Search for dissertations about: "fishes"

Showing result 1 - 5 of 61 swedish dissertations containing the word fishes.

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

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

   Abstract : 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. READ MORE

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

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

   Abstract : .... READ MORE

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

   Author : Gisela Holm; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fishes; Sticklebacks; Spiggar;

   Abstract : .... READ MORE

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

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

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

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

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

   Abstract : .... READ MORE