Article
Fisheries
Guro M. Tveit, Neil Anders, Morten S. Bondo, John R. Mathiassen, Mike Breen
Summary: Wild capture can be stressful for fish, and it is important to develop quantifiable and rapidly responsive biological indicators of stress. This study found that Atlantic mackerel exhibit a skin colour change from green to blue when exposed to crowding stress. The magnitude of this colour change was correlated to the severity and duration of crowding, suggesting that skin colour change could be a useful real-time indicator of crowding stress.
JOURNAL OF FISH BIOLOGY
(2022)
Article
Chemistry, Applied
Fany Sardenne, Eleonora Puccinelli, Marie Vagner, Laure Pecquerie, Antoine Bideau, Fabienne Le Grand, Philippe Soudant
Summary: The study found that storage temperature and duration significantly influenced the content of EPA and DHA fatty acids in fish, with faster loss observed at 18-20 degrees Celsius. Additionally, rapid and cool handling post-fishing is recommended to preserve the freshness and food safety of the fatty acids.
Article
Fisheries
Nina Sandlund, Cecilie Skar, Egil Karlsbakk
Summary: Mycobacterium infection in fish is a well-known global problem, but its prevalence and effects on wild fish species are not well understood. A novel Mycobacterium species was detected in tissue samples from Atlantic mackerel, indicating a possible new source of infection. The manifestation of the disease and its connection to climate change were also discussed.
JOURNAL OF FISH DISEASES
(2023)
Article
Food Science & Technology
Hildur Inga Sveinsdottir, Bjork Sandra Sverrisdottir, Magnea G. Karlsdottir, Turid Rustad, Sigurjon Arason, Marria Gudjionsdottir
Summary: The study found anatomical variation in the muscle of Atlantic mackerel affects oxidation susceptibility, with lateral, ventral, and dorsal dark muscle being more prone to lipid oxidation and hydrolysis.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Kotaro Ono, Aril Slotte, Sondre Holleland, Steven Mackinson, Sigurdur Por Jonsson, Jan Arge Jacobsen, Anna Heida Olafsdottir
Summary: The distribution of Northeast Atlantic mackerel is influenced by size-dependent migratory behavior, with larger individuals tending to migrate longer distances. Migration patterns evolve with age and size, with older and larger mackerel covering a wider area over its annual migration cycle.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Kohma Arai, Martin Castonguay, David H. Secor
Summary: The study revealed changes in the composition of the Northwest Atlantic mackerel population within US fisheries region over the past two decades, with a higher level of mixing of the northern contingent despite a decrease in spawning stock biomass, and an increasing contribution from the southern contingent. There was a positive relationship between contingent mixing and US fisheries landings, suggesting that higher mixing levels might lead to greater catches for the US winter mackerel fishery. The status of the northern contingent plays a crucial role in determining the yield of the Northwest Atlantic mackerel, with spatially explicit stock assessment models recommended for conservation.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Euan Jenkinson, Andrew J. Alexander, Philip J. Camp
Summary: Collagen, the most prevalent structural protein in Nature, is found in animal extracellular matrices. The chiral structures of collagen molecules and aggregates cause the rotation of plane-polarized light. The concentrations of chiral molecules and aggregates in the transparent eyelid of Atlantic mackerel can be so high that plane-polarized light is rotated by a significant degree, resulting in intensely colored images when illuminated with white light.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2023)
Article
Biochemistry & Molecular Biology
Rong Lin, Shasha Cheng, Mingqian Tan
Summary: Carbon dots prepared from onion exhibited excellent antibacterial activity and preservation effect, making them a potential bacteriostatic agent for aquatic products.
Article
Food Science & Technology
Rong Lin, Shasha Cheng, Siqi Wang, Mingqian Tan, Beiwei Zhu
Summary: This study explored the changes in moisture migration, protein oxidation, microstructure, and physicochemical qualities of Atlantic mackerel during storage at 4 degrees C and 0 degrees C. The storage process led to protein oxidation, changes in protein secondary structure, and alterations in myofibril structure, all of which ultimately affected the quality of the mackerel. Additionally, parameters such as drip loss, TVB-N, TBARS value, and b* value significantly increased with storage time.
Article
Food Science & Technology
Soheila Abachi, Clement Offret, Ismail Fliss, Andre Marette, Laurent Bazinet, Lucie Beaulieu
Summary: Fish-extracted biopeptides have been proven to modulate inflammation. This study aimed to fractionate and identify peptide fractions from Atlantic mackerel with immunomodulatory activity. The results showed that hydrophobicity and charge of the peptides were important factors for their immunomodulation activity.
FOOD AND BIOPROCESS TECHNOLOGY
(2022)
Article
Environmental Sciences
Danjal Petur Hojgaard, Eydna I. Homrum, Ian Salter
Summary: The prevalence of Kudoa thyrsites, a myxozoan parasite, in Atlantic mackerel in the Faroese waters was investigated in this study. The results showed that K. thyrsites was present in 98% of the examined mackerel samples, and there was a strong agreement between the microscope smear and qPCR techniques. The overall prevalence of K. thyrsites in the collected samples from 2017 and 2018 was 4.1%, with variations at different locations. The logistic regression model indicated that sampling location and month were associated with the odds of infection, while age, weight, and length showed no significant association. The study also found no molecular evidence of K. thyrsites spores in Faroese plankton assemblages, supporting the hypothesis that the alternating invertebrate host and mackerel infection occur in more southern waters.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
T. C. dos Santos Schmidt, A. Slotte, A. H. Olafsdottir, L. Nottestad, T. Jansen, J. A. Jacobsen, S. Bjarnason, S. M. Lusseau, K. Ono, S. Holleland, A. Thorsen, A. B. Sando, O. S. Kjesbu
Summary: The Northeast Atlantic mackerel has extended its spawning activities into the Norwegian Sea feeding area due to increased access to suitable spawning areas, potentially caused by ocean warming since 2002. This expansion is likely driven by energetic constraints, as mackerel prefer to spawn in high prey concentration areas to rebuild body resources. The suboptimal ambient temperature in the far north may also contribute to the observed decrease in spawner proportions.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Article
Chemistry, Medicinal
Soheila Abachi Hokmabadinazhad, Jacinthe Thibodeau, Ismail Fliss, Andre Marette, Laurent Bazinet, Lucie Beaulieu
Summary: High blood pressure is recognized as a major risk factor of cardiometabolic syndrome. Synthetic drugs used to medicate hypertension often have adverse effects, leading to the search for natural alternatives. Our study focused on fractionating and identifying antihypertensive peptides, finding that the hydrophobic fraction was the most potent ACE inhibitor. The separation technique played an important role in the efficiency of isolation. The findings highlight the significance of polarity for the anti-ACE activity of Atlantic mackerel biopeptides.
JOURNAL OF MEDICINAL FOOD
(2022)
Article
Multidisciplinary Sciences
Bridie Jean Marie Allan, Jessica Louise Ray, Maik Tiedemann, Valeriya Komyakova, Frode Vikebo, Katrine Sandnes Skaar, Martina H. Stiasny, Arild Folkvord, Richard D. M. Nash, Erling Kare Stenevik, Olav Sigurd Kjesbu
Summary: Mortality rates in early life-history stages of fishes are high, with Atlantic herring recruitment decreasing in the Norwegian Sea due to increased predation pressure by Atlantic mackerel. Research using particle drift simulations and ddPCR analysis confirms mackerel predation on herring larvae, highlighting the importance of accurately quantifying predation pressure for effective conservation and management strategies.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Thassya C. dos Santos Schmidt, Anders Thorsen, Aril Slotte, Leif Nottestad, Olav S. Kjesbu
Summary: Using advanced laboratory methods, it was unequivocally confirmed that mackerel are true indeterminate spawners with de novo oocyte recruitment during spawning. The fecundity counts should use a lower threshold of around 230 μm for PVO4c oocytes to avoid overestimation of relative fecundity and underestimated spawning stock biomass.
SCIENTIFIC REPORTS
(2021)
Article
Food Science & Technology
Torunn Valo, Anita Nordeng Jakobsen, Jorgen Lerfall
Article
Food Science & Technology
Jorgen Lerfall, Sunniva Hoel
Summary: This study found that injection-salted fillets had higher yields and similar colorimetric and textural properties compared to those dry-salted. The smoking protocol was the main factor affecting the colorimetric and textural properties of the products. Hot-smoked fillets, regardless of the protocol used, exhibited good microbiological stability, indicating the importance of physiochemical properties in recommending a protocol.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2021)
Article
Food Science & Technology
Jelena Stupar, Ingunn Grimsbo Holoymoen, Sunniva Hoel, Jorgen Lerfall, Turid Rustad, Anita Nordeng Jakobsen
Summary: This study investigated the diversity and antimicrobial activity of lactic acid bacteria strains isolated from ready-to-eat seafood, finding significant differences in antimicrobial effects among LAB genera and towards different target bacteria. LAB isolated from sushi showed the highest antimicrobial effect, and overall, there was a higher antimicrobial activity towards Listeria species compared to E. coli.
Article
Fisheries
Guro M. Tveit, Neil Anders, Morten S. Bondo, John R. Mathiassen, Mike Breen
Summary: Wild capture can be stressful for fish, and it is important to develop quantifiable and rapidly responsive biological indicators of stress. This study found that Atlantic mackerel exhibit a skin colour change from green to blue when exposed to crowding stress. The magnitude of this colour change was correlated to the severity and duration of crowding, suggesting that skin colour change could be a useful real-time indicator of crowding stress.
JOURNAL OF FISH BIOLOGY
(2022)
Article
Food Science & Technology
Lene Waldenstrom, Marte Berg Wahlgren, Ase Strand, Jorgen Lerfall, Mari Ovrum Gaarder
Summary: The aim of this study was to explore Norwegian consumers' attitudes towards smoke-flavoring of cold smoked salmon. The digital survey confirmed that only 15% of respondents had a positive orientation towards smoke-flavoring of CSS. Focus group discussions revealed that the negative group considered smoke-flavored CSS to be unnatural, while the neutral group was curious and open to potential benefits.
Article
Environmental Sciences
Olafur Arnar Ingolfsson, Michael Breen, Shale Rosen, Manu Sistiaga, Terje Jorgensen, Dagfinn Lilleng, Jostein Saltskar, Liz Kvalvik, Sigurd Hannaas, Hermann Pettersen
Summary: The study found that the catch quantity in blue whiting pelagic trawl fishery can be effectively controlled through simple modifications to the codend section of the fishing nets. Measures such as escape openings, fish lock designs, and choking units can be implemented to prevent excessive catches and fish escape. Further research is needed to optimize the designs and ensure reliable functioning of the equipment.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Fisheries
Neil Anders, Olafur Arnar Ingolfsson, Terje Jorgensen, Svein Lokkeborg, Odd-Borre Humborstad
Summary: In the Norwegian snow crab fishery, using a pot with a 40 mm mesh increased the catch of large crabs by 35% compared to the commercial pot with 140 mm mesh, but it also retained a large number of small crabs. Adding escape openings to the design reduced the catch of small crabs significantly, but also decreased the catch of large crabs by 30%. Overall, the currently used commercial pot was the most optimized for catch, but further development of a small mesh pot with escape openings is needed.
FISHERIES RESEARCH
(2023)
Article
Multidisciplinary Sciences
Neil Anders, Sigurd Hannaas, Jostein Saltskar, Erik Schuster, Maria Tenningen, Bjorn Totland, Aud Vold, Jan Tore Ovredal, Mike Breen
Summary: The impacts of wild capture fishing on animal welfare are poorly understood. This study focused on the welfare of Atlantic mackerel during purse seine fishing and found that crowding during pumping negatively affects their vitality. Larger catches and longer crowding exposure times have a greater negative impact. Blood lactate levels were negatively correlated with vitality, indicating that high-intensity anaerobic activity affected welfare. Targeting smaller schools could improve catch welfare by reducing crowding exposure times.
SCIENTIFIC REPORTS
(2022)
Article
Fisheries
Neil Anders, Kenneth Arnesen, Anette Hustad, Terje Jorgensen, Svein Lokkeborg, Sten Siikavuopio, Tina Thesslund, Anne Christine Utne-Palm
Summary: Red king crab is a valuable fisheries resource for communities in northern Norway, but catches often contain a large proportion of sub-legal sized crab. In this study, two new pot designs and longer soak times were tested to reduce undersized crab catches. The results showed that increasing the soak time of the currently used commercial design significantly reduced undersized crab catches.
FISHERIES RESEARCH
(2023)
Article
Biology
Michele Luca Geraci, Giacomo Sardo, Fabio Falsone, Danilo Scannella, Michael Breen, Fabio Fiorentino, Antonello Sala, Sergio Vitale
Summary: The study presents a method for estimating the escape survival of red mullet from demersal trawling in the Central Mediterranean Sea. The fish escaping through the trawl codend had significantly increased injuries and reduced survival compared to control fish. During 7 days of captive monitoring, mortality was highest in the first 24 hours and ceased for both groups within 48 hours.
Article
Food Science & Technology
Bjorn Tore Rotabakk, Elena Marie Rognstad, Anita Nordeng Jakobsen, Jorgen Lerfall
Summary: Soluble gas stabilization (SGS) technology is a novel method to enhance the efficiency of modified atmosphere (MA) packaging. Adding CO2 in an existing processing step, such as the cooling of products, can overcome the time-consuming and difficult nature of SGS. The study demonstrated that hot fish cakes had significantly lower dissolved CO2 after 0.5 hours compared to cold cakes, but there were no significant differences between hot and cold cakes after 1.0 and 2.0 hours. Furthermore, all SGS samples had higher CO2 content compared to modified atmosphere packaging (MAP).
Article
Biodiversity Conservation
Neil Anders, Bjorn Roth, Mike Breen
Summary: The study investigates the physiological response, recovery, and survival of wild caught mackerel exposed to simulated crowding stress in sea cage trials. Results indicate that crowding density and duration impact the physiological response, recovery time, and mortality rates of mackerel, mainly characterized by cortisol elevation, energy mobilization, and skin injury. These findings contribute to the development of welfare-conscious fishing practices aiming to reduce post-slipping mortality.
CONSERVATION PHYSIOLOGY
(2021)