Sexual selection in gallus: Effects of morphology and dominance on female spatial behavior

Graves, H.B.; Hable, C.P.; Jenkins, Tania

doi:10.1016/0376-6357(85)90060-9

Cited by 64 publications

(38 citation statements)

References 25 publications

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“…Zayan (1992) suggests that the previous status and current agonistic state would be assessed from a set of observable cues or biophysical indicators provided by the individuals' morphological and motor patterns, visually discriminated, and interpreted using past associations with similar classes of conspecifics. Graves et al (1985) found that Gallus females in mixed-sex flocks that did not have information about male dominance status, oriented towards and stayed near high ranking males. This suggests that they could detect the quality of males from their physical characteristics and, if available, the information concerning male-male interactions.…”

Section: Discussionmentioning

confidence: 94%

Coherent use of information by hens observing their former dominant defeating or being defeated by a stranger

Hogue

Beaugrand

Laguë

1996

Behavioural Processes

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This study examines the role of observation during the formation of triads in female domestic hens. Results indicate that during hierarchy formation, a hen observing agonistic interactions and conflict settlement between its former dominant and a stranger uses this information when in turn confronted by the latter. Under a first condition (E, N=15 triads), bystanders witnessed their prior dominant being defeated by a stranger before being introduced to them. In a second condition (C1, N=16 triads), bystanders witnessed the victory of their prior dominant over a stranger. In a third condition (C2, N=15 triads), bystanders witnessed two strangers establishing a dominance relationship before being introduced to their prior dominant and to a stranger the former had just defeated. The behavioural strategies of bystanders depended on the issue of the conflict they had witnessed. Bystanders of the E condition behaved as having no chance of defeating the stranger. They never initiated an attack against it, and upon being attacked, readily submitted in turn to the stranger. On the contrary, bystanders of the C1 condition behaved as having some chances against the stranger. They initiated attacks in 50% of cases, and won 50% of conflicts against the stranger. Under condition C2, bystanders first initiated contact with the strangers in only 27% of cases, which approximates the average of their chances for defeating the stranger. However, bystanders finally defeated the strangers in 40% of cases. These results suggest that bystanders of conditions E and C1 gained some information on the relationship existing between their prior dominant and the stranger and that they used it coherently, perhaps through transitive inference, thus Hogue et al. 1996 file:///C|/Documents and Settings/Administrator/My...uments/publications/Hogue-Beaugrand-Lague-1996.htm (1 of 15) [11/30/2001 21:50:03] contributing to the existence of transitive relationships within the triads. Alternate explanations are examined.

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Section: Discussionmentioning

confidence: 94%

Coherent use of information by hens observing their former dominant defeating or being defeated by a stranger

Hogue

Beaugrand

Laguë

1996

Behavioural Processes

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“…These findings were later confirmed by Ligon et al (1990). There is also evidence that body weight correlates with social rank in cocks (Graves et al, 1985). However, Huntington Potter (1949) compared dominance relations in many chicken breeds and concluded that weight differences were not a deciding factor of dominance.…”

Section: Introductionmentioning

confidence: 92%

“…These results were more recently confirmed by Bradshaw (1992) who did not find any significant correlation between dominance and body weight in laying hens. The situation is sometimes further complicated by the fact that weight has a tendency to correlate with comb size (Graves et al, 1985;Bradshaw, 1992), which in turn correlates with dominance, thus confounding their respective contribution to dominance.…”

Section: Introductionmentioning

confidence: 99%

The role of hen's weight and recent experience on dyadic conflict outcome

Martin

Beaugrand

Laguë

1997

Behavioural Processes

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“…However, in general, the role of weight on dominance outcome in the hen is not so clear. There is evidence that body weight correlates with social rank in cocks (Graves et al, 1985). On the contrary, Huntington Potter (1949) compared many chicken breeds and concluded that weight differences were not a deciding factor upon dominance.…”

Section: Introductionmentioning

confidence: 99%

“…Such a conclusion has been more recently confirmed by Bradshaw (1992) who did not find any significant correlation between dominance and body weight in the hen. The situation gets complicated by the fact that weight often correlates with comb size (Graves et al, 1985;Bradshaw, 1992), which in turn correlates with dominance, thus confounding their respective contribution to dominance. To complicate the situation further, in the research of Martin et al (1997), comb and wattles areas were found to significantly covary with dominance outcome, but inversely with weight.…”

Section: Introductionmentioning

confidence: 99%

The role of recent experience and weight on hen's agonistic behaviour during dyadic conflict resolution

Martin¹,

Beaugrand²,

Laguë³

1997

Behavioural Processes

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Recent victory or defeat experiences and 2-hour familiarity with the meeting place were combined with size differences in order to better understand their effects on the behaviour leading to the establishment of dyadic dominance relationships between hens not previously acquainted with each other. Three kinds of encounters were videotaped: (i) a previous winner unfamiliar with the meeting place met a previous loser familiar for 2 hours with the meeting place (n = 12 dyads); (ii) as in (i) but both were unfamiliar with the meeting place (n=12); (iii) as in (i) but the previous winner was familiar with the meeting place while the previous loser was unfamiliar (n=13). The weight asymmetry was combined with these three types of encounters by selecting hens of various weight differences: in 29 dyads the recent loser was heavier than the recent winner and in 8 dyads it was the reverse. Recent experience had a major influence upon both agonistic behaviour and dominance outcome. Hens that were familiar with the meeting site initiated attacks more frequently than their unfamiliar opponent but did not win significantly more often. Recent experience and site familiarity could be used to identify 80% of future initiators. Once the first aggressive behaviour had been initiated, it led to victory of its initiator in 92% of cases. Weight was not found to influence agonistic behaviour nor dominance outcome. However, hens with superior comb and wattles areas won significantly more initial meetings than opponents with smaller ones. In the final encounters, victory also went more frequently to the bird showing larger comb and wattles, which happened also to be the previous dominant in a majority of cases. The use of higher-order partial correlations as an ex post facto control for comb and wattles indicates that they were not influential upon agonistic behaviour nor on dominance outcome, but were simply co-selected with the selection of victorious and defeated birds in the first phase of the experiment designed to let hens acquire recent victory/defeat experience.

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Sexual selection in gallus: Effects of morphology and dominance on female spatial behavior

Cited by 64 publications

References 25 publications

Coherent use of information by hens observing their former dominant defeating or being defeated by a stranger

Coherent use of information by hens observing their former dominant defeating or being defeated by a stranger

The role of hen's weight and recent experience on dyadic conflict outcome

The role of recent experience and weight on hen's agonistic behaviour during dyadic conflict resolution

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