Blar i forfatter "Mommens, Maren"

Viser treff 1-5 av 5

    • “Influence of short-to-continuous and continuous photoperiods combined with elevated temperatures on sexual maturation in lumpfish (Cyclopterus lumpus, L. 1758)” 

      Mlingi, Frank Thomas; Puvanendran, Velmurugu; Burgerhout, Erik; Mommens, Maren; Hansen, Øyvind J; Míguez, María Fernández; Presa, Pablo; Tveiten, Helge; Tomkiewicz, Jonna; Kjørsvik, Elin (Journal article; Tidsskriftartikkel; Peer reviewed, 2025-12-02)
      We tested the photothermal effects on sexual maturation in the broodstock of lumpfish (Cyclopterus lumpus) using short-to-continuous (LDL) and continuous (LL) photoperiods for 24 weeks, with temperature elevation during final maturation in females. The lumpfish sexual maturation was phased differently between the two photoperiods, while temperature elevation enhanced the photoperiod changes. Female ...

    • Production of sterile Atlantic salmon by germ cell ablation with antisense oligonucleotides 

      Tveiten, Helge; Andersen, Øivind; Swain, Jaya Kumari; Johnsen, Hanne; Mommens, Maren; Slanchev, Krasimir (Journal article; Tidsskriftartikkel, 2023)
      Cultivation of sterile-only fish in aquaculture offers multiple benefits of environmental, economical, and social value. A reliable method for efficient sterilization without affecting fish welfare and performance traits would have significant impact on fish production practices. Here, we demonstrate sterilization of Atlantic salmon embryos by targeting the dead end gene with antisense oligonucleotides. ...

    • Reproductive biology of lumpfish (Cyclopterus lumpus): a key to successful selective breeding 

      Puvanendran, Velmurugu; Burgerhout, Erik; Hansen, Øyvind J; Tveiten, Helge; Kjørsvik, Elin; Mlingi, Frank Thomas; Tomkiewic, Jonna; Mommens, Maren; Hageskal, Rikard; Iversen, Nina (Research report; Forskningsrapport, 2022)
      A detailed description of lumpfish reproductive biology has been described in terms of gonadal development using histological analysis and physiology using sex steroid development. This knowledge of basic reproductive biology of lumpfish has adopted by our industry partners in their breeding activities in their facilities. Our results demonstrated that spawning of lumpfish can be shifted using ...

    • Reproductive performance of lumpfish (Cyclopterus lumpus, L. 1758) females: Effects of integrated photoperiod and temperature manipulations on sexual maturation and spawning 

      Mlingi, Frank Thomas; Burgerhout, Erik; Mommens, Maren; Tveiten, Helge; Tomkiewicz, Jonna; Kjørsvik, Elin; Puvanendran, Velmurugu (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-15)
      A successful control of sexual maturation is crucial for year-round production of lumpfish juveniles destined as cleaner fish in Atlantic salmon aquaculture. This study investigated the combined effects of photoperiod and temperature manipulations on sexual maturation and spawning in lumpfish females. Lumpfish juveniles were exposed to simulated natural and nine-month compressed annual photoperiods, ...

    • Ultrasonic imaging as a means of monitoring gonadal development in lumpfish (Cyclopterus lumpus) 

      Mlingi, Frank Thomas; Puvanendran, Velmurugu; Burgerhout, Erik; Tveiten, Helge; Tomkiewicz, Jonna; Kjørsvik, Elin; Mommens, Maren (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-21)
      The commercial farming of juvenile lumpfish requires monitoring of gonadal development to achieve synchronized production. Conventional methods such as gonadosomatic index (GSI), sex hormone analyses, gonadal histology, endoscopy, and gene expression analyses are costly, invasive, and often involve sacrificing the fish. We assessed the efficiency of ultrasound as a non-invasive method for monitoring ...