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Author  |
Ramseyer, A.; Petit, O.; Thierry, B. |
| Title |
Decision-making in group departures of female domestic geese |
Type |
Journal Article |
| Year |
2009 |
Publication |
Behaviour |
Abbreviated Journal |
Behaviour |
| Volume |
146 |
Issue |
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Pages |
351-371 |
| Keywords |
MOVEMENT; COLLECTIVE; PRE-DEPARTURE; RECRUITMENT; ANSER DOMESTICUS |
| Abstract |
Group-living animals have to make trade-offs to reach consensus and travel together. We investigated the recruitment processes underpinning decision-making at departure in a group of 20 female domestic geese (Anser domesticus) kept in semi-free-range conditions. Two observers continuously videotaped the behaviours of the birds. Data were analyzed using multiple regression analyses. We found that decision-making was a continuous and distributed process. Departure was preceded by an increase in the arousal state of group members and their initial orientation influenced recruitment. Patterns of group movement could be predicted from the behaviours of individuals before departure. Individuals' locations, moves and signals could act as passive or communicative cues. A higher number of vocalisations and arousal behaviours led to a larger number of individuals recruited. Some individuals were more efficient than others in recruiting followers but any geese could initiate a movement. First movers recruited a higher number of mates when they had a greater number of neighbours. Not only the first mover but also the behaviours of the second and third movers prompted further individuals to follow. There was no evidence that geese were able to intentionally recruit others, rather they synchronized and adjusted each other's motives until reaching a consensus. |
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Equine Behaviour @ team @ |
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5289 |
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| Author |
Quaranta, A.; Siniscalchi, M.; Frate, A.; Vallortigara, G. |
| Title |
Paw preference in dogs: relations between lateralised behaviour and immunity |
Type |
Journal Article |
| Year |
2004 |
Publication |
Behavioural Brain Research |
Abbreviated Journal |
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| Volume |
153 |
Issue |
2 |
Pages |
521-525 |
| Keywords |
Paw preference; Lateralisation; Immunity; Dog |
| Abstract |
Paw use in a task consisting of the removal of a piece of adhesive paper from the snout was investigated in 80 mongrel and pure-bred domestic dogs (Canis familiaris). Population lateralisation was observed, but in opposite directions in the two sexes (animals were not desexed): males preferentially used their left paw, females their right paw. The relationship between immune function and paw preference was then investigated. Some immune parameters (total number of white blood cells including lymphocytes, granulocytes and monocytes; leukocyte formula; total proteins; γ-globulins) were investigated in a sample of left-pawed (n=6), right-pawed (n=6) and ambidextrous (n=6) dogs. The results showed that the percentage of lymphocytes was higher in left-pawed than in right-pawed and ambidextrous dogs, whereas granulocytes percentage was lower in left-pawed than in right-pawed and ambidextrous dogs. Moreover, total number of lymphocytes cells was higher in left-pawed than in right-pawed and ambidextrous dogs, whereas the number of γ-globulins was lower in left-pawed than in right-pawed and ambidextrous dogs. These findings represent the first evidence that brain asymmetry modulates immune responses in dogs. |
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0166-4328 |
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Equine Behaviour @ team @ |
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5783 |
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| Author |
Pusey, A. E.; Packer, C. |
| Title |
The Ecology of relationships |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Behavioural Ecology |
Abbreviated Journal |
Behav. Ecol. |
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Pages |
254 -283 |
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Blackwell Scientific Publication |
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Oxford |
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Krebs, J.R.; Davis, N.B.; |
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refbase @ user @ |
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820 |
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Proops, L.; Walton, M.; McComb, K. |
| Title |
The use of human-given cues by domestic horses, Equus caballus, during an object choice task |
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Journal Article |
| Year |
2010 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
79 |
Issue |
6 |
Pages |
1205-1209 |
| Keywords |
domestication; Equus caballus; horse; interspecific communication; marker cue; pointing; social cognition |
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Selection pressures during domestication are thought to lead to an enhanced ability to use human-given cues. Horses fulfil a wide variety of roles for humans and have been domesticated for at least 5000 years but their ability to read human cues has not been widely studied. We tested the ability of 28 horses to attend to human-given cues in an object choice task. We included five different cues: distal sustained pointing, momentary tapping, marker placement, body orientation and gaze (head) alternation. Horses were able to use the pointing and marker placement cues spontaneously but not the tapping, body orientation and gaze alternation cues. The overall pattern of responding suggests that horses may use cues that provide stimulus enhancement at the time of choice and do not have an understanding of the communicative nature of the cues given. As such, their proficiency at this task appears to be inferior to that of domestic dogs, Canis lupus familiaris, but similar to that of domestic goats, Caprus hircus. |
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0003-3472 |
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Equine Behaviour @ team @ |
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5083 |
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| Author |
Price, E.O. |
| Title |
Behavioral development in animals undergoing domestication |
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Journal Article |
| Year |
1999 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
App Anim Behav Sci |
| Volume |
65 |
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3 |
Pages |
245-271 |
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Domestication; Domestic animals; Captivity; Behavioral development; Feral; Reintroduction |
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The process of domestication involves adaptation, usually to a captive environment. Domestication is attained by some combination of genetic changes occurring over generations and developmental mechanisms (e.g., physical maturation, learning) triggered by recurring environmental events or management practices in captivity that influence specific biological traits. The transition from free-living to captive status is often accompanied by changes in availability and/or accessibility of shelter, space, food and water, and by changes in predation and the social environment. These changes set the stage for the development of the domestic phenotype. Behavioral development in animals undergoing domestication is characterized by changes in the quantitative rather than qualitative nature of responses. The hypothesized loss of certain behavior patterns under domestication can usually be explained by the heightening of response thresholds. Increases in response frequency accompanying domestication can often be explained by atypical rates of exposure to certain forms of perceptual and locomotor stimulation. Genetic changes influencing the development of the domestic phenotype result from inbreeding, genetic drift, artificial selection, natural selection in captivity, and relaxed selection. Experiential contributions to the domestic phenotype include the presence or absence of key stimuli, changes in intraspecific aggressive interactions and interactions with humans. Man's role as a buffer between the animal and its environment is also believed to have an important effect on the development of the domestic phenotype. The domestication process has frequently reduced the sensitivity of animals to changes in their environment, perhaps the single-most important change accompanying domestication. It has also resulted in modified rates of behavioral and physical development. Interest in breeding animals in captivity for release in nature has flourished in recent decades. The capacity of domestic animals to survive and reproduce in nature may depend on the extent to which the gene pool of the population has been altered during the domestication process and flexibility in behavioral development. “Natural” gene pools should be protected when breeding wild animals in captivity for the purpose of reestablishing free-living natural populations. In some cases, captive-reared animals must be conditioned to live in nature prior to their release. |
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0168-1591 |
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Equine Behaviour @ team @ |
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5663 |
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| Author |
Powell, R.A. |
| Title |
The dog: Its domestication and behavior : By . New York: Garland STPM Press (1978). 296 pp. $24.50 |
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Journal Article |
| Year |
1979 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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27 |
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Part 1 |
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318-1211 |
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2146 |
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Powell, G.V.N. |
| Title |
Experimental analysis of the social value of flocking by starlings (Sturnus vulgaris) in relation to predation and foraging |
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Journal Article |
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1974 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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22 |
Issue |
2 |
Pages |
501-505 |
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In groups of ten, indidual starlings, Sturnus vulgaris, spent significantly less time in surveillance than did individuals in smaller groups and responded more quickly than single birds to a flying model hawk. Captive starlings in flocks reduce their individual surveillance efforts, but their combined efforts still enable them to be more effective than single birds in the detection of predators. Foraging behaviour of flocks was observed by placing single starlings with groups of tricoloured blackbirds, Agelaius tricolor; the starlings reduced the time they devoted to surveillance at the same rate as if they were with other starlings. |
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2147 |
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| Author |
Powell, F.; Banks, P.B. |
| Title |
Do house mice modify their foraging behaviour in response to predator odours and habitat? |
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Journal Article |
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2004 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
| Volume |
67 |
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4 |
Pages |
753-759 |
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Predator odours and habitat structure are thought to influence the behaviour of small mammalian prey, which use them as cues to reduce risks of predation. We tested this general hypothesis for house mice, Mus domesticus, by manipulating fox odour density via addition of fox scats and habitat via patchy mowing of vegetation, for populations in 15 x 15-m field enclosures. Using giving-up densities (GUDs), the density of food remaining when an animal quits harvesting a patch, we measured foraging behaviours in response to these treatments. Mice consistently avoided open areas, leaving GUDs two to four times greater in these areas than in densely vegetated patches. However, mouse GUDs did not change in response to the addition of fox scats, even immediately after fresh scats were added. There was no interaction between fox odour and habitat use. We then tested whether habituation to fox odours had occurred, by comparing the individual responses to scats of eight mice born into enclosures with fox scats to those of eight mice born into scat-free enclosures and five wild mice. In smaller enclosures, GUDs of trays with scats did not differ from GUDs of trays without scats for any treatment. We conclude that exposure to high levels of fox odours did not alter the foraging behaviour of mice, but that mice did reduce foraging in areas where habitat was removed, perceiving predation risk to be greater in these areas than controls. We suggest further that studies using the `scat-at-trap' technique, which have shown avoidance of predator odours by mice and other small mammals, may overestimate the general avoidance of predator odours by free-living prey, which must forage with a constant background of predator odours. |
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no |
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2142 |
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Powell, A.J.; Wolff, P.R. |
| Title |
Sex differences in mouse urination patterns |
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Journal Article |
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1982 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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30 |
Issue |
4 |
Pages |
1207-1211 |
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When tested in circular open fields male and female mice (Mus musculus) produced strongly centrifugal urination patterns, which showed a clear `edge-dependency' in all the field sizes used. However, striking sex differences in the pattern of deposition were shown in terms of both the number and distribution of the urine spots. Male mice produce large numbers of spots which are regularly dispersed, while females produce relatively fewer spots with a more clumped distribution. It is suggested that a hitherto unsuspected level of intersexual communication may explain these differences. |
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2145 |
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Povinelli DJ; Nelson KE; Boysen ST |
| Title |
Comprehension of role reversal in chimpanzees: evidence of empathy? |
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Journal Article |
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1992 |
Publication |
Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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43 |
Issue |
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633 |
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Equine Behaviour @ team @ |
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3031 |
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