| Records |
| Author |
Albiach-Serrano, A.; Guillen-Salazar, F.; Call, J. |
| Title |
Mangabeys (Cercocebus torquatus lunulatus) solve the reverse contingency task without a modified procedure |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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| Abstract |
Problem solving often relies on generating new responses while inhibiting others, particularly prepotent ones. A paradigm to study inhibitory abilities is the reverse contingency task (Boysen and Berntson in J Exp Psychol Anim Behav Process 21:82-86, 1995), in which two different quantities of food are offered to an individual who receives the array he did not choose. Therefore, mastery of the task demands selecting the smaller quantity to obtain the larger one. Several non-human primates have been tested in the reverse contingency task. To date, only great apes and rhesus monkeys (Macaca mulatta) have succeeded in the original task, with no need of procedural modifications as the large-or-none contingency, correction trials or symbolic stimuli substituting for actual food quantities. Here, four mangabeys were presented with two stimulus arrays of one and four raisins in the context of the reverse contingency task. Three of them learned to perform the task well above chance without a modified procedure. They also reached above-chance performance when presented with two stimulus arrays of zero and four raisins, despite the initial difficulty of choosing a null quantity. After a period of 7-10 months, in which the animals were not tested on any task, all three subjects continued to perform well, even when presented with novel quantity pairs. |
| Address |
Unidad de Etologia y Bienestar Animal, Universidad Cardenal Herrera, 46113, Moncada (Valencia), Spain, analse@alumni.uv.es |
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English |
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1435-9448 |
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| Notes |
PMID:17318622 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2418 |
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| Author |
Subiaul, F.; Romansky, K.; Cantlon, J.F.; Klein, T.; Terrace, H. |
| Title |
Cognitive imitation in 2-year-old children (Homo sapiens): a comparison with rhesus monkeys (Macaca mulatta) |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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| Abstract |
Here we compare the performance of 2-year-old human children with that of adult rhesus macaques on a cognitive imitation task. The task was to respond, in a particular order, to arbitrary sets of photographs that were presented simultaneously on a touch sensitive video monitor. Because the spatial position of list items was varied from trial to trial, subjects could not learn this task as a series of specific motor responses. On some lists, subjects with no knowledge of the ordinal position of the items were given the opportunity to learn the order of those items by observing an expert model. Children, like monkeys, learned new lists more rapidly in a social condition where they had the opportunity to observe an experienced model perform the list in question, than under a baseline condition in which they had to learn new lists entirely by trial and error. No differences were observed between the accuracy of each species' responses to individual items or in the frequencies with which they made different types of errors. These results provide clear evidence that monkeys and humans share the ability to imitate novel cognitive rules (cognitive imitation). |
| Address |
Department of Speech and Hearing Science, The George Washington University, 1922 F Street, NW # 406E, Washington, DC, 20001, USA, subiaul@aol.com |
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1435-9448 |
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| Notes |
PMID:17287996 |
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no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2420 |
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| Author |
Moskat, C.; Hauber, M.E. |
| Title |
Conflict between egg recognition and egg rejection decisions in common cuckoo (Cuculus canorus) hosts |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Common cuckoos (Cuculus canorus) are obligate brood parasites, laying eggs into nests of small songbirds. The cuckoo hatchling evicts all eggs and young from a nest, eliminating hosts' breeding success. Despite the consistently high costs of parasitism by common cuckoos, great reed warbler (Acrocephalus arundinaceus) hosts sometime accept and other times reject parasitic eggs. To explore the cognitive basis of this seemingly maladaptive variation in host responses, we documented differences in egg rejection rates within 1-day periods just before and during the egg-laying cycle across host nests. Hosts rejected cuckoo eggs at 28% of nests during the pre-egg-laying stage, but when cuckoos exchanged the first host egg with the parasite egg, rejections increased to 75%. Even later, when several host eggs remained in a nest after parasitism, rejection rate fell to 37.5%. Experimental parasitism with conspecific eggs on the first and second day of host laying showed a similar directional change in relative rejection rates, dropping from 35 to 0%. Mistakes in egg discrimination (ejection error and ejection cost) were observed mostly in the latter part of the laying cycle, mainly when nests contained 5-6 eggs. These correlational and experimental patterns of egg rejection support a cognitive process of egg discrimination through several shifts in hosts' optimal acceptance thresholds of foreign eggs. The results are also consistent with the evolution of foreign egg rejection in the context of nest-sanitation (i.e. the removal of foreign objects). Our results suggest that common cuckoo hosts may recognize more eggs than they reject. This implies that the experience of the host with one or more of its own eggs in the clutch is a key factor in rejecting parasite eggs by allowing inspection and learning about their own clutch. |
| Address |
Animal Ecology Research Group of the Hungarian Academy of Sciences, c/o Hungarian Natural History Museum, Budapest, Ludovika ter 2., 1083, Hungary, moskat@nhmus.hu |
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1435-9448 |
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| Notes |
PMID:17279422 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2421 |
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| Author |
Pickering, C.M.; Hill, W. |
| Title |
Impacts of recreation and tourism on plant biodiversity and vegetation in protected areas in Australia |
Type |
Journal Article |
| Year |
2007 |
Publication |
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Abbreviated Journal |
J Environ Manage |
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This paper reviews recent research into the impact of recreation and tourism in protected areas on plant biodiversity and vegetation communities in Australia. Despite the international significance of the Australian flora and increasing visitation to protected areas there has been limited research on recreational and tourism impacts in Australia. As overseas, there are obvious direct impacts of recreation and tourism such as clearing of vegetation for infrastructure or damage from trampling, horse riding, mountain biking and off road vehicles. As well, there are less obvious but potentially more severe indirect impacts. This includes self-propagating impacts associated with the spread of some weeds from trails and roads. It also includes the severe impact on native vegetation, including many rare and threatened plants, from spread of the root rot fungus Phytopthora cinnamomi. This review highlights the need for more recreational ecology research in Australia. |
| Address |
International Centre for Ecotourism Research, Griffith University, PMB 50 Gold Coast Mail Centre, Gold Coast, Qld. 9726, Australia |
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0301-4797 |
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PMID:17234325 |
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no |
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Equine Behaviour @ team @ |
Serial |
2620 |
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| Author |
Mennecke, B.E.; Townsend, A.M.; Hayes, D.J.; Lonergan, S.M. |
| Title |
A study of the factors that influence consumer attitudes toward beef products using the conjoint market analysis tool |
Type |
Journal Article |
| Year |
2007 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
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Pages |
jas.2006-495- |
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This study utilizes an analysis technique commonly used in marketing, the conjoint method, to examine the relative utilities of a set of beef steak characteristics considered by a national sample of 1,432 US consumers, as well as additional localized samples representing undergraduate students at a business college and in an animal science department. The analyses indicate that among all respondents, region of origin is by far the most important characteristic; this is followed by animal breed, traceability, animal feed, and beef quality. Alternatively, the cost of cut, farm ownership, the use (or non-use) of growth promoters, and whether the product is guaranteed tender were the least important factors. Results for animal science undergraduates are similar to the aggregate results except that these students emphasized beef quality at the expense of traceability and the non-use of growth promoters. Business students also emphasized region of origin but then emphasized traceability and cost. The ideal steak for the national sample is from a locally produced choice Angus, fed a mixture of grain and grass that is traceable to the farm or origin. If the product was not produced locally respondents indicated that their preferred production states are, in order from most to least preferred, Iowa, Texas, Nebraska and Kansas. |
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10.2527/jas.2006-495 |
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no |
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Equine Behaviour @ team @ |
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2944 |
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| Author |
Bermú dez, J.é |
| Title |
Thinking Without Words: An Overview for Animal Ethics |
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Journal Article |
| Year |
2007 |
Publication |
The Journal of Ethics |
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11 |
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Pages |
319-335 |
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no |
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refbase @ user @ |
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3399 |
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| Author |
Allen, C.; Bekoff, M. |
| Title |
Animal Minds, Cognitive Ethology, and Ethics |
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Journal Article |
| Year |
2007 |
Publication |
The Journal of Ethics |
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11 |
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Pages |
299-317 |
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no |
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refbase @ user @ |
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3400 |
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| Author |
Jellinger, K.A. |
| Title |
Comparative Cognition: Experimental Exploration of Animal Intelligence |
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Journal Article |
| Year |
2007 |
Publication |
European Journal of Neurology |
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14 |
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e53-e53 |
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no |
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refbase @ user @ |
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3418 |
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| Author |
Doucette, T.A.; Ryan, C.L.; Tasker, R.A. |
| Title |
Gender-based changes in cognition and emotionality in a new rat model of epilepsy |
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Journal Article |
| Year |
2007 |
Publication |
Amino Acids |
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32 |
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317-322 |
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refbase @ user @ |
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3404 |
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| Author |
Singer, E.R.; Barnes, J.; Saxby, F.; Murray, J.K. |
| Title |
Injuries in the event horse: Training versus competition |
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Journal Article |
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2007 |
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Abbreviated Journal |
Vet J |
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Two related studies on injuries sustained by event horses during competition and during training are reported. During the cross-country phase of competition, the most common injuries were lacerations and abrasions to the carpus and stifle. Superficial digital flexor tendonitis and exertional rhabdomyolysis were significantly more common during Cours Complete Internationale (CCI) competitions compared to one-day event (ODE) competitions. The difference in injury types at ODEs and CCI competitions probably relates to the increased athletic demands of the CCI and the closer veterinary observation at these competitions. The results of the training study indicate that 21% of horses intending to compete in a CCI did not start due to injury. Forty-three percent of these injuries involved soft tissue structures with injuries to the superficial digital flexor tendon and the suspensory ligament each accounting for 33%. The most important area for future research is investigation of the risk factors for these career-threatening soft tissue injuries. |
| Address |
Division of Equine Studies, University of Liverpool, Leahurst, Neston, South Wirral, CH64 7TE, UK |
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1090-0233 |
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PMID:17204438 |
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no |
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Equine Behaviour @ team @ |
Serial |
4025 |
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