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Visar resultat 21 - 25 av 74 avhandlingar som matchar ovanstående sökkriterier.

  1. 21. Directional aggressive pulse sounds in the bottlenose dolphin (Tursiops Truncatus) : technical aspects and social implications

    Författare :Christer Blomqvist; Kathleen Dudzinski; Linköpings universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : The ability of dolphins to produce pulse sounds with a bandwidth of up to 150 kHz, has been intensively studied with focus on their sonar capabilities, i.e. the detection, ranging and discrimination of objects of various shapes, textures and material. LÄS MER

  3. 22. Aposematism, Crypsis and Population Differentiation in the Strawberry Poison Frog

    Författare :Andreas Rudh; Anna Qvarnström; Jacob Höglund; Michael Speed; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; co-evolution; population divergence; natural selection; sexual selection; warning colouration; Oophaga pumilio; Dendrobates pumilio; aggression; explorative behaviour; colour patterns; Biologi med inriktning mot zooekologi; Biology with specialization in Animal Ecology;

    Sammanfattning : Evolutionary transitions between the two major predator avoidance strategies aposematism and crypsis are expected to be associated with changes in many important traits of animals. However, empirical studies on populations experiencing ongoing or recent transitions between these strategies are rare. LÄS MER

  4. 23. AD/HD and autism spectrum disorders in adults

    Författare :Björn Hofvander; Malmö Rättspsykiatri; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Behaviour disorders; Comorbidity; AD HD; Autism spectrum disorders; Outcome;

    Sammanfattning : Background: Attention deficit/hyperactivity disorder (AD/HD) and autism spectrum disorders (ASDs) are early-onset, but often life-time impairing, neurodevelopmental disorders. They are highly overlapping and seem to carry considerable risks of negative outcomes, psychiatrically and psychosocially. LÄS MER

  5. 24. The Molecular Mechanism of Aggression and Feeding Behaviour in Drosophila melanogaster

    Författare :Philip Goergen; Helgi Schiöth; Michael Williams; Simon Tuck; Uppsala universitet; []
    Nyckelord :Drosophila; aggression; obesity; homeostasis;

    Sammanfattning : Obesity is a complex disorder which has become a growing health concern. Twin studies have demonstrated a strong genetic component to the development of obesity and genome wide association studies have identified several genetic loci associated with it. However, most of these loci are still poorly understood in a functional context. LÄS MER

  7. 25. Antisocial behaviour in clinically referred boys : early identification and assessment procedures in child psychiatry

    Författare :Pia Enebrink; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Antisocial behaviour; conduct disorder; early identification; child psychiatry; boys; risk assessment; EARL-20B; callous-unemotional traits; predictive validity; narrative interviews;

    Sammanfattning : Background: Oppositional and aggressive behaviour in children below twelve years of age is a frequent cause of concern for parents and teachers, and a common reason for referral to child and adolescent psychiatry. Whereas most children outgrow these behaviours, a small subgroup is at risk for developing a persistent antisocial lifestyle. LÄS MER