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Healy, S.D.; Rowe, C. |
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Title |
Costs and benefits of evolving a larger brain: doubts over the evidence that large brains lead to better cognition |
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2013 |
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Anim Behav |
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86 |
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Equine Behaviour @ team @ Healy2013 |
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6317 |
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Santiago-Avila, F.J.; Cornman, A.M.; Treves, A. |
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Title |
Killing wolves to prevent predation on livestock may protect one farm but harm neighbors |
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2018 |
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Plos One |
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Plos One |
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13 |
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1 |
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e0189729 |
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Large carnivores, such as gray wolves, Canis lupus, are difficult to protect in mixed-use landscapes because some people perceive them as dangerous and because they sometimes threaten human property and safety. Governments may respond by killing carnivores in an effort to prevent repeated conflicts or threats, although the functional effectiveness of lethal methods has long been questioned. We evaluated two methods of government intervention following independent events of verified wolf predation on domestic animals (depredation) in the Upper Peninsula of Michigan, USA between 1998-2014, at three spatial scales. We evaluated two intervention methods using log-rank tests and conditional Cox recurrent event, gap time models based on retrospective analyses of the following quasi-experimental treatments: (1) selective killing of wolves by trapping near sites of verified depredation, and (2) advice to owners and haphazard use of non-lethal methods without wolf-killing. The government did not randomly assign treatments and used a pseudo-control (no removal of wolves was not a true control), but the federal permission to intervene lethally was granted and rescinded independent of events on the ground. Hazard ratios suggest lethal intervention was associated with an insignificant 27% lower risk of recurrence of events at trapping sites, but offset by an insignificant 22% increase in risk of recurrence at sites up to 5.42 km distant in the same year, compared to the non-lethal treatment. Our results do not support the hypothesis that Michigan's use of lethal intervention after wolf depredations was effective for reducing the future risk of recurrence in the vicinities of trapping sites. Examining only the sites of intervention is incomplete because neighbors near trapping sites may suffer the recurrence of depredations. We propose two new hypotheses for perceived effectiveness of lethal methods: (a) killing predators may be perceived as effective because of the benefits to a small minority of farmers, and (b) if neighbors experience side-effects of lethal intervention such as displaced depredations, they may perceive the problem growing and then demand more lethal intervention rather than detecting problems spreading from the first trapping site. Ethical wildlife management guided by the “best scientific and commercial data available” would suggest suspending the standard method of trapping wolves in favor of non-lethal methods (livestock guarding dogs or fladry) that have been proven effective in preventing livestock losses in Michigan and elsewhere. |
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Equine Behaviour @ team @ |
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6502 |
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Range, F.; Möslinger, H.; Virányi, Z. |
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Domestication has not affected the understanding of means-end connections in dogs |
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2012 |
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Anim Cogn |
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15 |
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Equine Behaviour @ team @ Range2012 |
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6322 |
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Albiach-Serrano, A.; Bräuer, J.; Cacchione, T.; Zickert, N.; Amici, F. |
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The effect of domestication and ontogeny in swine cognition (Sus scrofa scrofa and S. s. domestica) |
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2012 |
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Appl Anim Behav Sci |
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141 |
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Equine Behaviour @ team @ Albiach-Serrano2012 |
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6329 |
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Roubová, V.; Konecná, M.; Smilauer, P.; Wallner, B. |
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Title |
Whom to Groom and for What? Patterns of Grooming in Female Barbary Macaques (Macaca sylvanus) |
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2015 |
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Plos One |
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Plos One |
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10 |
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2 |
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e0117298 |
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Grooming is one of the most conspicuous social interactions among nonhuman primates. The selection of grooming partners can provide important clues about factors relevant for the distribution of grooming within a social group. We analyzed grooming behavior among 17 semi-free ranging female Barbary macaques (Macaca sylvanus). We tested whether grooming is related to kinship, rank and friendship. Furthermore, we tested whether grooming is reciprocated or exchanged for rank related benefits (i.e. lower aggression and increased tolerance whilst feeding). We found that in general grooming was reciprocally exchanged, directed up the hierarchy and at the same time affected by friendship and kinship. Grooming was more frequent among individuals with higher friendship values as well as amongst related individuals. We also divided our data set on the basis of rank difference and tested if different power asymmetries between individuals affected the tendency to exchange grooming for rank related benefits and grooming reciprocation. In support of our initial hypothesis our results show that the reciprocation of grooming was a significant predictor of grooming interactions between individuals of similar rank, but not between those individuals more distantly separated in the social hierarchy. However, we did not find any evidence for grooming being exchanged for rank related benefits in either data set. Our results, together with previously published studies, illustrate the behavioral flexibility of macaques. It is clear that multiple studies of the same species are necessary to gather the data required for the solid comparative studies needed to shed light on patterns of grooming behavior in primates. |
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Public Library of Science |
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Equine Behaviour @ team @ |
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6415 |
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Frère, C.H.; Krützen, M.; Mann, J.; Connor, R.C.; Bejder, L.; Sherwin, W.B. |
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Social and genetic interactions drive fitness variation in a free-living dolphin population |
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2010 |
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Proc Natl Acad Sci USA |
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Proc. Natl. Acad. Sci. U.S.A. |
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107 |
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46 |
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19949-19954 |
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The evolutionary forces that drive fitness variation in species are of considerable interest. Despite this, the relative importance and interactions of genetic and social factors involved in the evolution of fitness traits in wild mammalian populations are largely unknown. To date, a few studies have demonstrated that fitness might be influenced by either social factors or genes in natural populations, but none have explored how the combined effect of social and genetic parameters might interact to influence fitness. Drawing from a long-term study of wild bottlenose dolphins in the eastern gulf of Shark Bay, Western Australia, we present a unique approach to understanding these interactions. Our study shows that female calving success depends on both genetic inheritance and social bonds. Moreover, we demonstrate that interactions between social and genetic factors also influence female fitness. Therefore, our study represents a major methodological advance, and provides critical insights into the interplay of genetic and social parameters of fitness. |
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Equine Behaviour @ team @ |
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6412 |
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Van Horik, J.; Clayton, N.; Emery, N. |
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Oxford Handbook of Comparative Evolutionary Psychology |
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Oxford University Press |
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New York |
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Vonk, J.; Shackelford, T. |
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Equine Behaviour @ team @ |
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6403 |
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Suter, S.M.; Giordano, M.; Nietlispach, S.; Apollonio, M.; Passilongo, D. |
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Non-invasive acoustic detection of wolves |
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2016 |
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Bioacoustics |
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Bioacoustics |
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Monitoring wolves (Canis lupus) is a difficult and often expensive task due to high mobility,pack dynamic, shyness and nocturnal activity of this species. Wolves communicate acoustically trough howling, within pack and with packs of the neighbourhood. A wolf howl is a low frequency vocalization that can be transmitted over long distances and thus be used
for monitoring tasks. Animated howling survey is a current method to monitor wolves indifferent areas all over the world. Animated howling, however, may be invasive to residential wolf packs and could create possible negative reactions from local human population. Here we show that it is possible to detect wolves by recording spontaneous howling events. We measured the sound pressure level of wolf howls on captive individuals and we further found that simulated howling may be recorded and clearly identified up to a distance of 3 km. We finally conducted non-invasive acoustic detection of wolves in a free ranging population. The use of passive sound recorders may provide a powerful non-invasive tool for future wolf monitoring and thus help to established sustainable management plans for this species. |
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Equine Behaviour @ team @ |
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6500 |
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Langbein, J.; Siebert, K.; Nuernberg, G. |
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Concurrent recall of serially learned visual discrimination problems in dwarf goats (Capra hircus) |
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2008 |
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Behav Proc |
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79 |
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Equine Behaviour @ team @ Langbein2008 |
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6363 |
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Squire, L. |
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Memory systems of the brain: a brief history and current perspective |
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2004 |
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Neurobiol Learn Mem |
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82 |
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Equine Behaviour @ team @ Squire2004 |
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6365 |
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