Blar i forfatter "Thieltges, David W."

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    • Parasites as prey in aquatic food webs: implications for predator infection and parasite transmission 

      Thieltges, David W.; Amundsen, Per-Arne; Hechinger, Ryan F.; Johnson, Pieter T.J.; Lafferty, Kevin D.; Mouritsen, Kim N.; Preston, Daniel L.; Reise, Karsten; Zander, C. Dieter; Poulin, Robert (Journal article; Tidsskriftartikkel; Peer reviewed, 2013-04-25)
      While the recent inclusion of parasites into food-web studies has highlighted the role of parasites as consumers, there is accumulating evidence that parasites can also serve as prey for predators. Here we investigated empirical patterns of predation on parasites and their relationships with parasite transmission in eight topological food webs representing marine and freshwater ecosystems. Within ...

    • Taxa-specific activity loss and mortality patterns in freshwater trematode cercariae under subarctic conditions 

      Born-Torrijos, Ana; Van Beest, Gabrielle S.; Vyhlídalová, Tereza; Knudsen, Rune; Kristoffersen, Roar; Amundsen, Per-Arne; Thieltges, David W.; Soldánová, Miroslava (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-11)
      Cercarial activity and survival are crucial traits for the transmission of trematodes. Temperature is particularly important, as faster depletion of limited cercarial energy reserves occurs at high temperatures. Seasonal climate conditions in high latitude regions may be challenging to complete trematode life cycle during the 6-month ice-free period, but temperature effects on the activity and ...