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  1. Social facilitation of predatory, sheep-chasing behaviour in Norwegian Elkhounds, grey

    Contributor(s):: Christiansen, F. O., Bakken, M., Braastad, B. O.

    Sheep grazing on unfenced mountain pasture may be attacked by loose dogs, which may chase and kill sheep and separate lambs from their mothers. We have earlier shown that testing dogs individually towards sheep with an electronic dog collar may effectively reduce the chasing propensity 1 year...

  2. Variation in behavioural responses of ewes towards predator-related stimuli

    Contributor(s):: Hansen, I., Christiansen, F., Hansen, H. S., Braastad, B., Bakken, M.

    Thirty-two groups of six sheep, classified into three breed categories according to their weight class (L: light, one breed (n=7); M: medium light, two breeds (n=10); H: heavy, three breeds (n=15)) were tested for antipredatory behaviour towards seven stimulus regimes. Tests were performed on...

  3. Review of 'Hunter and Hunted: Relationships between Carnivores and People'

    Contributor(s):: Sillero-Zubiri, Claudio

  4. Thiabendazole-based taste aversions in dingoes (Canis familiaris dingo) and New Guinea wild dogs (Canis familiaris hallstromi)

    Contributor(s):: Gustavson, C. R., Gustavson, J. C., Holzer, G. A.

    Two experiments were conducted on captive dingoes and New Guinea wild dogs. Of 14 dogs fed tiabendazole-treated lamb (1 g-300 g meat), only one continued to consume untreated lamb meat. All 5 dogs which were fed untreated lamb continued to consume all of the lamb presented. Clearly, tiabendazole...

  5. Behavioural patterns in ewe-lamb pairs and vulnerability to predation by wolverines

    Contributor(s):: May, R., Dijk, J. van, Forland, J. M., Andersen, R., Landa, A.

    In Norway domestic sheep Ovis aries range unattended in mountainous areas during the summer season. Wolverines Gulo gulo re-established in the alpine regions of southern Norway during recent decades and are viewed as a substantial predator on lambs. Reducing predation on sheep by wolverines would...

  6. Conditioned food aversion to eggs in captive-reared ferrets, Mustela furo : a test of seven potential compounds

    Contributor(s):: Norbury, G., O'Connor, C., Byrom, A.

    Much of New Zealand's native fauna is threatened by introduced mammalian predators. We tested whether conditioned food aversion (i.e. avoidance of particular prey items subsequent to exposure to the same foods that contain an illness-inducing compound) could reduce consumption of birds' eggs by...

  7. The behavioural responses of Nile tilapia ( Oreochromis niloticus ) to anti-predator training

    Contributor(s):: Mesquita, F. de O., Young, R. J.

    Globally millions of fishes are released, each year, into the wild to supplement diminishing populations. However, research indicates that less than 5% of these individuals survive, and that one of the major causes of mortality is predation. The objective of the experiment was to develop a...

  8. The efficacy of an ultrasonic cat deterrent

    Contributor(s):: Nelson, S. H., Evans, A. D., Bradbury, R. B.

    Ultrasound deterrents for a variety of mammals, including cats, are widely available in the commercial market, but few have been independently tested for efficacy. This study tested the efficacy of an ultrasonic cat deterrent 'Catwatch copyright ', using 63 and 96 volunteer observers in two...

  9. The efficacy of collar-mounted devices in reducing the rate of predation of wildlife by domestic cats

    Contributor(s):: Nelson, S. H., Evans, A. D., Bradbury, R. B.

    Volunteer cat owners from across the UK were recruited to take part in two trials designed to test the efficacy of collar-mounted warning devices in reducing cat predation rates of native wildlife. Cats equipped with a bell returned 34% fewer mammals and 41% fewer birds than those with a plain...

  10. The influence of hunger on object play by adult domestic cats

    Contributor(s):: Hall, S. L., Bradshaw, J. W. S.

    The hypothesis that object play by adult domestic cats may be indistinguishable from predatory behaviour at the motivational level was investigated by examining the effect of hunger on play. Cats were presented with either a large toy or a small toy, either 0 h and 16 h after their last meal. The...

  11. Differences in ewe and wether behavior when bonded to cattle

    Contributor(s):: Anderson, D. M., Estell, R. E., Havstad, K. M., Shupe, W. L., Libeau, R., Murray, L. W.

    The intra- and inter-species associations of cattle and sheep grazing the same pasture were investigated. Under mixed stocking, sheep did not associate with cattle; however, sheep consistently stayed close to (bond) and followed cattle if they were forced in close association with cattle at an...

  12. Domestic cat predation on vampire bats ( Desmodus rotundus ) while foraging on goats, pigs, cows and human beings

    Contributor(s):: Delpietro, H., Konolsaisen, F., Marchevsky, N., Russo, G.

    The cat was seen to capture the bat mainly at the moment of it approaching its prey or when the prey defended itself or after feeding when the weight of the bat's ingesta hindered the bat from escape. The cat and the livestock exhibited a mutually beneficial partnership; the cat increased its...

  13. Protecting egg prey from Carrion Crows: the potential of aversive conditioning

    Contributor(s):: Cox, R., Baker, S. E., Macdonald, D. W., Berdoy, M.

    Carrion Crows, Corvus corone, are held responsible for taking the eggs and chicks of many bird species. In areas of conservation significance, intervention may be required. Traditionally, managers have attempted to control predation by killing predators, but this may not be the most effective or...

  14. Will free-ranging predators stop depredating untreated eggs in pulegone-scented gull nests after exposure to pulegone-injected eggs?

    Contributor(s):: Conover, M. R., Lyons, K. S.

    Pulegone is a chemical derived from plants of the mint family (Mentha spp.) that irritates the trigeminal nerve of mammals when inhaled and causes gastric distress when consumed. We examined whether free-ranging mammalian predators would stop depredating untreated eggs in gulls' nests that...

  15. The impact of anthropogenic factors on the behavior, reproduction, management and welfare of urban, free-roaming cat populations

    Contributor(s):: Finkler, H., Hatna, E., Terkel, J.

    Free-roaming domestic cats constitute an integral part of many urban ecosystems worldwide; their presence results from undisturbed natural reproduction, abandonment by pet owners, and abundant food resources. These cats present controversial and emotional issues regarding management of their high...

  16. A model to quantify the anticipatory response in cats

    Contributor(s):: Tami, G., Martorell, A., Torre, C., Compagnucci, M., Manteca, X.

    The aim of this paper was to develop a protocol to study the anticipatory response in cats as a measure of welfare. Seven experimental cats were trained in a classical conditioning paradigm to associate a sound with food arrival, while sound and food were presented without contingency in four...

  17. How has the risk of predation shaped the behavioural responses of sheep to fear and distress?

    Contributor(s):: Dwyer, C. M.

    To use behaviours as indicators of stress it is important to understand their underlying causation. For a prey animal in the wild, such as a sheep, behavioural responses have evolved to evade detection and capture by predators. The behavioural responses of the wild ancestors of domestic sheep to...

  18. Maintaining behavioural diversity in captivity for conservation: natural behaviour management

    Contributor(s):: Rabin, L. A.

  19. Non-lethal control of fox predation: the potential of generalised aversion

    Contributor(s):: Macdonald, D. W., Baker, S. E.

    Traditionally, game-keepers and agriculturalists have controlled predators using lethal methods, but there are circumstances under which these may be ineffective or inappropriate for animal welfare or conservation reasons. Generalised aversion is potentially a form of non-lethal control, in which...

  20. Structural enrichment and enclosure use in an opportunistic carnivore: the red fox ( Vulpes vulpes )

    Contributor(s):: Kistler, C., Hegglin, D., Wurbel, H., Konig, B.

    An increasing number of zoos keep their animals in natural-looking enclosures, but it is often unclear whether or not the species' behavioural and ecological needs are being adequately met. For species that suffer predation in the wild, structural enrichment in captivity can play a crucial role...