Sökning: "morphometrics."

Visar resultat 1 - 5 av 8 uppsatser innehållade ordet morphometrics..

  1. 1. Brain morphology and behavioural variation in relation to habitat and predation risk in minnows (Phoxinus phoxinus)

    Master-uppsats, Uppsala universitet/Limnologi; Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Marina Gallego González; [2022]
    Nyckelord :brain size; Ecology; environmental complexity; European minnow; fish; geometric morphometrics; morphological divergence; phenotypic plasticity; schooling.;

    Sammanfattning : So far, research on inter- and intraspecific teleost brain plasticity across different freshwater environments has been widely conducted. However, insights of brain morphological variation on social and predator avoidance behaviours are lacking. LÄS MER

  3. 2. Body condition assessment : as a welfare and management tool for radiated tortoises (Astrochelys radiata)

    Kandidat-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Linn Lagerström; [2020]
    Nyckelord :Tortoise; turtle; radiated tortoise; Astrochelys radiata; Geochelone radiata; body condition indices; body condition score; morphometrics;

    Sammanfattning : Body condition score (BCS) is frequently used to evaluate animal management practises for a variety of animal species in zoological collections and for production animals. The aim of this study was to apply different body condition indices and evaluate if they can be used as a welfare assessment and management tool for captive and wild critically endangered radiated tortoises (Astrochelys radiata). LÄS MER

  4. 3. Dynamics of Selachian (Shark) Dental Morphology During the Early Mesozoic

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Alexander Paxinos; [2017]
    Nyckelord :Early Mesozoic; Selachii; morphological disparity; geometric morphometrics; early radiation; Tidig Mesozoisk; Selachimorpha; morfologisk disparitet; geometrisk morfometri; tidig strålning;

    Sammanfattning : The ancestors of all modern day sharks and rays (Neoselachii) may have appeared during the Late Palaeozoic, but their major diversification happened sometime during the Early Mesozoic. Taxonomic evidence places the first neoselachian diversification in the Early Jurassic. LÄS MER

  5. 4. Poor welfare or future investment? Different growth pattern of broiler breeders

    Master-uppsats, Linköpings universitet/Biologi; Linköpings universitet/Tekniska fakulteten

    Författare :Andreas Calais; [2015]
    Nyckelord :Chicken; broiler breeder; welfare; stress; hunger; feed restriction; skip-a-day; morphometrics.;

    Sammanfattning : The parental stock of meat type chickens (broiler breeders) are commonly feed restricted to decrease their rapid growth and the issues associated with it. Among these birds, chronic hunger and stress are the most prominent welfare concerns and mass heterogeneity within flocks a major management challenge. LÄS MER

  7. 5. Diversity and Ecology of a Middle Campanian (Late Cretaceous) Marine Reptile Assemblage from Skåne, Southern Sweden

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Lena Källsten; [2015]
    Nyckelord :Landmark morphometrics; Marine amniotes; Cretaceous; Mosasauridae; Plesiosauridae; Aigialosuchus; Landmärkesbaserad morfometri; marina amnioter; Kritaperioden; Mosasauridae; Plesiosauridae; Aigialosuchus;

    Sammanfattning : This study has looked at an assemblage of fossilised teeth from Mesozoic marine amniotes from the Kristianstad basin in southern Sweden in order to make an estimate of the ecomorph diversity within said assemblage through looking at the morphology of the teeth. This was done as a pilot study to see if further studies would be able to produce worthwhile results. LÄS MER