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| Author |
Bundesministerium für Ernährung, Landwirtschaft und Verbraucherschutz |
| Title |
Beurteilung von Pferdehaltungen unter Tierschutzgesichtspunkten |
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Manuscript |
| Year |
2009 |
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Equine Behaviour @ team @ |
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5481 |
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Szabó, L.; Heltai, M.; Szucs, E.; Lanszki, J.; Lehoczki, R. |
| Title |
Expansion range of the golden jackal in Hungary between 1997 and 2006 |
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Journal Article |
| Year |
2009 |
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Mammalia |
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73 |
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Equine Behaviour @ team @ Szabó2009 |
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6461 |
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| Author |
Dong, D.; Jones, G.; Zhang, S. |
| Title |
Dynamic evolution of bitter taste receptor genes in vertebrates |
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Journal Article |
| Year |
2009 |
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BMC Evolutionary Biology |
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| Volume |
9 |
Issue |
1 |
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12 |
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Sensing bitter tastes is crucial for many animals because it can prevent them from ingesting harmful foods. This process is mainly mediated by the bitter taste receptors (T2R), which are largely expressed in the taste buds. Previous studies have identified some T2R gene repertoires, and marked variation in repertoire size has been noted among species. However, the mechanisms underlying the evolution of vertebrate T2R genes remain poorly understood. |
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1471-2148 |
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Equine Behaviour @ team @ Dong2009 |
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6637 |
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Dunbar, R.I.M. |
| Title |
The social brain hypothesis and its implications for social evolution |
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Journal Article |
| Year |
2009 |
Publication |
Annals of Human Biology |
Abbreviated Journal |
Annals of Human Biology |
| Volume |
36 |
Issue |
5 |
Pages |
562-572 |
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| Abstract |
The social brain hypothesis was proposed as an explanation for the fact that primates have unusually large brains for body size compared to all other vertebrates: Primates evolved large brains to manage their unusually complex social systems. Although this proposal has been generalized to all vertebrate taxa as an explanation for brain evolution, recent analyses suggest that the social brain hypothesis takes a very different form in other mammals and birds than it does in anthropoid primates. In primates, there is a quantitative relationship between brain size and social group size (group size is a monotonic function of brain size), presumably because the cognitive demands of sociality place a constraint on the number of individuals that can be maintained in a coherent group. In other mammals and birds, the relationship is a qualitative one: Large brains are associated with categorical differences in mating system, with species that have pairbonded mating systems having the largest brains. It seems that anthropoid primates may have generalized the bonding processes that characterize monogamous pairbonds to other non-reproductive relationships (?friendships?), thereby giving rise to the quantitative relationship between group size and brain size that we find in this taxon. This raises issues about why bonded relationships are cognitively so demanding (and, indeed, raises questions about what a bonded relationship actually is), and when and why primates undertook this change in social style. |
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Taylor & Francis |
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0301-4460 |
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doi: 10.1080/03014460902960289 |
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Equine Behaviour @ team @ |
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6546 |
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| Author |
von Bayern, A.M.P. |
| Title |
The role of experience in problem solving and innovative tool use in crows |
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Journal Article |
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2009 |
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Curr Biol |
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19 |
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Equine Behaviour @ team @ von Bayern2009 |
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6290 |
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| Author |
Shettleworth, S.J. |
| Title |
The evolution of comparative cognition: is the snark still a Boojum? |
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Journal Article |
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2009 |
Publication |
Behav Processes |
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80 |
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Equine Behaviour @ team @ Shettleworth2009 |
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6231 |
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Iliopoulos, Y.; Sgardelis, S.; Koutis, V.; Savaris, D. |
| Title |
Wolf depredation on livestock in central Greece |
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Journal Article |
| Year |
2009 |
Publication |
Mammal Research |
Abbreviated Journal |
Mamm. Reas. |
| Volume |
54 |
Issue |
1 |
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11-22 |
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We studied wolfCanis lupus Linnaeus, 1758 -- livestock conflict in central Greece by investigating patterns of 267 verified wolf attacks on livestock for 21 months. Wolves attacked adult goats 43% and cattle 218% more than expected, whereas sheep 41% less than expected from their availability. Wolves killed less than four sheep or goats in 79%, and one cow or calf in 74% of depredation events, respectively. We recorded higher attack rates during wolf post-weaning season. Wolf attacks on strayed, or kept inside non predator-proof enclosures, sheep and goats, were on average two to four times respectively more destructive than those when livestock was guarded by a shepherd. Sheepdog use reduced losses per attack. Optimal sheepdog number ranged from 3 to 9 animals depending on flock size. Losses per attack were positively related to the number of wolves involved. Total losses per farm were positively correlated with the size of livestock unit but percentage losses per capita increased with decreasing flock size. Management implications to mitigate livestock depredation are discussed. |
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2199-241x |
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Equine Behaviour @ team @ Iliopoulos2009 |
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6576 |
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Ruid, D.B.; Paul, W.J.; Roell, B.J.; Wydeven, A.P.; Willging, R.C.; Jurewicz, R.L.; Lonsway, D.H. |
| Title |
Wolf-Human Conflicts and Management in Minnesota, Wisconsin, and Michigan |
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Book Chapter |
| Year |
2009 |
Publication |
Recovery of Gray Wolves in the Great Lakes Region of the United States: An Endangered Species Success Story |
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279-295 |
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Springer New York |
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New York, NY |
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Wydeven, A.P.; Van Deelen, T.R.; Heske, E.J. |
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978-0-387-85952-1 |
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Equine Behaviour @ team @ Ruid2009 |
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6577 |
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Goodson, J.L.; Schrock, S.E.; Klatt, J.D.; Kabelik, D.; Kingsbury, M.A. |
| Title |
Mesotocin and Nonapeptide Receptors Promote Estrildid Flocking Behavior |
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Journal Article |
| Year |
2009 |
Publication |
Science |
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325 |
Issue |
5942 |
Pages |
862-866 |
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Proximate neural mechanisms that influence preferences for groups of a given size are almost wholly unknown. In the highly gregarious zebra finch (Estrildidae: Taeniopygia guttata), blockade of nonapeptide receptors by an oxytocin (OT) antagonist significantly reduced time spent with large groups and familiar social partners independent of time spent in social contact. Opposing effects were produced by central infusions of mesotocin (MT, avian homolog of OT). Most drug effects appeared to be female-specific. Across five estrildid finch species, species-typical group size correlates with nonapeptide receptor distributions in the lateral septum, and sociality in female zebra finches was reduced by OT antagonist infusions into the septum but not a control area. We propose that titration of sociality by MT represents a phylogenetically deep framework for the evolution of OT’s female-specific roles in pair bonding and maternal functions. |
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10.1126/science.1174929 |
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Equine Behaviour @ team @ |
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5646 |
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Schmidt, M.; Lipson, H. |
| Title |
Distilling Free-Form Natural Laws from Experimental Data |
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Journal Article |
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2009 |
Publication |
Science |
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Science |
| Volume |
324 |
Issue |
5923 |
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81-85 |
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For centuries, scientists have attempted to identify and document analytical laws that underlie physical phenomena in nature. Despite the prevalence of computing power, the process of finding natural laws and their corresponding equations has resisted automation. A key challenge to finding analytic relations automatically is defining algorithmically what makes a correlation in observed data important and insightful. We propose a principle for the identification of nontriviality. We demonstrated this approach by automatically searching motion-tracking data captured from various physical systems, ranging from simple harmonic oscillators to chaotic double-pendula. Without any prior knowledge about physics, kinematics, or geometry, the algorithm discovered Hamiltonians, Lagrangians, and other laws of geometric and momentum conservation. The discovery rate accelerated as laws found for simpler systems were used to bootstrap explanations for more complex systems, gradually uncovering the “alphabet” used to describe those systems. |
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10.1126/science.1165893 |
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Equine Behaviour @ team @ |
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5264 |
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