Search for dissertations about: "expensive tissue"

Showing result 1 - 5 of 15 swedish dissertations containing the words expensive tissue.

  1. 1. The link between brain size, cognitive ability, mate choice and sexual behaviour in the guppy (Poecilia reticulata)

    Author : Alberto Corral López; Niclas Kolm; Janette Boughman; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; sexual selection; artificial selection; brain evolution; optomotor test; decision-making; discrimination; assessment; optimal decisions; rational choice; behavioural flexibility; expensive tissue; predation; sex ratio; OSR; maintenance of variation; etologi; Ethology;

    Abstract : Competition over access for mates has led to the evolution of many striking examples of morphological traits and behaviour in animals. The rapid development of the sexual selection field in recent decades have dramatically advanced our understanding of what traits make individuals more successful in attracting mates and how preferences for mates evolve over time. READ MORE

  2. 2. Thinking in water : Brain size evolution in Cichlidae and Syngnathidae

    Author : Masahito Tsuboi; Niclas Kolm; Andrew Iwaniuk; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; brain evolution; phylogenetic comparative method; the expensive tissue hypothesis; cichlid; pipefish; seahorse; Biologi med inriktning mot zooekologi; Biology with specialization in Animal Ecology;

    Abstract : Brain size varies greatly among vertebrates. It has been proposed that the diversity of brain size is produced and maintained through a balance of adaptations to different types and levels of cognitive ability and constraints for adaptive evolution. READ MORE

  3. 3. The Spatial Context – through the lens of method development

    Author : Linda Kvastad; Joakim Lundeberg; Lars Feuk; KTH; []
    Keywords : RNA; RNA-sequencing; transcriptomics; spatial transcriptomics; single cells; pediatric brain tumors; Spatial RIN; Biotechnology; Bioteknologi;

    Abstract : In the present moment of time, we find ourselves in a period where the advancement of genomic tools is progressing at a fast pace. Of particular interest for this thesis is the study of gene activity. READ MORE

  4. 4. Quantitative Muscle Composition Analysis Using Magnetic Resonance Imaging

    Author : Anette Karlsson; Magnus Borga; Anneli Peolsson; Janne West; Todd Parrish; Linköpings universitet; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Muscle Composition; Muscle fat Infiltration; Magnetic Resonance Imaging;

    Abstract : Changes in muscle tissue composition, e.g. decrease in volume and/or increase of fat infiltration, are related to adverse health conditions such as sarcopenia, inflammation, muscular dystrophy, and chronic pain. READ MORE

  5. 5. Injuries are not accidents! : an emergency-department population-based epidemiological study of injuries with special reference to trauma recidivism hip fractures and geriatric falls

    Author : Fredrik Röding; Ulrica Bergström; Marie Lindkvist; Jack Lysholm; Per Morberg; Olle Svensson; Sari Ponzer; Umeå universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; injury; population; fractures; contusions; sprains; fall injuries; Orthopaedics; ortopedi;

    Abstract : Injury is a major public health problem. In rich countries fall injures now kill more people than all other injury mechanisms together, because of global ageing and large-scale sustainable injury prevention programs for all other injury mechanisms but falls. READ MORE