Article
Environmental Sciences
Odd-Borre Humborstad, Lasse Kroger Eliassen, Sten Ivar Siikavuopio, Svein Lokkeborg, Olafur Arnar Ingolfsson, Ann Merete Hjelset
Summary: The study revealed significant unaccounted mortality of snow crabs in the Barents Sea due to self-baiting, continued catch, and cannibalism, leading to overall energy deficiencies. The findings demonstrate the huge potential impact of lost or abandoned snow crab pots in the Barents Sea fishery on ghostfishing.
MARINE POLLUTION BULLETIN
(2021)
Article
Fisheries
Rebecca E. Holt, Carsten Hvingel, Ann-Lisbeth Agnalt, Andrey Dolgov, Ann Merete Hjelset, Bjarte Bogstad
Summary: The study reveals that the distribution and abundance of snow crab in the Barents Sea have been increasing in recent years, with the potential importance of Northeast Arctic cod predation in structuring the snow crab population expansion. Snow crab is a new prey item for cod and has become the dominant species in cod diet, with cod having the potential to regulate the snow crab population.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Food Science & Technology
Sohyun Mun, Eui-Cheol Shin, Seonghui Kim, Joodong Park, Chungeun Jeong, Chang-Guk Boo, Daeung Yu, Jin-Ha Sim, Cheong-Il Ji, Taek-Jeong Nam, Suengmok Cho
Summary: This study evaluated the similarities between commercial imitation crab sticks (ICSs) and real snow crab leg meat (RC). The results showed that ICSs with real crab leg meat had a higher similarity to RC in terms of sensory evaluation, gel strength, and texture profiles. However, taste compounds and volatile compounds analysis revealed distinct differences between ICSs and RC.
Article
Chemistry, Medicinal
Heather J. Burke, Francesca Kerton
Summary: Green extraction methods were evaluated for the sequential extraction of carotenoid pigments, protein, and chitin from crab processing discards. Three valuable bio-products, including pigmented vegetable oil, pigmented protein powder, and chitin, were obtained. Further research is needed to obtain pigment-free chitin in an environmentally friendly manner.
Article
Multidisciplinary Sciences
Runar Gjerp Solstad, Alexandre Descomps, Sten Ivar Siikavuopio, Rasmus Karstad, Birthe Vang, Ragnhild Dragoy Whitaker
Summary: The snow crab fishery has become a new and profitable industry in Norway in the past decade. However, seasonal variations in meat content and quality of co-products have been identified, with the most profitable fishing time recommended to be in the winter-spring period in the Barents Sea.
SCIENTIFIC REPORTS
(2021)
Article
Fisheries
Bernard Sainte-Marie, Jean-Francois Ouellet, Helene Dionne
Summary: The temperature-size rule was observed in snow crabs, with individuals maturing smaller in warmer conditions and larger in colder conditions. However, the size after moult increases with temperature. The intermoult period decreases exponentially with temperature, and lower instars are more sensitive to temperature changes than higher instars.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Virology
Satoshi Kawato, Shoya Fujishima, Reiko Nozaki, Hidehiro Kondo, Tadashi Isshiki, Ikuo Hirono
Summary: This study reports the causative agent of milky hemolymph disease in snow crab, known as Chionoecetes opilio bacilliform virus (CoBV), and reveals its complete genome sequence, confirming its classification as a member of the Nimaviridae family.
ARCHIVES OF VIROLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Federico Lian, Oyvind Jostensen, Sten Siikavuopio, Grete Lorentzen
Summary: This study investigated the effect of live holding time and temperature on the microbial count in the cooked leg meat of red king crab and snow crab. The results showed that the holding temperature significantly affected the microbial count in red king crab, while the holding conditions had a lower influence on snow crab. Freezing also decreased the microbial count in both crab species.
Article
Environmental Sciences
Jennifer R. Hall, Sarah J. Lehnert, Emmanuel Gonzalez, Jacqueline M. Hanlon, Surendra Kumar, Corey J. Morris, Matthew L. Rise
Summary: A laboratory study found that chronic noise exposure affects the physiology of snow crabs, including their immunity, metabolism, and response to environmental stress. However, the expression of these biomarkers showed inconsistent results in the field, highlighting the need for further research to evaluate their utility.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Fisheries
Jennifer R. Hall, Sarah J. Lehnert, Emmanuel Gonzalez, Surendra Kumar, Jacqueline M. Hanlon, Corey J. Morris, Matthew L. Rise
Summary: This study conducted field research on the eastern slope of the Grand Banks in Newfoundland and Labrador, Canada, investigating the potential impact of seismic exploration on the transcriptome of snow crab hepatopancreas. Differential expression analysis identified several transcripts with significant changes in response to seismic exposure, leading to the discovery of potential molecular biomarkers. Functional annotations of candidate seismic-responsive genes included oxidoreductase activity, apoptotic process, and inflammatory response.
FISHERIES RESEARCH
(2021)
Article
Multidisciplinary Sciences
Kristine Cerbule, Leif Grimsmo, Bent Herrmann, Eduardo Grimaldo
Summary: The use of food grade wild-captured species as bait for other fisheries raises concerns about the sustainability of food production. In the snow crab fishery, large amounts of bait from wild-capture fisheries are used, leading to economic and environmental sustainability issues. Alternative bait sources, such as processed by-products from commercial fisheries, need to be considered.
Article
Environmental Sciences
Kristine Cerbule, Bent Herrmann, Eduardo Grimaldo, Jesse Brinkhof, Manu Sistiaga, Roger B. Larsen, Zita Bak -Jensen
Summary: Marine pollution caused by lost or abandoned fishing gear has a negative impact on the ecosystem, resulting in plastic pollution and ghost fishing. In the snow crab pot fishery, due to harsh weather conditions and the use of plastic materials, lost gear can continue fishing for decades. This study presents a method to measure the efficiency of ghost fishing in comparison to actively fished pots, showing that lost pots can still catch target-sized snow crabs even without bait.
MARINE POLLUTION BULLETIN
(2023)
Article
Fisheries
Darrell R. J. Mullowney, Krista D. Baker
Summary: In some portions of the Newfoundland and Labrador snow crab stock range, a sex-asymmetric downward shift in size-at-terminal molt has occurred in males. Factors such as cold water expanse and large male density play significant roles in promoting this shift in size-at-terminal molt. This shift is associated with the recent increase in fishery exploitation rates and the low density of large male snow crabs.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Meng Meng, Daoyi Gong
Summary: This study investigated the influence of winter North Atlantic sea surface temperature on spring Eurasian wildfire and found two possible pathways. Firstly, the anomalous SST pattern in winter can persist to spring, leading to high air-pressure anomaly over southeastern Siberia and enhancing aridity conditions and wildfire risk. Secondly, the negative snow cover anomalies during winter can result in negatively anomalous soil moisture, providing a favorable environment for wildfire activities.
GEOPHYSICAL RESEARCH LETTERS
(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
Fisheries
Miguel Petrere Jr, Davi Butturi-Gomes
Summary: This short communication aims to raise awareness about the misuse of confidence intervals in Ecology and Fisheries statistical models that ignore the lack of independence.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Peter-John F. Hulson, Benjamin C. Williams
Summary: This study evaluates the impact of considering ageing error and growth variability on the determination of input sample size (ISS) in statistical catch-at-age assessment models. The results show that including these sources of uncertainty decreases the ISS determined through bootstrap methods. This indicates that there is more variability in age composition and conditional age-at-length data than previously accounted for. Including these sources of uncertainty improves the estimation of ISS and subsequently improves the quality of stock assessment models.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Jason M. Cope
Summary: Fishery resource assessment is a complex and challenging task, but with the use of different analysis methods and tools, effective management guidance can be provided even with limited data and resources.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Regina L. Cunha, Joana I. Robalo, Sara M. Francisco, Ines Farias, Rita Castilho, Ivone Figueiredo
Summary: Recent advances in genomics have greatly contributed to the assessment of fish stocks by providing precise identification of genetic boundaries. This study used a genotyping-by-sequencing approach to reveal the existence of an additional genetic cluster of blackspot seabream in the northeast Atlantic, which was not previously identified. Factors such as ocean circulation patterns and local upwelling may play a role in the genetic differentiation observed in this study.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Huihua Lee, Mark N. Maunder, Kevin R. Piner
Summary: Estimating growth is important for fish population assessment. Integrated assessment models and the influence of misfitting size composition data have renewed interest in how growth is modeled. The available data types control how the length-at-age relationship is estimated. Estimating length-at-age is complex due to multiple sources of biological variability and difficulties in obtaining representative samples.
FISHERIES RESEARCH
(2024)
Article
Fisheries
A. Ladino, I. Perez-Arjona, V. Espinosa, M. Chillaron, V. Vidal, L. M. Godinho, G. Moreno, G. Boyra
Summary: This study examines the acoustic properties of skipjack tuna and Atlantic mackerel, both bladderless pelagic fish species, and explains the significant differences observed. The research shows that the differences in material properties of their tissues predict a more than 10 dB greater reduced target strength in skipjack compared to mackerel at certain frequencies.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Nelly Pena-Cutimbo, Cristel Cordero-Maldonado, Clara Ortiz-Alvarez, Joanna Alfaro-Shigueto, Jeffrey C. Mangel
Summary: Bycatch is a global problem for marine megafauna. This study assessed the bycatch interactions of the Peruvian artisanal purse-seine fishery in 2019 and found that all taxa groups were affected by bycatch. Dusky dolphins, guanay cormorants, and eagle rays were the most frequently reported bycatch species.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Jen-Ming Liu, Po-Yuk So
Summary: The set-net fishery is an environmentally friendly fishery posing little risk to the marine ecosystem. This study identified ocean temperature, sea surface factors, and climatic factors as the main factors affecting the installation of set-nets.
FISHERIES RESEARCH
(2024)
Article
Fisheries
Josie L. Palmer, Carina Armstrong, Hasan D. Akbora, Damla Beton, Cigdem Caglar, Brendan J. Godley, Kristian Metcalfe, Meryem Ozkan, Robin T. E. Snape, Annette C. Broderick
Summary: Small-scale fisheries are vital for global food security and cultural heritage, but the lack of information hampers effective management and mitigation of ecological impacts. This study provides the first comprehensive overview of the small-scale fishery fleet in Northern Cyprus. The fleet operates mainly over the continental shelf, using static and demersal gear types, and catches a diverse range of species, some of which are threatened. The findings can be used to improve fisheries management and conservation measures.
FISHERIES RESEARCH
(2024)