Browsing Publikasjoner fra CRIStin by Author "Agnalt, Ann-Lisbeth"
Now showing items 1-20 of 22
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A first fecundity study of the female snow crab Chionoecetes opilio Fabricius, 1788 (Decapoda: Brachyura: Oregoniidae) of the newly established population in the Barents Sea
Danielsen, Hanna Ellerine Helle; Hjelset, Ann Merete; Bluhm, Bodil; Hvingel, Carsten; Agnalt, Ann-Lisbeth (Journal article; Peer reviewed, 2019)The snow crab Chionoecetes opilioFabricius, 1788 is a newly established species in the Barents Sea. Since the first individuals were recorded in 1996, the population has increased and a fishery was initiated in 2012. Mature ... -
Alien marine species in Norway - Mapping, monitoring and assessment of vectors for introductions
Husa, Vivian; Agnalt, Ann-Lisbeth; Berntsen, Johan Henrik Hårdensson; Falkenhaug, Tone; Fossøy, Frode; Forsgren, Elisabet; Grefsrud, Ellen Sofie; Hjelset, Ann Merete; Hanssen, Frank Ole; Husby, Even; Jelmert, Anders; Mortensen, Stein; Olsen, Siri Aaserud; Sandvik, Hanno (Rapport fra havforskningen;2022 - 8, Research report, 2022-04-28)Norway has the second longest coastline in the world, and it is challenging to monitor non-indigenous marine species (NIMS) along the entire shore including the Norwegian areas in the Barents Sea and along Svalbard. There ... -
An enriched environment promotes shelter-seeking behaviour and survival of hatchery-produced juvenile European lobster (Homarus gammarus)
Aspaas, Stian; Grefsrud, Ellen Sofie; Fernø, Anders; Jensen, Knut Helge; Trengereid, Henrik; Agnalt, Ann-Lisbeth (Journal article, 2016) -
Detection of growth zones in the eyestalk of the Antarctic krill Euphausia superba (Dana, 1852) (Euphausiacea)
Krafft, Bjørn Arne; Kvalsund, Merete; Søvik, Guldborg; Farestveit, Eva; Agnalt, Ann-Lisbeth (CCAMLR;WG-EMM-16/P02, Conference object, 2016) -
Døde og strandete krepsdyr - Nitti tilfeller rapportert til Havforskningsinstituttet i perioden 2014-2020
Søvik, Guldborg; Dalpadado, Padmini; Falkenhaug, Tone; Sævik, Pål Næverlid; Jenssen, Maria; Larsen, Marita; Hannisdal, Rita; Rønning, Jon; Olsen, Siri Aaserud; Samuelsen, Ole Bent; Agnalt, Ann-Lisbeth; Thangstad, Trude Hauge; Danielsen, Hanna Ellerine Helle; Grøsvik, Bjørn Einar; Hatland, Siren; Bruvik, Aina; Tjensvoll, Tore; Couillard, Felicia Dawn; Korneliussen, Patrick-Andre (Rapport fra havforskningen;2021 - 3, Research report, 2021)Havforskningsinstituttet begynte med en systematisk registrering av innrapporterte funn av strandet krill i 2014. Antall tilfeller var få fra 2014 til 2017, men økte kraftig i 2018 og har siden holdt seg på dette nivået. ... -
Effect of sea lice chemotherapeutant hydrogen peroxide on the photosynthetic characteristics and bleaching of the coralline alga Lithothamnion soriferum
Legrand, Erwann; Parsons, Aoife Elizabeth; Escobar, Rosa; Freytet, Florian; Agnalt, Ann-Lisbeth; Samuelsen, Ole Bent; Husa, Vivian (Peer reviewed; Journal article, 2022)The proliferation of sea lice (Lepeophtheirus salmonis) represents a major challenge for the salmonid aquaculture industry in Norway. Hydrogen peroxide (H2O2) is a chemotherapeutant frequently used on Norwegian farms, ... -
Havbeite med hummer: Artsrapport
Borthen, Jørgen; Agnalt, Ann-Lisbeth; Nøstvold, Einar; Sørensen, Johan (PUSH;, Research report, 1998)Program for Utvikling og Stimulering av Havbeite (PUSH) -
The impact of anti-sea lice pesticides, azamethiphos and deltamethrin, on European lobster (Homarus gammarus) larvae in the Norwegian marine environment
Parsons, Aoife Elizabeth; Escobar, Rosa; Sævik, Pål Næverlid; Samuelsen, Ole Bent; Agnalt, Ann-Lisbeth (Peer reviewed; Journal article, 2020)Anti-sea lice pesticides, used in the salmonid aquaculture industry, are a growing environmental concern due to their potential to adversely affect non-target crustaceans. Azamethiphos and deltamethrin are two bath treatment ... -
Kartlegging av fremmede marine arter i Hordaland
Husa, Vivian; Heggøy, Erling; Sjøtun, Kjersti; Agnalt, Ann-Lisbeth; Johansen, Per-Otto; Glenner, Henrik; Hatlen, Kristin (DN-utredning;2-2012, Research report, 2012-03)The method Rapid Coastal Survey was applied in a pilot project in the county of Hordaland in autumn 2010. The abundance of 21 introduced target species was investigated in 32 marinas in the area. No new species to ... -
Kartlegging av fremmede marine arter i Rogaland
Husa, Vivian; Heggøy, Erling; Agnalt, Ann-Lisbeth; Svensen, Rudolf; Rokkan-Iversen, Kriss; Alvestad, Tom (DN-utredning;3-2012, Research report, 2012-03)The method Rapid Coastal Survey was applied in 36 marinas in the county of Rogaland during five days in august 2010. 27 introduced species were targeted in this investigation. No new species to Norway was found, but ... -
Metodikk for kartlegging og overvåkning av fremmede marine arter i Norge - Forslag til nasjonalt program
Husa, Vivian; Agnalt, Ann-Lisbeth; Falkenhaug, Tone; Forsgren, Elisabet; Fossøy, Frode; Grefsrud, Ellen Sofie; Hanssen, Frank Ole; Jelmert, Anders; Mortensen, Stein (Rapport fra havforskningen;2022 - 10, Research report, 2022-04-28)Norge har i dag overvåkning av enkelte fremmede marine arter og en sporadisk generell kartlegging av forekomsten av slike arter langs deler av kysten. Det er derfor behov for en systematisk plan for kartlegging og overvåkning ... -
Modelled dispersal of snow crab (Chionoecetes opilio) larvae and potential settlement areas in the western Barents Sea
Huserbråten, Mats Brockstedt Olsen; Hjelset, Ann Merete; Danielsen, Hanna Ellerine Helle; Hvingel, Carsten; Agnalt, Ann-Lisbeth (Peer reviewed; Journal article, 2023)Since the mid-1990s, a snow crab (Chionoecetes opilio) population has established in the eastern Barents Sea. Spawning females and newly hatched larvae are now also found in the central Barents Sea, warranting speculations ... -
Modelling chemical releases from fish farms: impact zones, dissolution time, and exposure probability
Sævik, Pål Næverlid; Agnalt, Ann-Lisbeth; Samuelsen, Ole Bent; Myksvoll, Mari Skuggedal (Peer reviewed; Journal article, 2021)Tarpaulin bath treatments are used in open net-pen finfish aquaculture to combat parasitic infections, in particular sea lice. After treatment, the toxic wastewater is released directly into the ocean, potentially harming ... -
Monitoring marine alien species in Norway - A pilot study for implementing a national program
Husa, Vivian; Fossøy, Frode; Davey, Marie; Agnalt, Ann-Lisbeth; Brandsegg, Hege; Bruntveit, Leif; Eilertsen, Mette; Falkenhaug, Tone; Forsgren, Elisabet; Grefsrud, Ellen Sofie; Haugland, Barbro Taraldset; Olsen, Siri Aaserud; Olssøn, Ragni; Svensen, Rudolf; Svensen, Øyvind (Rapport fra havforskningen;2024 - 1, Research report, 2024)In this pilot study we tested the efficiency of different methods to detect alien marine species in three different ports in Rogaland County. The methods used followed by far the recommendations in the HELCOM protocol, ... -
Mortality and reduced photosynthetic performance in sugar kelp Saccharina latissima caused by the salmon-lice therapeutant hydrogen peroxide
Haugland, Barbro Taraldset; Rastrick, Samuel; Agnalt, Ann-Lisbeth; Husa, Vivian; Kutti, Tina; Samuelsen, Ole Bent (Journal article; Peer reviewed, 2019)Sugar kelp Saccharina latissima is one of the dominating kelp species on sheltered sublittoral sites along the Norwegian coastline, providing important habitats and ecosystem services. In finfish aquaculture in Norway, ... -
Mortality in the rockpool shrimp Palaemon elegans following long-term exposure to low doses of the anti-parasitic drug Teflubenzuron
Samuelsen, Ole Bent; Parsons, Aoife; Agnalt, Ann-Lisbeth; Tjensvoll, Tore; Lunestad, Bjørn Tore; Hannisdal, Rita (Peer reviewed; Journal article, 2020)Anti-parasitic drugs used to control sea lice infestations in the salmonid aquaculture industry are a growing environmental concern due to their potential impacts on non-target crustacean species. This study examined the ... -
Recorded captures of American lobster (Homarus Americanus) in Swedish waters and an observation of predation on the European lobster (Homarus Gammarus)
Øresland, Vidar; Ulmestrand, Mats; Agnalt, Ann-Lisbeth; Oxby, Gert (Peer reviewed; Journal article, 2017) -
Risikorapport norsk fiskeoppdrett 2024 - Produksjonsdødelighet hos oppdrettsfisk og miljøeffekter av norsk fiskeoppdrett
Agnalt, Ann-Lisbeth; Diserud, Ola Håvard; Dunlop, Katherine Mary; Escobar, Rosa; Fiske, Peder; Folkedal, Ole; Glover, Kevin Alan; Halvorsen, Kim Aleksander Tallaksen; Hannisdal, Rita; Hindar, Kjetil; Jansson, Eeva; Johnsen, Ingrid Askeland; Karlsson, Sten; Nedreaas, Kjell Harald; Nilsson, Jonatan; Parsons, Aoife Elizabeth; Sandvik, Anne Dagrun; Serra Llinares, Rosa Maria; Skaala, Øystein; Skern-Mauritzen, Rasmus; Skiftesvik, Anne Berit; Stöger, Elisabeth; Utne, Kjell Rong; Wennevik, Vidar (Rapport fra havforskningen;2024 - 4, Research report, 2024) -
Short-term exposure to hydrogen peroxide induces mortality and alters exploratory behaviour of European lobster (Homarus gammarus)
Escobar, Rosa; Parsons, Aoife Elizabeth; Samuelsen, Ole Bent; Agnalt, Ann-Lisbeth (Peer reviewed; Journal article, 2020)Bath treatment chemotherapeutants, used to control sea lice infestations in the salmonid aquaculture industry, are released directly into the marine environment around fish farms and pose a serious risk to non-target ... -
Snow crab (Chionoecetes opilio), a new food item for North-east Arctic cod (Gadus morhua) in the Barents Sea
Holt, Rebecca Emma; Hvingel, Carsten; Agnalt, Ann-Lisbeth; Dolgov, Andrey V.; Hjelset, Ann Merete; Bogstad, Bjarte (Peer reviewed; Journal article, 2021)The snow crab (Chionoecetes opilio) is a newly established species in the Barents Sea, increasing in both distribution and abundance in recent years. We explore the potential importance of North-east Arctic cod (Gadus ...