Sökning: "fishes"

Visar resultat 1 - 5 av 60 avhandlingar innehållade ordet fishes.

  1. 1. Sperm motility in Gasterosteiform fishes : The role of salinity and ovarian fluid

    Författare :Helena Elofsson; Bertil Borg; Matthew Gage; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Biology; Biologi;

    Sammanfattning : In externally fertilising fishes, various factors in the surrounding environment may influence the viability of the sperm and eggs, thus determining the success of reproduction. In this thesis, the influence of salinity and ovarian fluid on sperm motility has been investigated in three Gasterosteiform fishes. LÄS MER

  2. 2. Aggressive behaviour between territorial cichlid fish and its regulation

    Författare :Anders Fernö; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; behaviour; animal; fishes; Djursociologi; fiskar;

    Sammanfattning : .... LÄS MER

  3. 3. The three-spined stickleback, Gasterosteus aculeatus L., in ecotoxicological test systems

    Författare :Gisela Holm; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Fishes; Sticklebacks; Spiggar;

    Sammanfattning : .... LÄS MER

  4. 4. Evolution of the Neuropeptide Y System in Vertebrates with Focus on Fishes

    Författare :Tomas Larsson; Dan Larhammar; Svante Winberg; Kenneth H. Wolfe; Uppsala universitet; []
    Nyckelord :Molecular biology; neuropeptide Y; GPCR; evolution; gene duplication; vertebrates; ray-finned fishes; Molekylärbiologi;

    Sammanfattning : Gene families in vertebrates often contain more dulicates (paralogs) than in invertebrates. This has been attributed to genome duplications, i.e., tetraploidizations. LÄS MER

  5. 5. Behavioural ecology of the labrid fishes (Teleostei : Labridae) at Tjärnö on the Swedish west coast

    Författare :Nils-Ove Hilldén; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Ekologi; zoologi; Fiskar; Tjärnö;

    Sammanfattning : .... LÄS MER