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Showing 1 to 20 of 21 for “"dominance hierarchies"”.
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Mathematical modelling of dominance hierarchies
In this research we analyse the formation of dominance hierarchies from different viewpoints and various models of dominance hierarchy formation have been proposed, one important class being winner--loser models and another being Swiss tournaments. We start by understanding the structure of …
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Intrabrood Dominance Hierarchies in Juvenile Red-Cockaded Woodpeckers: The Role of Early Social Environment On Post-Fledging Survival and Natal Dispersal
… in quality resulting in the formation of dominance hierarchies. These hierarchies act as a mechanism for social selection by partitioning resources among group-living animals. The following chapters describe my dissertation research which investigates the factors contributing to …
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Social dominance in relation to other putative basic emotions in humans
… appears to suggest the existence of a ‘social dominance instinct’. One such finding is that across mammalian species, groups of cohabiting animals reliably organise themselves into dominance hierarchies characterised by differential allocation of social and resource holding power, and that …
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Comparative chemical ecology, behaviour, and evolutionary genetics of acanthodactlylus boskianus (Squamata: Lacertidae) : comparative chemical ecology, behaviour and evolution
… This species is territorial and males acquire dominance hierarchies in captivity. The current work included three different techniques to study the importance of femoral gland secretions in communication and signal evolution of A. boskianus. These are behaviour, chemical and DNA analyses …
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Intraspecific and Interspecific Agonistic Behavior in Chipmunks, TAMIAS MERRIAMI, T. OBSCURUS, and T. SPECIOSUS (Rodentia: Sciuridae)
… followed by T. obscurus, then T. speciosus. Dominance hierarchies were determined at three sites. There were some dominance reversals in both T. merriami and T. obscurus. No correlation was found between dominance and size, sex, or species. It was felt that the unique distribution of these …
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EFFECTS OF SOCIAL DOMINANCE ON THE MORPHOLOGICAL AND FUNCTIONAL ACTIVITY OF THE DIENCEPHALIC POSTERIOR TUBERCULAR DOPAMINERGIC NUCLEUS IN ZEBRAFISH (DANIO RERIO)
… amongst social species. It is used to establish dominance hierarchies and allocate resources crucial for survival. While aggression can stabilize social structure, it often leads to social stress among group members, and the resulting neurobiological consequences on brain structure and function …
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Co-operation and conflict in societies of the ponerine ant genus Pachycondyla
… displayed aggressive interactions and formed dominance hierarchies which predominantly served to force subordinates to forage. The frequency of queen antagonism increased with the duration since food was last added to the foraging arena. The social status was not, or only weakly associated …
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Exploring winner effects in queens of the western honey bee
… effects are also influential in the formation of dominance hierarchies. Theoretical and empirical research suggests that a winner effect can only exist in the presence of a loser effect. However, recent evidence suggests that this is not always the case. This finding prompted the present study, …
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Sociality, social learning and individual differences in rooks, jackdaws and Eurasian jays
… that rooks and jackdaws develop social bonds and dominance hierarchies, whereas Eurasian jays do not. This is most likely related to their territoriality. In two experiments using two-action tasks, jackdaws learned socially. The underlying social learning mechanism was enhancement, which fits in …
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SOCIAL ENVIRONMENT MODULATES THE FUNCTION AND NEUROENDOCRINE REGULATION OF ELECTROCOMMUNICATION SIGNALS ACROSS SPECIES OF APTERONOTID FISHES
… territorial encounters or in A. leptorhynchus dominance hierarchies may be more critical for survival and reproductive success. Individuals may not need to be as responsive in stable groups of A. balaenops. This dissertation highlights that how variation in communication maps onto variation in …
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The Mechanisms Underlying Olfactory Vicarious Fear Learning in Rats
… behaviour. In order to assess the role of dominance in the home cages, dominance hierarchies were first measured through a resource competition task in which rats competed for an appetitive resource. The conditioned demonstrator animals were placed with naïve observer animals and the …
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INFERENCE OF HIDDEN HIERARCHIES FROM OBSERVABLE NETWORKS
… reconstruction. The second part focuses on hierarchies, as we need clear understanding of what hierarchy means. We discuss why they are important within the network reconstruction framework. Chapter 2 goes through the specific characterizations for hierarchies and hierarchical systems I pick …
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Wintering white-throated sparrows (Zonotrichia albicollis): home ranges, aggression and corticosterone
… philopatric territorial flocks. Flocks exhibit dominance hierarchies, with dominance rank associated with an individual's age and prior residence in the territory. Although social behaviors within flocks are well studied, few studies have described winter home ranges. I tagged white-throated …
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Behavioural ecology of the Redbilled Woodhoopoe Phoeniculus purpureus in South Africa
… group living of woodhoopoes. Behavioural dominance hierarchies ensure that dominance relationships are well-defined among potential competitors (for breeding status), and thereby minimize disruption to flock cohesion upon the death (or removal) of a breeder. If competition for a breeding …
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An Investigation of Captive Florida Manatee (<em>Trichecus manatus latirostris</em>) Behavior and Social Interactions
… bonded groups through affiliation, or establish dominance hierarchies. Therefore, the objectives were to examine the number and type of agonistic and affiliative encounters, as well as determine if individuals within facilities developed frequent associations with certain manatees. Twenty …
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Differentiation in reproductive potential and chemical communication of reproductive status in workers and queens of the ant Myrmecia gulosa
… eusocial Hymenoptera species. In the former, the dominance hierarchies allowing for the establishment of individuals as reproductives are well understood. In contrast, the pheromonal mechanisms that help maintain their reproductive status are not understood. Similarly in "higher" ants, pheromonal …
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Patterns of intraspecific and intergeneric agonistic behavior in the male and female Mongolian gerbil (<i>Meriones unguiculatus</i>)
… female in maintaining population structure and dominance hierarchies has been underestimated, (2) intergeneric agonistic behavior is an important aspect of the gerbil’s social behavior repertoire, (3) previous experience with another species can modify the intergeneric agonistic behavior …
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How availability and quality of nectar and honeydew shape an Australian rainforest ant community
… with the concept of ant mosaics that is based on dominance hierarchies. Honeydew and nectar sources varied substantially in carbohydrate and amino acid concentration and composition (HPLC analyses). There was a strong relationship between the composition of these resources and their use by ants, …
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Understanding and mitigating seabird bycatch in the South African pelagic longline fishery
… differences in foraging behaviour and foraging dominance hierarchies. In Chapters 4 and 5 the foraging ecology of the most commonly recorded bycatch species off South Africa, the white-chinned petrel (Procellaria aequinoctialis), is investigated. An understanding of the foraging ecology of …
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Testing transitivity using inequality-constrained inference: Transitivity, probabilistic models, and inequality-constrained inference
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-12-01
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