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Author Rubenstein, D. I.; Hack, M. A.
Title Horse signals: The sounds and scents of fury Type Journal Article
Year 1992 Publication Evolutionary Ecology Abbreviated Journal Evol. Ecol.
Volume 6 Issue 3 Pages 254-260
Keywords ommunication – combat – fighting ability – individual identity – signals – information – assessment – displays
Abstract During contests animals typically exchange information about fighting ability. Among feral horses these signals involve olfactory or acoustical elements and each type can effectively terminate contests before physical contact becomes necessary. Dung transplant experiments show that for stallions, irrespective of rank, olfactory signals such as dung sniffing encode information about familiarity suggesting that such signals can be used as signatures. As such they can provide indirect information about fighting ability as long as opponents associate identity with past performance. Play-back experiments, however, show that vocalizations, such as squeals, directly provide information about status regardless of stallion familiarity. Sonographs reveal that squeals of dominants are longer than those of subordinates and that only those of dominants have at their onset high-frequency components.
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Call Number (up) refbase @ user @ Serial 506
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Author Sharp, T.; Saunders, G.
Title mustering of feral horses Type Manuscript
Year Publication Ecology Abbreviated Journal
Volume Issue Pages
Keywords
Abstract Background

Feral horses (Equus caballus) can cause significant environmental damage and losses to

rural industries. Although considered pests, feral horses are also a resource, providing

products such as pet meat for the domestic market and meat for human consumption

for the export market. Control methods include trapping, mustering exclusion fencing,

ground shooting and shooting from helicopters.

Feral horses are mustered by helicopter, motorbike or on horseback, sometimes with the

assistance of coacher horses. Once mustered into yards, net traps or fenced paddocks, the

horses are usually sold to abattoirs for slaughter which can offset the costs of capture and

handling. Less commonly, they are sold as riding horses or relocated to reserves or horse

sanctuaries. Where there is no market for them or where removal may be too costly or

impractical e.g. in conservation areas or remote areas without access to transportation,

horses are sometimes destroyed by shooting in the yards.

This standard operating procedure (SOP) is a guide only; it does not replace or

override the legislation that applies in the relevant State or Territory jurisdiction.

The SOP should only be used subject to the applicable legal requirements (including

OH&S) operating in the relevant jurisdiction.
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Call Number (up) refbase @ user @ Serial 517
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Author Dugatkin, L.A.; Earley, R.L.
Title Group fusion: the impact of winner, loser, and bystander effects on hierarchy formation in large groups Type Journal Article
Year 2003 Publication Behavioral Ecology Abbreviated Journal Behav. Ecol.
Volume 14 Issue 3 Pages 367-373
Keywords
Abstract We present the results of a series of computer simulations that examined the impact of winner, loser, and bystander effects on hierarchy formation in fused groups. These effects and their implications for hierarchy structure and aggressive interactions were first examined in small four-member groups. Subsequent to this, the two small groups were fused into a single larger group. Further interactions took place in this fused group, generating a new hierarchy. Our models demonstrate clearly that winner, loser, and bystander effects strongly influence both the structure and types of interactions that emerge from the fusion of smaller groups. Four conditions produced results in which the same general patterns were uncovered in pre- and postfusion groups: (1) winner effects alone, (2) bystander loser effects alone, (3) winner and bystander winner effects operating simultaneously, and (4) all four effects in play simultaneously. Outside this parameter space, hierarchy structure and the nature of aggressive interactions differed in pre- and postfusion groups. When only loser effects were in play, one of the two clear alphas from the prefused groups dropped in rank in the eight-member fused group. When bystander winner effects were in play, it was difficult to rank any of the eight individuals in the fused group, and players interacted almost exclusively with those that were not in their original four-member group. When loser and bystander loser effects operated simultaneously, two top-ranking individuals emerged in the fused groups, but the relative rank of the other players was difficult to assign.
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Notes 10.1093/beheco/14.3.367 Approved no
Call Number (up) refbase @ user @ Serial 519
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Author FitzGibbon, C. D.
Title The costs and benefits of predator inspection behaviour in Thomson's gazelles Type Journal Article
Year 1994 Publication Behavioral Ecology and Sociobiology Abbreviated Journal Behav. Ecol. Sociobiol.
Volume 34 Issue 2 Pages 139-148
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Notes Approved no
Call Number (up) refbase @ user @ Serial 524
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Author Dugatkin, L.A.
Title Tendency to inspect predators predicts mortality risk in the guppy (Poecilia reticulata) Type Journal Article
Year 1992 Publication Behavioral Ecology Abbreviated Journal Behav. Ecol.
Volume 3 Issue 2 Pages 124-127
Keywords
Abstract Although predator inspection behavior in fishes has become a model system for examining game theoretical strategies such as Tit for Tat, the direct costs of inspection behavior have not been quantified. To begin quantifying such costs, I conducted an experiment that examined mortality due to predation as a function of predator inspection in the guppy (Poecilia reticulata). Before being subjected to a “survivorship” experiment, guppies were assayed for their tendency to inspect a predator. Groups were then composed of six guppies that differed in their tendency to inspect. These groups were placed into a pool containing a predator, and survivorship of guppies with different inspection tendencies was noted 36 and 60 h later. Results indicate that individuals that display high degrees of inspection behavior suffer greater mortality than their noninspecting shoalmates.
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Notes 10.1093/beheco/3.2.124 Approved no
Call Number (up) refbase @ user @ Serial 526
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Author ANGLE M, et al
Title Androgenes in feral stallions Type Conference Volume
Year 1979 Publication Symposium on the Ecology and Behavior of wild and feral Equids Abbreviated Journal
Volume Issue Pages 31-38
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Abstract
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Publisher Place of Publication Laramie Editor
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Notes from Prof. Hans Klingels Equine Reference List Approved no
Call Number (up) refbase @ user @ Serial 641
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Author Kavaliers, M.; Colwell, D.D.; Choleris, E.
Title Kinship, familiarity and social status modulate social learning about “micropredators” (biting flies) in deer mice Type Journal Article
Year 2005 Publication Behavioral Ecology and Sociobiology Abbreviated Journal Behav. Ecol. Sociobiol.
Volume 58 Issue 1 Pages 60-71
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Call Number (up) refbase @ user @ Serial 710
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Author R. A. J. Taylor
Title The Behavioural Basis of Redistribution I. The Delta -Model Concept Type Journal Article
Year 1981 Publication The Journal of Animal Ecology Abbreviated Journal T. J. Anim. Ecol.
Volume 50 Issue 2 Pages 573-586
Keywords
Abstract (1) A conceptual model is developed in which spatial behaviour is density-dependent. The behaviour is classified as congregatory or migratory according to whether it results in movement towards or away from population concentrations. (2) Spatial behaviour is shown to result from both individual and population interactions. (3) The stability properties of the model are explored and it is shown how, under particular conditions, populations obeying the model have a population density regulating mechanism. (4) The similarity between the model and the potential energy curve of physics is noted, but it is emphasized that this is a behavioural not a physical model.
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Call Number (up) refbase @ user @ Serial 720
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Author Berger, J.
Title Organizational systems and dominance in feral horses in the Grand Canyon Type Journal Article
Year 1977 Publication Behavioral Ecology and Sociobiology Abbreviated Journal Behav. Ecol. Sociobiol.
Volume 2 Issue 2 Pages 131-146
Keywords
Abstract 1. Several aspects of the behavioral ecology of feral horses (Equus caballus) were studied in Grand Canyon, Arizona, USA. Most bands contained three to five horses that included one stallion and his harem. Males that did not obtain a harem remained solitary. Throughout the study bands remained stable in composition.

2. Home ranges for all bands decreased in size in successive warm months, probably due to increased ambient temperature and drought. This resulted in greater utilization of spring areas that led to increased interband confrontation and agonistic display.

3. Territoriality was not observed in individual horses or bands, but bands hierarchial in both inter- and intraband structures. Interband stallion dominance was reinforced through posturing and fighting. Intraband hierarchies, as determined by dominance coefficients, were independent of individual size in three of four bands.

4. Indexes of nervousness (NER), calculated while horses were drinking, showed that stallions were less nervous than mares. A low NER was correlated with individuals leading toward drinking areas, whereas a high NER existed in individuals initiating flight although no single horse acted consistently as a leader.

5. Diurnal activity patterns were correlated with ambient temperatures.
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Call Number (up) refbase @ user @ Serial 748
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Author Houston, A.I.; McNamara, J.M.
Title Fighting for food: a dynamic version of the Hawk-Dove game Type Journal Article
Year 1988 Publication Evolutionary Ecology Abbreviated Journal Evol. Ecol.
Volume 2 Issue 1 Pages 51-64
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Notes Approved no
Call Number (up) refbase @ user @ Serial 750
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