Sökning: "Johan Höjesjö"

Hittade 3 avhandlingar innehållade orden Johan Höjesjö.

  1. 1. Intraspecific divergence and phenotypic plasticity in behavioural profiles of teleost fish

    Författare :Johanna Axling; Svante Winberg; Johan Höjesjö; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; animal personality; phenotypic plasticity; Salmo salar; Danio rerio; activity; boldness; aggression.; Biology with specialization in Comparative Physiology; Biologi med inriktning mot jämförande fysiologi;

    Sammanfattning : Behavioural differences between and within individuals can greatly affect the outcome of behavioural studies. In addition, behavioural interactions between individuals can compromise the health and welfare of captive fish. LÄS MER

  3. 2. Conservation ecology of the thick-shelled river mussel Unio crassus : The importance of parasite-host interactions

    Författare :Lea Dominique Schneider; E. Martin Österling; P. Anders Nilsson; Johan Höjesjö; Caryn Vaughn; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Endangered species; freshwater mussels; host fish species; parasite-host; river; stream; Unio crassus; Unionoida; Biology; Biologi;

    Sammanfattning : Unionoid mussels are globally threatened and their conservation requires species-specific knowledge on their ecology and parasite-host interaction. Unio crassus is one of Europe’s most threatened unionoid species and has a temporary obligate parasitic life stage (glochidia) on fish. LÄS MER

  4. 3. On the abundance and distribution of organisms in fragmented riverscapes : Insights From Studies On Different Species And Spatiotemporal Scales

    Författare :Carl Tamario; Anders Forsman; Petter Tibblin; Erik Petersson; Johan Höjesjö; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Evolutionary Biology; Evolutionsbiologi;

    Sammanfattning : Dams in rivers modify the habitats and hinder dispersal and migration. Since moving around is an essential part of most organisms’ life histories, this represents a new regime for life in freshwater. LÄS MER