• Monitoring a Norwegian freshwater crayfish tragedy: eDNA snapshots of invasion, infection and extinction 

      Strand, David A; Johnsen, Stein Ivar; Rusch, Johannes C; Agersnap, Sune; Larsen, William Brenner; Knudsen, Steen Wilhelm; Møller, Peter Rask; Vrålstad, Trude (Peer reviewed; Journal article, 2019)
      1. The European noble crayfish Astacus astacus is threatened by crayfish plague caused by the oomycete Aphanomyces astaci, which is spread by the invasive North American crayfish (e.g. signal crayfish Pacifastacus leniusculus). ...
    • Monitoring of noble, signal and narrow-clawed crayfish using environmental DNA from freshwater samples 

      Agersnap, Sune; Larsen, William Brenner; Knudsen, Steen Wilhelm; Strand, David; Thomsen, Philip Francis; Hesselsøe, Martin; Mortensen, Peter Bondgaard; Vrålstad, Trude; Møller, Peter Rask (Peer reviewed; Journal article, 2017)
      For several hundred years freshwater crayfish CrustaceaÐDecapodaÐAstacidea) have played an important ecological, cultural and culinary role in Scandinavia. However, many native populations of noble crayfish Astacus astacus ...
    • The surveillance programme for Aphanomyces astaci in Norway 2017 

      Vrålstad, Trude; Rusch, Johannes; Johnsen, Stein Ivar; Tarpai, Attila; Strand, David (Research report, 2018)
      In this surveillance program, we used environmental DNA (eDNA) monitoring of the water as an alternative method to the traditional cage experiments with live noble crayfish. Here, DNA from spores of Aphanomyces astaci are ...
    • The surveillance programme for Aphanomyces astaci in Norway 2018 

      Strand, David; Rusch, Johannes; Johnsen, Stein Ivar; Tarpai, Attila; Vrålstad, Trude (Research report, 2019)
      In this surveillance program, environmental DNA (eDNA) monitoring of the water was used as an alternative method to the traditional cage experiments with live noble crayfish. Here, DNA from spores of Aphanomyces astaci are ...