Sökning: "stickleback"

Visar resultat 1 - 5 av 14 uppsatser innehållade ordet stickleback.

  1. 1. Diet hos lax (Salmo salar) och öring (Salmo trutta) i Vänern: Kompletterande perspektiv i en ekosystembaserad fiskförvaltning

    Master-uppsats, Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)

    Författare :Nils Nyquist; [2022]
    Nyckelord :;

    Sammanfattning : Kunskap om fiskars diet är viktigt för att kunna bedriva en ekosystembaserad fiskförvaltning. I Sveriges största sjö Vänern lever glacialrelikta stammar av lax (Salmo salar) och öring (Salmo trutta) som enligt Natura 2000 har särskilt bevarandevärde och därför är föremål för riktade förvaltningsåtgärder. LÄS MER

  3. 2. The effects of eutrophication and browning on prey availability and performance of the three-spined stickleback (Gasterosteus aculeatus)

    Master-uppsats, SLU/Dept. Of Aquatic Resources

    Författare :Olivia Bell; [2021]
    Nyckelord :Baltic Sea; benthic habitats; body growth; climate change; coastal areas; diet; fish; stickleback; zooplankton;

    Sammanfattning : Shallow coastal areas often have high productivity and diversity, in part due to the high availability of light and nutrients. At the same time, they are exposed to multiple environmental pressures, such as browning and eutrophication. LÄS MER

  4. 3. Nuptial coloration is unaffected by the immune response fibrosis in threespine stickleback

    Kandidat-uppsats, Lunds universitet/Examensarbeten i biologi

    Författare :Siri Stigeborn; [2021]
    Nyckelord :Biology and Life Sciences;

    Sammanfattning : To understand why immune traits affect the fitness of its host is an important part of understanding why and how immune responses evolve. In threespine stickleback (Gasterosteus aculeatus), fibrosis is an immune response evolved to combat infection of the tapeworm parasite Schistocephalus solidus. LÄS MER

  5. 4. Influence of reed (Phragmites australis) belts in the Baltic Sea archipelago on pike (Esox lucius) and other coastal fish species

    Master-uppsats, SLU/Dept. Of Aquatic Resources

    Författare :Niklas Niemi; [2020]
    Nyckelord :Reed; Phragmites; Pike; Baltic Sea; spatial distribution; habitat utilization; reed expansion; reed management;

    Sammanfattning : Eutrophication, near shore building and human disturbances by dredging and shore alteration have led to increased expansion of the common reed (Phragmites australis) in the archipelago of the Baltic Sea. Reed has an important ecological function such as nursery habitat for many fish species. LÄS MER

  7. 5. Behavioral Alteration of Ninespine Stickleback (Pungitius pungitius) and Threespined Stickleback (Gasterosteus aculeatus) when Exposed to the Anxiolytic Drug Oxazepam.

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Jenni Burman; [2020]
    Nyckelord :Behavioral alteration; oxazepam; Pungitus pungitus; Gasterosteus aculeatus;

    Sammanfattning : One of the environmental hazards the aquatic ecosystem is faced with today is pollution by pharmaceuticals that enter the aquatic system through wastewater from hospitals, manufacturing processes and improper disposal by the public. Benzodiazepines are a class of anxiolytic pharmaceuticals that have been shown to have behavioral modifying effects on exposed biota. LÄS MER