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| Author |
Coblentz, B.E. |
| Title |
The effects of feral goats (Capra hircus) on island ecosystems |
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Journal Article |
| Year |
1978 |
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Biol Conserv |
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13 |
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Equine Behaviour @ team @ Coblentz1978 |
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6250 |
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| Author |
Breitenmoser, U. |
| Title |
Large predators in the Alps: the fall and rise of man's competitors |
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Journal Article |
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1998 |
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Biol Conserv |
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83 |
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Equine Behaviour @ team @ Breitenmoser1998 |
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6450 |
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| Author |
Ripple, W.J.; Beschta, R.L. |
| Title |
Trophic cascades in Yellowstone: The first 15 years after wolf reintroduction |
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Journal Article |
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2012 |
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Biol Conserv |
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145 |
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Equine Behaviour @ team @ Ripple2012 |
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6452 |
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Apollonio, M.; Mattioli, L.; Scandura, M.; Mauri, L.; Gazzola, A.; Avanzinelli, E. |
| Title |
Wolves in the Casentinesi Forests: insights for wolf conservation in Italy from a protected area with a rich wild prey community |
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Journal Article |
| Year |
2004 |
Publication |
Biol Conserv |
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120 |
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Equine Behaviour @ team @ Apollonio2004 |
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6475 |
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| Author |
Pimenta, V.; Barroso, I.; Boitani, L.; Beja, P. |
| Title |
Risks a la carte: Modelling the occurrence and intensity of wolf predation on multiple livestock species |
Type |
Journal Article |
| Year |
2018 |
Publication |
Biological Conservation |
Abbreviated Journal |
Biol. Conserva. |
| Volume |
228 |
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Pages |
331-342 |
| Keywords |
Human-wildlife conflict; Large carnivores; Livestock husbandry systems; Predation risk; Predation intensity |
| Abstract |
Predation on livestock is a source of human-wildlife conflicts and can undermine the conservation of large carnivores. To design effective mitigation strategies, it is important to understand the determinants of predation across livestock species, which often differ in husbandry practices, vulnerability to predators and economic value. Moreover, attention should be given to both predation occurrence and intensity, because these can have different spatial patterns and predictors. We used spatial risk modelling to quantify factors affecting wolf predation on five livestock species in Portugal. Within the 1619 parishes encompassing the entire wolf range in the country, the national wolf compensation scheme recorded 17,670 predation events in 2009-2015, each involving one or more livestock species: sheep (31.7%), cattle (27.7%), goats (26.8%), horses (14.8%) and donkeys (3.2%). Models built with 2009-2013 data and validated with 2014-2015 data, showed a shared general pattern of predation probability on each species increasing with its own density and proximity to wolf packs. For some species there were positive relations with the density of other livestock species, and with habitat variables such as altitude, and land cover by shrubland and natural pastures. There was also a general pattern for predation intensity on each species increasing with its own density, while proximity to wolf packs had no significant effects. Predation intensity on goats, cattle and horses increased with the use of communal versus private pastures. Our results suggest that although predation may occur wherever wolves coexist with livestock species, high predation intensity is mainly restricted to particular areas where husbandry practices increase the vulnerability of animals, and this is where mitigation efforts should concentrate. |
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0006-3207 |
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no |
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Equine Behaviour @ team @ |
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6438 |
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Imbert, C.; Caniglia, R.; Fabbri, E.; Milanesi, P.; Randi, E.; Serafini, M.; Torretta, E.; Meriggi, A. |
| Title |
Why do wolves eat livestock?: Factors influencing wolf diet in northern Italy |
Type |
Journal Article |
| Year |
2016 |
Publication |
Biological Conservation |
Abbreviated Journal |
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| Volume |
195 |
Issue |
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Pages |
156-168 |
| Keywords |
Scat analysis; Feeding ecology; Prey selection; Wolf-human conflicts |
| Abstract |
Thanks to protection by law and increasing habitat restoration, wolves (Canis lupus) are currently re-colonizing Europe from the surviving populations of Russia, the Balkan countries, Spain and Italy, raising the need to update conservation strategies. A major conservation issue is to restore connections and gene flow among fragmented populations, thus contrasting the deleterious consequences of isolation. Wolves in Italy are expanding from the Apennines towards the Alps, crossing the Ligurian Mountains (northern Italy) and establishing connections with the Dinaric populations. Wolf expansion is threatened by poaching and incidental killings, mainly due to livestock depredations and conflicts with shepherds, which could limit the establishment of stable populations. Aiming to find out the factors affecting the use of livestock by wolves, in this study we determined the composition of wolf diet in Liguria. We examined 1457 scats collected from 2008 to 2013. Individual scats were genotyped using a non-invasive genetic procedure, and their content was determined using microscopical analyses. Wolves in Liguria consumed mainly wild ungulates (64.4%; in particular wild boar Sus scrofa and roe deer Capreolus capreolus) and, to a lesser extent, livestock (26.3%; in particular goats Capra hircus). We modeled the consumption of livestock using environmental features, wild ungulate community diversity, husbandry characteristics and wolf social organization (stable packs or dispersing individuals). Wolf diet varied according to years and seasons with an overall decrease of livestock and an increase of wild ungulate consumption, but also between packs and dispersing individuals with greater livestock consumption for the latter. The presence of stable packs, instead of dispersing wolves, the adoption of prevention measures on pastures, roe deer abundance, and the percentage of deciduous woods, reduced predation on livestock. Thus, we suggest promoting wild ungulate expansion, the use of prevention tools in pastures, and supporting wolf pack establishment, avoiding lethal control and poaching, to mitigate conflicts between wolf conservation and husbandry. |
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0006-3207 |
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no |
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Equine Behaviour @ team @ |
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6621 |
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| Author |
Müller, A. E.; Thalmann, U. |
| Title |
Origin and evolution of primate social organisation: a reconstruction |
Type |
Journal Article |
| Year |
2000 |
Publication |
Biological Reviews |
Abbreviated Journal |
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| Volume |
75 |
Issue |
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Pages |
405-435 |
| Keywords |
social organisation; evolution; ancestral primate; strepsirhines; nocturnal prosimians; lemurs; lorisiforms; dispersed multi-male system; promiscuity. |
| Abstract |
Abstract
The evolution and origin of primate social organisation has attracted the attention of many researchers, and a solitary pattern, believed to be present in most nocturnal prosimians, has been generally considered as the most primitive system. Nocturnal prosimians are in fact mostly seen alone during their nightly activities and therefore termed “solitary foragers”, but that does not mean that they are not social. Moreover, designating their social organisation as “solitary”, implies that their way of life is uniform in all species. It has, however, emerged over the last decades that all of them exhibit not only some kind of social network but also that those networks differ among species. There is a need to classify these social networks in the same manner as with group-living (gregarious) animals if we wish to link up the different forms of primate social organisation with ecological, morphological or phylogenetic variables. In this review, we establish a basic classification based on spatial relations and sociality in order to describe and cope properly with the social organisation patterns of the different species of nocturnal prosimians and other mammals that do not forage in cohesive groups. In attempting to trace the ancestral pattern of primate social organisation, the Malagasy mouse and dwarf lemurs and the Afro-Asian bushbabies and lorises are of special interest because they are thought to approach the ancestral conditions most closely. These species have generally been believed to exhibit a dispersed harem system as their pattern of social organisation (“dispersed” means that individuals forage solitarily but exhibit a social network). Therefore, the ancestral pattern of primate social organisation was inferred to be a dispersed harem. In fact, new field data on cheirogaleids combined with a review of patterns of social organisation in strepsirhines (lemurs, bushbabies and lorises) revealed that they exhibit either dispersed multi-male systems or dispersed monogamy rather than a dispersed harem system. Therefore, the concept of a dispersed harem system as the ancestral condition of primate social organisation can no longer be supported. In combination with data on social organisation patterns in “primitive” placentals and marsupials, and in monotremes, it is in fact most probable that promiscuity is the ancestral pattern for mammalian social organisation. Subsequently, a dispersed multi-male system derived from promiscuity should be regarded as the ancestral condition for primates. We further suggest that the gregarious patterns of social organisation in Aotus and Avahi, and the dispersed form in Tarsius evolved from the gregarious patterns of diurnal primates rather than from the dispersed nocturnal type. It is consequently proposed that, in addition to Aotus and Tarsius, Avahi is also secondarily nocturnal. |
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Equine Behaviour @ team @ |
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4257 |
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| Author |
Schino, G.; Aureli, F. |
| Title |
Reciprocity in group-living animals: partner control versus partner choice |
Type |
Journal Article |
| Year |
2016 |
Publication |
Biological Reviews |
Abbreviated Journal |
Biol Rev |
| Volume |
92 |
Issue |
2 |
Pages |
665-672 |
| Keywords |
cooperation; reciprocity; partner control; partner choice; proximate mechanisms |
| Abstract |
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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Heyes, C.M. |
| Title |
Social learning in animals: categories and mechanisms |
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Journal Article |
| Year |
1994 |
Publication |
Biological reviews of the Cambridge Philosophical Society |
Abbreviated Journal |
Biol. Rev. |
| Volume |
69 |
Issue |
2 |
Pages |
207-231 |
| Keywords |
Animals; *Behavior, Animal; Conditioning (Psychology); *Learning; Reinforcement (Psychology); *Social Behavior |
| Abstract |
There has been relatively little research on the psychological mechanisms of social learning. This may be due, in part, to the practice of distinguishing categories of social learning in relation to ill-defined mechanisms (Davis, 1973; Galef, 1988). This practice both makes it difficult to identify empirically examples of different types of social learning, and gives the false impression that the mechanisms responsible for social learning are clearly understood. It has been proposed that social learning phenomena be subsumed within the categorization scheme currently used by investigators of asocial learning. This scheme distinguishes categories of learning according to observable conditions, namely, the type of experience that gives rise to a change in an animal (single stimulus vs. stimulus-stimulus relationship vs. response-reinforcer relationship), and the type of behaviour in which this change is detected (response evocation vs. learnability) (Rescorla, 1988). Specifically, three alignments have been proposed: (i) stimulus enhancement with single stimulus learning, (ii) observational conditioning with stimulus-stimulus learning, or Pavlovian conditioning, and (iii) observational learning with response-reinforcer learning, or instrumental conditioning. If, as the proposed alignments suggest, the conditions of social and asocial learning are the same, there is some reason to believe that the mechanisms underlying the two sets of phenomena are also the same. This is so if one makes the relatively uncontroversial assumption that phenomena which occur under similar conditions tend to be controlled by similar mechanisms. However, the proposed alignments are intended to be a set of hypotheses, rather than conclusions, about the mechanisms of social learning; as a basis for further research in which animal learning theory is applied to social learning. A concerted attempt to apply animal learning theory to social learning, to find out whether the same mechanisms are responsible for social and asocial learning, could lead both to refinements of the general theory, and to a better understanding of the mechanisms of social learning. There are precedents for these positive developments in research applying animal learning theory to food aversion learning (e.g. Domjan, 1983; Rozin & Schull, 1988) and imprinting (e.g. Bolhuis, de Vox & Kruit, 1990; Hollis, ten Cate & Bateson, 1991). Like social learning, these phenomena almost certainly play distinctive roles in the antogeny of adaptive behaviour, and they are customarily regarded as 'special kinds' of learning (Shettleworth, 1993).(ABSTRACT TRUNCATED AT 400 WORDS) |
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Department of Psychology, University College London |
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English |
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1464-7931 |
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PMID:8054445 |
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no |
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refbase @ user @ |
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708 |
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Smolla, M.; Alem, S.; Chittka, L.; Shultz, S. |
| Title |
Copy-when-uncertain: bumblebees rely on social information when rewards are highly variable |
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Journal Article |
| Year |
2016 |
Publication |
Biology letters |
Abbreviated Journal |
Biol. Lett. |
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12 |
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6 |
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To understand the relative benefits of social and personal information use in foraging decisions, we developed an agent-based model of social learning that predicts social information should be more adaptive where resources are highly variable and personal information where resources vary little. We tested our predictions with bumblebees and found that foragers relied more on social information when resources were variable than when they were not. We then investigated whether socially salient cues are used preferentially over non-social ones in variable environments. Although bees clearly used social cues in highly variable environments, under the same conditions they did not use non-social cues. These results suggest that bumblebees use a 'copy-when-uncertain' strategy. |
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Equine Behaviour @ team @ |
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6198 |
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