Article
Fisheries
Adam Spear, Alexander G. G. Andrews III, Janet Duffy-Anderson, Tayler Jarvis, David Kimmel, Denise McKelvey
Summary: The study analyzed data from different temperature years and found that the vertical distribution of age-0 pollock is related to ocean temperature changes. In colder years, age-0 pollock was found in deeper water columns, while in warmer years, they were surface-oriented. This may affect spatial matching between pollock and prey, and impact the feeding environment and bioenergetic condition of age-0 pollock.
FISHERIES OCEANOGRAPHY
(2023)
Article
Oceanography
Sharon Wildes, Jackie Whittle, Hanhvan Nguyen, Maxwell Marsh, Kirby Karpan, Catherine 'Amelio, Andrew Dimond, Kristin Cieciel, Alex De Robertis, Robert Levine, Wes Larson, Jeff Guyon
Summary: This study used genetic techniques to identify cods in the Pacific Arctic and found evidence of distributional shifts and range expansions of cod species in response to changing climactic conditions, with cod and Arctic Cod moving northward during warmer conditions. The study also detected juvenile Arctic Cod in the Chukchi Sea, where they are not typically found.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Review
Oceanography
Arnaud Gruss, James T. Thorson, Christine C. Stawitz, Jonathan C. P. Reum, Sean K. Rohan, Cheryl L. Barnes
Summary: By applying EOF analysis to examine fish demographic processes in the eastern Bering Sea, the study found a strong correlation between prey-biomass-per-predator-mass and the spatial extent of bottom temperatures (CPE), indicating a bottom-up environmental influence on demographic processes. Anomalous years, such as 1999 and 2010 with a large CPE and high indices for demographic variables, as well as 2016-2019 with a small CPE and low indices, were identified. These findings suggest the potential for using CPE projections to forecast changes in demographic process variables in the future.
PROGRESS IN OCEANOGRAPHY
(2021)
Article
Biochemistry & Molecular Biology
Ju Eun Lee, Sang-Kyu Noh, Mi Jeong Kim
Summary: Collagen hydrolysate was extracted from Alaska pollock skin using enzymatic and ultrasound treatment. The extracted fractions showed high levels of antioxidant activity and the digested collagen exhibited altered structure and morphology. Combining enzymatic treatment with ultrasound proved to be the most effective method for obtaining digested collagen hydrolysate.
Article
Marine & Freshwater Biology
S. L. Ovsyannikova, E. E. Ovsyannikov, Yu. V. Novikov
Summary: Data on the spatial distribution of Walleye Pollock and habitat conditions in the southern Kuril Islands during the spawning season of 2015 and the feeding season of 2016 are provided in this report. The study shows that Walleye Pollock are distributed differently in spring and summer, with changes in water temperature impacting their movements. Different seasons and regions have different feeding habits and habitat preferences for Walleye Pollock.
RUSSIAN JOURNAL OF MARINE BIOLOGY
(2021)
Article
Food Science & Technology
Natsuka Takada, Ryota Hosomi, Kenji Fukunaga
Summary: Processing Alaska pollock protein (APP) into kamaboko protein (KBP) can significantly improve serum total cholesterol levels and glucose tolerance, with KBP exhibiting higher effects than APP.
Article
Fisheries
Duane E. Stevenson, Stan Kotwicki, James T. Thorson, Giancarlo M. Correa, Troy Buckley
Summary: This study examines the influence of environmental conditions, intrinsic properties of populations, and prior distribution on the spatial distributions of marine fish populations. It identifies age-specific factors and population cohort effects as important drivers of spatial distribution.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
Article
Oceanography
Olga A. Maznikova, Pavel O. Emelin, Artem Yu Sheibak, Mikhail A. Nosov, Alexei M. Orlov
Summary: Based on trawl surveys conducted by Russian research vessels, this study presents data on the distribution and behavior of walleye pollock in the western Chukchi Sea. The distribution of walleye pollock is influenced by water temperature, and different size groups are found in different areas and depths. The recent increase in pollock abundance is attributed to various factors including warming temperatures, decreasing ice cover, and increasing abundance in the Bering Sea. Commercial fishing in the western Chukchi Sea is not sustainable due to uncertainties in stock population, harsh climatic conditions, and logistical challenges.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2023)
Article
Marine & Freshwater Biology
A. V. Buslov, E. E. Ovsyannikov
Summary: Based on surveys conducted in the Russian waters of the Chukchi Sea, this study examines the distribution and size/age structure of walleye pollock. The results show two main age groups in the catches, with younger and older individuals dominating the size/age structure. The study also reveals differences in growth rates between walleye pollock migrating from the Bering Sea and those remaining in the Chukchi Sea. The resident pollock show a preference for coastal waters.
RUSSIAN JOURNAL OF MARINE BIOLOGY
(2022)
Article
Engineering, Marine
Joo-Myun Park, Hae-Kun Jung, Chung-Il Lee
Summary: The study analyzed the dietary patterns of walleye pollock off the middle eastern coast of Korea and found significant variations in dietary composition influenced by fish size, water depth, and season, indicating intraspecific dietary segregation. The results suggest a coupling effect of size and depth, with larger individuals tending to be distributed in deeper habitats. Seasonal and interannual variations in water column structures also contribute to diet seasonality observed in the stomach content analysis.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Oceanography
Olga R. Emelianova, Oleg A. Bulatov, Igor V. Grigorov, Alexei M. Orlov, Svetlana Yu Orlova
Summary: The results of genetic analysis on walleye pollock from the Chukchi Sea reveal no significant difference between the populations in the Chukchi Sea and the Bering Sea, but a significant difference with the Sea of Okhotsk. This suggests genetic exchange through mixing of genetic material from different spawning grounds and migrations of adult fish.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2022)
Article
Fisheries
Krista B. Oke, Franz Mueter, Michael A. Litzow
Summary: This study used fisheries-independent data to test the effects of climate on body size of eastern Bering Sea walleye pollock. The results showed that higher temperatures led to increased weight for young age classes but decreased weight for old age classes. This finding has important implications for pollock management and the Bering Sea pollock fishery.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
Article
Environmental Sciences
Yong-Yub Kim, Yu-Kyeong Kang, Seung-Tae Lee, Hae Kun Jung, Chung Il Lee, Sangil Kim, Kwang Young Jeong, Do-Seong Byun, Yang-Ki Cho
Summary: The number of walleye pollock caught in the Korean fishing area dramatically decreased in the late 1980s. The study found that the increase in sea surface temperature in the spawning area and the intensified East Korean Warm Current could be responsible for the decrease in the number of individuals transported to the nursery and the southern area. These oceanic changes might be linked to climate regime shifts in the late 1980s.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Jiexia Zhang, Liyang Zhan, Liqi Chen, Haiyan Jin, Man Wu, Wangwang Ye, Jian Liu
Summary: Rapid warming and loss of sea ice in the Arctic Ocean could play an important role in the dissolution and emission of greenhouse gas nitrous oxide (N2O). The northeastern Bering Sea shelf (NEBS) is found to be an important potential source of atmospheric N2O.
Article
Chemistry, Applied
Chaoping Chen, Jie-Ting Geng, Nonthacha Thanathornvarakul, Sumate Keratimanoch, Nail Ucyol, Emiko Okazaki, Kazufumi Osako
Summary: This study investigated the effects of processing sequence and frozen storage period on seasoned Alaska pollack roe product quality, finding that products made by the Seasoning-Frozen storage process showed better quality with higher mechanical property values, better surface color, and more stable protein composition.
Article
Oceanography
Jason A. Law, Robert H. Weisberg, Yonggang Liu, Dennis A. Mayer, Jeffrey C. Donovan
Summary: Time series data from a moored array of sensors are used to describe the long-term mean circulation and seasonal variations on the West Florida Continental Shelf. The observations reveal a coherent shelf-wide circulation pattern with alongshore and down-coast flow, and a coastal jet separating an upwelling region from a downwelling region influenced by the deeper ocean.
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
(2024)