scholarly journals The Performance of Dominance Indices for Constructing Dominance Hierarchies in Mischocyttarus and Polistes Wasps (Hymenoptera, Vespidae)

2011 ◽  
Vol 94 (4) ◽  
pp. 869-873 ◽  
Author(s):  
André Rodrigues de Souza ◽  
Bárbara Bruna Muniz Figueiredo ◽  
Bruna Ribeiro ◽  
Roberta Pinheiro ◽  
Luciana Justino ◽  
...  
Keyword(s):  
Dominance Hierarchies ◽  
Polistes Wasps ◽  
Dominance Indices

scholarly journals Understanding testosterone variation in a tropical lek-breeding bird

2011 ◽  
Vol 7 (4) ◽  
pp. 506-509 ◽  
Author(s):  
Thomas B. Ryder ◽  
Brent M. Horton ◽  
Ignacio T. Moore
Keyword(s):  
Social Status ◽  
Strong Predictor ◽  
Breeding Birds ◽  
Male Dominance ◽  
Surprising Result ◽  
Breeding Bird ◽  
Dominance Hierarchies ◽  
Testosterone Levels ◽  
Male Display ◽  
Pipra Filicauda

Male reproductive coalitions, in which males cooperate to attract females, are a rare strategy among vertebrates. While some studies have investigated ultimate aspects of these relationships, little is known about the mechanistic role that hormones play in modulating cooperative behaviours. Here, we examined male testosterone variation in a tropical lekking bird, the wire-tailed manakin ( Pipra filicauda ), which exhibits cooperative male–male display coalitions. We found that testosterone levels in territorial males were comparable to those of temperate breeding birds, a surprising result given their environmental, social and reproductive dynamics. In addition, social status rather than plumage was a strong predictor of testosterone variation. Territorial males had significantly higher testosterone levels than did two other plumage classes of floater males, who do not hold territories. We hypothesize that testosterone variation plays an important role in the establishment of male dominance hierarchies (competition), while concurrently facilitating stable display partnerships (cooperation).

How information about individual pigs can help to reduce aggression and injuries after mixing

1996 ◽  
Vol 1996 ◽  
pp. 12-12
Author(s):  
H.W. Erhard ◽  
M. Mendl ◽  
D.D. Ashley
Keyword(s):  
Negative Effects ◽  
Dominance Hierarchies ◽  
Low Levels ◽  
Pig Husbandry

Dominance hierarchies are commonly observed in groups of pigs (Beilharz & Cox 1967). These hierarchies appear to be established by individuals assessing each other's relative abilities, usually through fighting (Rushen & Pajor 1987). The resulting aggression is a well documented problem in pig husbandry. It could be reduced by mixing pigs who differ in certain respects, such that they rapidly form a hierarchy without vigorous fighting. Hessing et al. (1994) found that mixing pigs who showed high levels of resistance to being placed on their backs in a “back test” with pigs who were less resistant resulted in low levels of aggression. In this study we investigated whether mixing pigs which differ in their aggressiveness could reduce the negative effects of regrouping.

Linear Dominance Hierarchies in Female Grass Shrimp Palaemon pugio

2021 ◽  
pp. 000-000
Author(s):  
Samuel D. Rappaport ◽  
Joshua P. Lord
Keyword(s):  
Grass Shrimp ◽  
Dominance Hierarchies

Dominance hierarchies in group-living cleaning gobies: causes and foraging consequences

2004 ◽  
Vol 67 (2) ◽  
pp. 239-247 ◽  
Author(s):  
Elizabeth A Whiteman ◽  
Isabelle M Côté
Keyword(s):  
Group Living ◽  
Dominance Hierarchies

FEMALE DOMINANCE RELATIONSHIPS AMONG CAPTIVE WESTERN LOWLAND GORILLAS: COMPARISONS WITH THE WILD

Behaviour ◽  
1999 ◽  
Vol 136 (10-11) ◽  
pp. 1283-1310 ◽  
Author(s):  
Joan Lockard ◽  
Jennifer Scott
Keyword(s):  
Natural Habitat ◽  
High Energy ◽  
Gorilla Gorilla ◽  
Female Dominance ◽  
Primate Species ◽  
Dominance Hierarchies ◽  
Mountain Gorillas ◽  
Dominance Relationships ◽  
Western Lowland Gorillas ◽  
Lowland Gorillas

AbstractFemale dominance relationships were studied among three family groups of western lowland gorillas (Gorilla gorilla gorilla) housed in large enclosures at Howletts Wild Animal Park, in Kent, England. In common with gorillas in their natural habitat, the Howletts gorillas forage throughout the day on low nutrient foods. However, the latter differ, at least from mountain gorillas (Gorilla gorilla beringei), in that they also have relatively frequent access to high nutrient, high energy novel food items which are patchily distributed in time and space, and defendable. It was predicted that, despite these differences, the Howletts females would resemble mountain gorillas in forming adult female dominance hierarchies (determined from supplant interactions) in which older females that have lived in the group the longest are dominant to younger females, more recent to the group. The comparison was made with mountain gorillas as they are the only gorilla subspecies for which such data exist for wild-living populations. As predicted, an age/tenure-based dominance hierarchy was found to be the case for those groups at Howletts where there was considerable variation between the females' ages and length of group tenure. As gorillas and chimpanzees resemble more closely each other in forming age/tenure-based dominance hierarchies than they do other female-transfer primate species, it is proposed that the gorilla-chimpanzee pattern may have common phylogenetic origins. In addition, the order of progression of gorillas into their indoor living quarters appears to be a good indicator of supplant-dominance relationships among adult group members. It was also found that, despite being removed from their natural habitat, dominant males in captivity still lead their groups during group travel in the same manner that do males in the wild: either at the head, or bringing up the rear. Though primate social behaviour may be flexible depending on immediate context and life history variables, this flexibility may well remain within evolutionarily defined parameters, leading to species-typical patterns in general social interactions.

Mother–infant attachment, musical idol worship, and the origins of human behaviour

2018 ◽  
Vol 22 (4) ◽  
pp. 474-493 ◽  
Author(s):  
Richard Parncutt
Keyword(s):  
Later Life ◽  
Emotional States ◽  
Altered States ◽  
Human Infants ◽  
Infant Attachment ◽  
Dominance Hierarchies ◽  
States Of Consciousness ◽  
Evolutionary Response ◽  
And Coping ◽  
By Products

Actors, sportspeople, and politicians may be idolised for their appearance, personality, skills, or ideals. The idolisation of musicians additionally involves transcendental musical emotions. Fans devote extraordinary amounts of time, energy and money to following, empathising with, identifying with and imitating their idols. During great performances, fans experience altered states of consciousness. Existing evolutionary approaches can explain social dominance hierarchies but not specific fan behaviours. Another approach involves the mother schema: the perceptions, cognitions, and emotions that the late foetus and early infant (3rd and 4th trimesters) associate with the mother and her changing behaviours and physical/emotional states. The mother schema was an evolutionary response to the fragility (altriciality) of human infants, born earlier due to a larger brain and upright gait. Active reciprocal interactions between infants and carers (e.g. motherese) involve both the carer’s infant schema and the infant’s mother schema. In later life, the typical emotions of the mother schema are evoked by stimulus patterns reminiscent of the mother as perceived by the infant. In ritual situations, where the focus is on shared subjectivity, similar patterns and emotions are created. Evolutionary by-products of the mother schema include musical behaviours, religious behaviours and musical idol worship. The theory can explain why musical idols are perceived as all-loving, all-knowing and/or all-powerful, and is consistent with psychosocial functions of music and religion such as social cohesion and identity, collective motivation, empathy and mood regulation, catharsis and coping, distraction and entertainment, conflict resolution, and skill transfer.

scholarly journals Self-organizing dominance hierarchies in a wild primate population

2015 ◽  
Vol 282 (1814) ◽  
pp. 20151512 ◽  
Author(s):  
Mathias Franz ◽  
Emily McLean ◽  
Jenny Tung ◽  
Jeanne Altmann ◽  
Susan C. Alberts
Keyword(s):  
Individual Differences ◽  
Social Dynamics ◽  
Experimental Studies ◽  
Self Organization ◽  
Social Self ◽  
Dominance Hierarchies ◽  
Change Over Time ◽  
Winner And Loser Effects ◽  
The Social ◽  
Over Time

Linear dominance hierarchies, which are common in social animals, can profoundly influence access to limited resources, reproductive opportunities and health. In spite of their importance, the mechanisms that govern the dynamics of such hierarchies remain unclear. Two hypotheses explain how linear hierarchies might emerge and change over time. The ‘prior attributes hypothesis’ posits that individual differences in fighting ability directly determine dominance ranks. By contrast, the ‘social dynamics hypothesis’ posits that dominance ranks emerge from social self-organization dynamics such as winner and loser effects. While the prior attributes hypothesis is well supported in the literature, current support for the social dynamics hypothesis is limited to experimental studies that artificially eliminate or minimize individual differences in fighting abilities. Here, we present the first evidence supporting the social dynamics hypothesis in a wild population. Specifically, we test for winner and loser effects on male hierarchy dynamics in wild baboons, using a novel statistical approach based on the Elo rating method for cardinal rank assignment, which enables the detection of winner and loser effects in uncontrolled group settings. Our results demonstrate (i) the presence of winner and loser effects, and (ii) that individual susceptibility to such effects may have a genetic basis. Taken together, our results show that both social self-organization dynamics and prior attributes can combine to influence hierarchy dynamics even when agonistic interactions are strongly influenced by differences in individual attributes. We hypothesize that, despite variation in individual attributes, winner and loser effects exist (i) because these effects could be particularly beneficial when fighting abilities in other group members change over time, and (ii) because the coevolution of prior attributes and winner and loser effects maintains a balance of both effects.

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