Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"reproductive skew"”.
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Molecular ecology of hawksbill turtles Eretmochelys imbricata in the Seychelles
… than one female in the study, suggesting low reproductive skew and a large male population that is mobile and/or dispersed. Females at nesting beaches spanning 450 km comprised a single genetic stock, but males were more dispersive than females. I found that the effective size of the …
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Cooperation And Competition In Paper Wasp And Human Societies
… 2, I apply game theoretic "tug-of-war" models of reproductive skew to conflict over resource contribution and division within human groups. In chapter 1, I consider competition over individuals' personal resources. The results of a laboratory economic game support the theoretical prediction that …
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Fission-Fusion Dynamics in Spider Monkeys in Belize
… for females, paternity analysis revealed no reproductive skew, with all males siring offspring. Further analysis is needed to identify and understand the variables that are affecting the temporal changes in subgroup size, spatial cohesion, and stability of this group. However, this study …
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Reproductive Delay In The Female Cape Ground Squirrel (xerus Inauris)
… group members is fairly even (i.e. exhibits low reproductive skew), previous studies of Cape ground squirrels suggest the reproductive development of sub-adult females is inhibited by the presence of adult breeding female group mates. As reproductive delay is known to be influenced by a number of …
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Queen size dimorphism in ants
Many polymorphisms are linked to alternative reproductive strategies. In animals, this is particularly common in males. Ant queens are an important exception. The case of ant queen size dimorphisms has not been studied in sufficient detail, and thus this thesis aimed at elucidating causes and …
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Polymorphic social organisation in a eusocial insect : the ultimate and proximate causes
… is partitioned among group members - termed reproductive skew. Understanding the causes for variation in skew contributes to our understanding of social evolution because skew directly impacts on the inclusive fitness gained through cooperation. In this thesis I present a novel model system …
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The acquisition and maintenance of dominance in male and female cooperatively breeding meerkats, Suricata suricatta
In group-living species with strong reproductive skew, acquiring a position of dominance is often essential for maximising fitness, and where the frequency of lifetime dominance acquisition is low, substantial variation in fitness among individuals can arise. However, even among dominant …
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The Life History of Damaraland Mole-rats Fukomys damarensis: Growth, Ageing and Behaviour
… of mammalian sociality. With their pronounced reproductive skew, status-related contrasts in lifespan and morphology, and the suggestion of a division of labour amongst helpers, mole-rat societies have repeatedly been likened to the structurally complex societies of some eusocial insects. …
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Co-operation and conflict in societies of the ponerine ant genus Pachycondyla
… was not, or only weakly associated with the reproductive status: As predicted by the reproductive skew theory, all foundresses laid eggs at similar rates, though the subordinate may be harassed during egg laying and occasionally, some of her eggs may be eaten by the dominant. The differential …
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Paarungshäufigkeit und Aufteilung der Reproduktion bei Pachycondyla villosa
In Ameisensozietäten treten häufig Konflikte um die Reproduktion auf. Um dabei das soziale Verhalten der beteiligten Individuen und die Koloniestruktur zu verstehen ist es wichtig, die Verwandtschaftsstruktur innerhalb der Kolonien zu kennen. Diese wird durch die Paarungshäufigkeit der Königinnen, …