Author |
Rizzolatti, G.; Fogassi, L.; Gallese, V. |
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Neurophysiological mechanisms underlying the understanding and imitation of action |
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2001 |
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Nature Reviews Neuroscience |
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Nat Rev Neurosci |
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2 |
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9 |
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661-670 |
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What are the neural bases of action understanding? Although this capacity could merely involve visual analysis of the action, it has been argued that we actually map this visual information onto its motor representation in our nervous system. Here we discuss evidence for the existence of a system, the ‘mirror system’, that seems to serve this mapping function in primates and humans, and explore its implications for the understanding and imitation of action. |
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1471-003x |
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10.1038/35090060 |
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Equine Behaviour @ team @ |
Serial |
5013 |
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Author |
Geisbauer, G.; Griebel, U.; Schmid, A.; Timney, B |
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Title |
Brightness discrimination and neutral point |
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Journal Article |
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Year |
2004 |
Publication |
Canadian Journal of Zoology |
Abbreviated Journal |
Can. J. Zool |
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82 |
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4 |
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660-670 |
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Abstract: Equine brightness discrimination ability and color discrimination were measured using a two-choice discrimination
task. Two Haflinger horses (Equus caballus L., 1758) were trained to discriminate 30 different shades of grey
varying from low to high relative brightness. Their ability to distinguish shades of grey was poor, with calculated
Weber fractions of 0.42 and 0.45. In addition, a “neutral point” test to determine the dimensionality of color vision
was carried out. Three hues of blue-green were tested versus a range of grey targets with brightnesses similar to those
of the blue-green targets. A neutral point was found at about 480 nm. Thus, we can conclude that horses possess
dichromatic color vision. |
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Equine Behaviour @ team @ |
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3649 |
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Author |
Judge, P.G.; De Waa,l F.B.M. |
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Title |
Rhesus monkey behaviour under diverse population densities: coping with long-term crowding |
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Journal Article |
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Year |
1997 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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54 |
Issue |
3 |
Pages |
643-662 |
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Abstract |
A popular view is that high population density promotes behavioural pathology, particularly increased aggression. In contrast, according to a coping model, some primates have behavioural mechanisms (e.g. formal displays, reconciliation and grooming) that regulate social tensions and control the negative consequences of crowding. Seven captive rhesus monkey groups, Macaca mulattawere observed over a wide range of population densities where high-density groups were over 2000 times more crowded than low-density free-ranging groups. As density increased, male rhesus monkeys increased grooming and huddling but did not increase rates of aggression. Females increased all categories of behaviour examined (heavy aggression, mild aggression, formal bared-teeth displays, grooming and huddling), but the increases were not distributed uniformly to all classes of partners. Females increased only grooming, huddling and appeasement displays to males, increased only aggression and huddling with kin and increased all categories of behaviour to non-kin adult females. There were no differences in the percentage of aggressive conflicts reconciled across density conditions. Increased density had different effects on particular relationships. Relationships between females and males were characterized by a coping pattern in which animals modified their behaviour in ways that may decrease aggression under crowded conditions. Female relationships with kin and non-kin were characterized by increases in both aggression and friendly interactions as density increased. The different patterns of response to higher density may reflect different strategies depending on the strength and stability of relationships and the potential consequences if certain relationships are disrupted.1997The Association for the Study of Animal Behaviour |
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Yerkes Regional Primate Research Center and Department of Psychology, Emory University |
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0003-3472 |
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PMID:9299049 |
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Call Number |
refbase @ user @ |
Serial |
199 |
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Author |
De Stoppelaire, G.H.; Gillespie, T.W.; Brock, J.C.; Tobin, G.A. |
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Title |
Use of remote sensing techniques to determine the effects of grazing on vegetation cover and dune elevation at Assateague Island National Seashore: impact of horses |
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Journal Article |
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2004 |
Publication |
Environmental Management |
Abbreviated Journal |
Environ Manage |
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34 |
Issue |
5 |
Pages |
642-649 |
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Animals; Animals, Wild; Conservation of Natural Resources; Ecosystem; Environmental Monitoring; *Feeding Behavior; *Horses; Maryland; Plants/*growth & development; Population Dynamics; Silicon Dioxide; *Soil |
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The effects of grazing by feral horses on vegetation and dune topography at Assateague Island National Seashore were investigated using color-infrared imagery, lidar surveys, and field measurements. Five pairs of fenced and unfenced plots (300 m2) established in 1993 on sand flats and small dunes with similar elevation, topography, and vegetation cover were used for this study. Color-infrared imagery from 1998 and field measurements from 2001 indicated that there was a significant difference in vegetation cover between the fenced and unfenced plot-pairs over the study period. Fenced plots contained a higher percentage of vegetation cover that was dominated by American beachgrass (Ammophila breviligulata). Lidar surveys from 1997, 1999, and 2000 showed that there were significant differences in elevation and topography between fenced and unfenced plot-pairs. Fenced plots were, on average, 0.63 m higher than unfenced plots, whereas unfenced plots had generally decreased in elevation after establishment in 1993. Results demonstrate that feral horse grazing has had a significant impact on dune formation and has contributed to the erosion of dunes at Assateague Island. The findings suggest that unless the size of the feral horse population is reduced, grazing will continue to foster unnaturally high rates of dune erosion into the future. In order to maintain the natural processes that historically occurred on barrier islands, much larger fenced exclosures would be required to prevent horse grazing. |
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US Geological Survey, Center for Coastal and Watershed Studies, St. Petersburg, Florida 33701, USA. georgia.destoppelaire@my.FWC.com |
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0364-152X |
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PMID:15633024 |
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1896 |
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Author |
Galef, B.G. |
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Title |
The adaptive value of social learning: a reply to Laland |
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1996 |
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Animal Behaviour. |
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Anim. Behav. |
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52 |
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3 |
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641-644 |
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No abstract |
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refbase @ user @ |
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566 |
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Loyola, E.G.; Rodriguez, M.H.; Gonzalez, L.; Arredondo, J.I.; Bown, D.N.; Vaca, M.A. |
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Title |
Effect of indoor residual spraying of DDT and bendiocarb on the feeding patterns of Anopheles pseudopunctipennis in Mexico |
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1990 |
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Journal of the American Mosquito Control Association |
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J Am Mosq Control Assoc |
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6 |
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4 |
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635-640 |
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Animals; Anopheles/*physiology; *Carbamates; Cattle; *Ddt; Ecology; Enzyme-Linked Immunosorbent Assay; Feeding Behavior/*drug effects; Horses; Humans; Insect Vectors; Insecticide Resistance; *Insecticides; Mexico; *Phenylcarbamates; Seasons |
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Intense and persistent use of DDT for malaria control has increased resistance and induced exophilic behavior of Anopheles pseudopunctipennis. An evaluation of bendiocarb and DDT to control this species in Sinaloa, Mexico, showed that, in spite of DDT-resistance, both insecticides produced similar effects. Feeding patterns were analyzed to explain these results. Resting mosquitoes were collected over the dry and wet seasons. Anophelines were tested in an ELISA to determine the source of the meals. The human blood index (HBI) ranged from 3.3 to 6.8% in DDT- and from 12.7 to 26.9% in bendiocarb-sprayed houses. Irritability and repellency in DDT-sprayed houses could explain the reduced HBI. In contrast, bendiocarb produced higher mortality. These effects could have affected different components of the vectorial capacity and similarly reduced malaria. |
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Center for Malaria Research, Chiapas, Mexico |
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8756-971X |
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PMID:2098469 |
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Equine Behaviour @ team @ |
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2671 |
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