Show simple item record

dc.contributor.advisorBjørn-Steinar, Sæther
dc.contributor.advisorBirthe, Vang
dc.contributor.advisorFederico, Lian
dc.contributor.advisorAnette, Hustad
dc.contributor.advisorSten, Siikavuopio
dc.contributor.authorConradi-Larsen, Tora
dc.description.abstractThis thesis explores the potential of using farmed lumpfish (Cyclopterus lumpus), discarded from Atlantic salmon (Salmo salar L.) aquaculture industry, as a sustainable feed for juvenile red king crabs (Paralithodes camtschaticus). The red king crab has successfully established a self-sustaining population in the Barents Sea. With the red king crab being a large generalist predator, its impact on native bottom communities is a concern. Additionally, the red king crab fishery is a valuable resource, while the lumpfish is an important natural alternative for treating sea lice (Lepeophtheirus salmonis) in salmon aquaculture. The lumpfish stops eating lice when reaching sexual maturity, the fish is then discarded. The study involved feeding four different diets to juvenile red king crabs over 12 weeks, consisting of dry feed, dry feed coated with lumpfish hydrolysate, a combination of dry feed and fresh frozen lumpfish and fresh frozen lumpfish. The crabs receiving mixed diets was seen to have the highest feed intake. The results suggest that lumpfish can be used as feed, providing a basis for better utilization of the resource while reducing pressure on the ecosystem by removing juvenile king crabs from the sea. This approach would enable the harvesting of one resource, the utilization of a "by-product", and a reduction in negative impacts on the ecosystem. Ultimately, this research promotes sustainability and responsible resource management.en_US
dc.publisherUiT Norges arktiske universiteten_US
dc.publisherUiT The Arctic University of Norwayen_US
dc.rights.holderCopyright 2023 The Author(s)
dc.rightsAttribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497en_US
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497en_US
dc.titleFrom Trash to Treasure: The use of Lumpfish (Cyclopterus lumpus) as feed for Red King Crab (Paralithodes camtschaticus)en_US
dc.typeMaster thesisen_US

File(s) in this item


This item appears in the following collection(s)

Show simple item record

Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)