Sökning: "Teleost"

Hittade 5 uppsatser innehållade ordet Teleost.

  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. Selective serotonin reuptake inhibitors in the Baltic Sea region : The effects of SSRI on teleost fish

    Kandidat-uppsats, Södertörns högskola/Institutionen för naturvetenskap, miljö och teknik

    Författare :Ida Skaring; [2018]
    Nyckelord :SSRI; Teleost; Physical effect; Behavioral effect; Ecological impact;

    Sammanfattning : Pharmaceuticals, enter the aquatic environments through sewage treatment plants and may affect fish. This examination paper is a literature study that focuses on Selective serotonin reuptake inhibitors, SSRIs, exposure and the impacts on teleosts in the Baltic Sea by assessment of peer-reviewed literature and material. LÄS MER

  4. 3. Gene expression, phylogenetic and syntenic analyses of pantophysin (Pan I) and synaptophysin-like2 (Sypl2) genes in Atlantic cod (Gadus morhua L.)

    Master-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Suzana Stjelja; [2012]
    Nyckelord :Gene expression; fish; evolution; phylogeny;

    Sammanfattning : The pantophysin (Pan I) locus reveals differences between Norwegian coastal cod (NCC) and Northeast Arctic cod (NEAC) populations that are highly significant, temporally stable and larger than for any other genetic marker. However, the biochemical basis for the selection and the functional role of pantophysin in fishes are unknown. LÄS MER

  5. 4. Molecular evolution of voltage-gated calcium channels of L and N types and their genomic regions

    Master-uppsats, Institutionen för biologisk grundutbildning

    Författare :Jenny Widmark; [2012]
    Nyckelord :Evolution; vertebrate; voltage-gated calcium channel; whole genome duplication;

    Sammanfattning : The expansion of the voltage-gated calcium channel alpha 1 subunit families (CACNA1) of L and N types was investigated by combining phylogenetic analyses (neighbour-joining and maximum likelihood) with chromosomal data. Neighbouring gene families were analysed to see if the chromosomal regions duplicated through whole genome doublings in vertebrates. LÄS MER

  7. 5. Effects of Ethinylestradiol, EE2, exposure on Poecilia reticulta male specific genes, DMRT1 and CYP11b 

    Kandidat-uppsats, Institutionen för livsvetenskaper

    Författare :Natalia Isabel Moran Lopez; [2011]
    Nyckelord :;

    Sammanfattning : Endocrine disrupting chemicals (EDCs) found in every day product, can either be natural or man-made and usually exists in a concerning concentration in our aquatic environment which in turn could affect teleost reproduction. EDCs exposure in fishes may result in changes in their reproductive physiology and morphology resulting in for example induction in gonopodia in female fish when exposed to androgens and in males exposed to female estrogen a reduced sperm count and skewed sex ration. LÄS MER