Sökning: "life history evolution"

Visar resultat 11 - 15 av 115 avhandlingar innehållade orden life history evolution.

1. 11. Controlling Destiny : Julian Huxley's Post-Darwinian Evolutionism and the History of Transhumanism

   Författare :Ingrid Dunér; Avdelningen för idé- och lärdomshistoria; []
   Nyckelord :HUMANIORA; HUMANITIES; Julian Huxley; post-Darwinian evolutionism; transhumanism; evolutionary biology; posthuman; sociotechnical imaginaries; control; history of science; intellectual history; history of the future; Julian Huxley; post-Darwinian evolutionism; transhumanism; evolutionary biology; posthuman; sociotechnical imaginaries; control; history of science; intellectual history; history of the future;

   Sammanfattning : The evolutionary biologist Julian Huxley (1887–1975) attempted to promote a “religion for the future,” which he would come to refer to as Transhumanism. It was Huxley’s firm belief that mankind needed a unifying system of thought that could motivate action and change. LÄS MER

3. 12. Life History and Tolerance and Resistance against Herbivores in Natural Populations of Arabidopsis thaliana

   Författare :Reiko Akiyama; Jon Ågren; Arjen Biere; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Arabidopsis thaliana; life history evolution; flowering time; germination; phenology; plant-herbivore interactions; natural selection; tolerance to leaf damage; resistance to herbivory; Plutella xylostella; Mamestra brassicae; Biology with specialization in Ecological Botany; Biologi med inriktning mot ekologisk botanik;

   Sammanfattning : In this thesis, I combined observational studies with field and greenhouse experiments to examine selection on life history traits and variation in tolerance and resistance against herbivores in natural populations of the annual herb Arabidopsis thaliana in its native range. I investigated (1) phenotypic selection on flowering time and plant size, (2) the effects of timing of germination on plant fitness, (3) the effect of leaf damage on seed production, and (4) correlations between resistance against a specialist and a generalist insect herbivore. LÄS MER

4. 13. A functional genomic investigation of an alternative life history strategy : The Alba polymorphism in Colias croceus

   Författare :Alyssa Woronik; Christopher Wheat; Antonia Monteiro; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; alternative life history strategy; butterfly wing color; Alba; Colias; color polymorphism; dimorphism; life history traits; physiology; lipidomics; genomics; pooled sequencing; phylogenomics; RNA-Seq; Pool-Seq; populationsgenetik; Population Genetics;

   Sammanfattning : Life history traits affect the timing and pattern of maturation, reproduction, and survival during an organism’s lifecycle and are the major components influencing Darwinian fitness. Co-evolved patterns of these traits are known as life history strategies (LHS) and variation occurs between individuals, populations, and species. LÄS MER

5. 14. Telomeres in ecology and evolution: Hypotheses and connections between telomere length, infections and life history trade-offs

   Författare :David Gomez Blanco; MEMEG; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; telomeres; life history; telomere elongation; telomere shortening; early-life telomere length; critical threshold; malaria infection; great reed warbler; Acrocephalus arundinaceus;

   Sammanfattning : Studying life history strategies is crucial for understanding the diversity among organisms. The trade-offs in traits related to survival, self-maintenance and reproduction play an important role in the variation of life histories and can be adjusted in response to environmental and physiological factors. LÄS MER

7. 15. I köttbullslandet : Konstruktionen av svenskt och utländskt på det kulinariska fältet

   Författare :Jonathan Metzger; Satya Datta; Ulf Jonsson; Kirsti Niskanen; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Food; cuisine; national myth; national culture; national cuisine; ideology; discourse; rhetoric; consumption; communities of consumption; authenticity; Sweden; cooking; cookbooks; culinary arts; culinary field; gastronomic field; gastronomy; nationalism; national identity; Economic history; Ekonomisk historia;

   Sammanfattning : The purpose of this doctorate thesis is to investigate the historical discursive construction of swedishness and foreignness in the Swedish culinary field, primarily during the period of 1900-1970, and to relate the changes in the articulation of these concepts to the overarching ideological shifts during this time-period. To achieve this objective a conceptual apparatus inspired by cultural studies, discourse analysis and rhetorical analysis is employed upon the primary material, which consists of Swedish- and foreign-signified cookbooks published in Sweden during the period of 1600-1970. LÄS MER