Sökning: "conspicuous display"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden conspicuous display.

  1. 1. Gloria muliebris: Elite female status competition in Mid-Republican Rome

    Författare :Lewis Webb; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; elite women; senatorial women; status; competition; status competition; glory; Ancient Rome; Republic; res publica; mid-Republican Rome; domains; resources; regulation; capital; conspicuous display;

    Sammanfattning : Elite status competition permeated mid-Republican Rome (264–133 BCE). Struggles for superiority in status among the senatorial elite catalysed social growth and conflict in the res publica: competition and the desire for glory suffused elite society. LÄS MER

  3. 2. On the protective value of conspicuous eyespots in Lepidoptera

    Författare :Adrian Vallin; Sven Jakobsson; Christer Wiklund; Graeme D. Ruxton; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ethology and behavioural ecology; Etologi och beteendeekologi;

    Sammanfattning : Eyespots, circular patterns which resemble the general appearance of the vertebrate eye, are widespread throughout the animal kingdom and are for example, commonly found on the wings of butterflies where they have been proposed to confer protection against predation. However, empirical evidence of the adaptive value of eyespots, as well as knowledge of butterfly behaviour under the threat of predation, is scarce. LÄS MER

  4. 3. Pollinators, Enemies, Drought, and the Evolution of Reproductive Traits in Primula farinosa

    Författare :Per Toräng; Jon Ågren; Johan Ehrlén; Rebecca Irwin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Ecology; Alternative reproductive strategies; climate change; facilitation; floral display; flowering phenology; frequency-dependent selection; genetic diversity; life-history strategies; local adaptation; pollination; predation; Primula farinosa; reproductive effort; soil disturbance; stochastic growth rate; Ekologi;

    Sammanfattning : In this thesis, I combined comparative and experimental approaches to examine selection on reproductive traits and population differentiation in the insect-pollinated, self-incompatible, perennial herb Primula farinosa. More specifically, I (1) determined whether the effects of floral display and interactions with pollinators and seed predators, and plant reproductive success were frequency-dependent and affected by surrounding vegetation context, (2) examined the consequences of intermittent drought years on population dynamics using numerical simulations based on demographic data collected over seven years, (3) analyzed among-population differentiation in flowering phenology and reproductive allocation, and its relationship to soil-depth at the site of origin. LÄS MER

  5. 4. The evolution of courtship rituals

    Författare :Carl Adam Wachtmeister; Innes Cuthill; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; zoologi; Zoology;

    Sammanfattning : The fact that many animals engage in highly ornamented and conspicuous display behaviours in connection with reproduction has received much attention in zoology ever since Darwin launched his theory of sexual selection. This thesis intends to investigate the evolution of such display behaviour. LÄS MER

  7. 5. Towards optimized instrument panels

    Författare :Carl Jörgen Normark; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Design; Industriell design;

    Sammanfattning : Today, automobiles are becoming more and more technologically complex, with more and more built-in driver information systems. This increases the amount and range of information the driver needs to be aware of while driving. LÄS MER