Results 61 to 70 of about 44,537 (207)

Distribution of Walleye Pollock Theragra chalcogramma off Southwestern Hokkaido in the Japan Sea in Spring [PDF]

open access: yes, 1996
In order to elucidate the distribution pattern of walleye pollock Theragra chalcogramma off southwestern Hokkaido in the Japan Sea, trawling and acoustic surveys, and hydrographic observations were conducted in early April from 1989 to 1993.
高橋, 豊美   +5 more
core   +1 more source

The Potential Sex Determination Genes, Sox9a and Cyp19a, in Walleye Pollock (Gadus Chalcogrammus) Are Influenced by Water Temperature

open access: yesJournal of Marine Science and Engineering, 2020
Our aim was to study the relationship between the sex-determining genes, sox9a and cyp19a, and water temperature in Gadus chalcogrammus. We assessed the sex ratio based on the expression levels of sox9a and cyp19a at different water temperatures (5, 8 ...
So-Sun Kim   +7 more
doaj   +1 more source

Evaluating and Advancing the Use of Shore‐Based Observers for Scientific Sampling and Catch Verification in High‐Volume Fisheries

open access: yesFisheries Management and Ecology, Volume 33, Issue 3, Page 612-629, June 2026.
ABSTRACT Shore‐based observers are increasingly being used in place of at‐sea observers to monitor and sample commercial fisheries catch. However, few evaluations assess whether these programs meet their stated goals or how to optimize them, and industry data are rarely tested for accuracy despite serving as the foundation for catch accounting. Using a
Christian Gredzens   +2 more
wiley   +1 more source

Seabed classification in the Gulf of Alaska from acoustic surveys using deep learning

open access: yesLimnology and Oceanography: Methods, Volume 24, Issue 5, May 2026.
Abstract High‐resolution mapping of seafloor habitats has wide applications for fisheries, conservation efforts, offshore infrastructure planning, mineral extraction, and scientific modeling. This study leverages existing widespread single‐beam acoustic data and machine learning to create habitat maps for the Gulf of Alaska at a spatial resolution of ...
Karuna Agarwal   +2 more
wiley   +1 more source

Spatially explicit walleye pollock spawning stock biomass.

open access: yes, 2016
Estimates of walleye pollock spawning stock biomass (thousands of tons) for the Gulf of Alaska based upon annually varying maturity estimates. The base and unweighted spatial model are calculated for 1983–2013, the weighted spatial model is constrained ...
Benjamin C. Williams (3219786)   +2 more
core   +1 more source

The SPoRC Stock Assessment Package: A Generalized Next‐Generation Platform to Assess Spatial, Age and Sex‐Structured Populations

open access: yesFish and Fisheries, Volume 27, Issue 3, Page 754-770, May 2026.
ABSTRACT Fisheries managers increasingly rely on stock assessment models to provide sustainable management advice, which must balance complex and competing objectives. Although assessment models necessitate simplifying assumptions, there is increasing recognition to improve the integration of realistic biological and fishery dynamics. While ongoing and
Matthew LH. Cheng   +5 more
wiley   +1 more source

Investigation of chemical composition, biological value and safety of walleye pollock Theragra chalcogramma from Peter the Great Bay

open access: yesИзвестия ТИНРО, 2015
Data on chemical composition, biological value and safety are presented for muscle tissue and internal organs of walleye pollock Theragra chalcogramma caught in Peter the Great Bay (Japan Sea). The meat of рollock in any biological state has high protein
Natalia M. Kupina   +2 more
doaj   +1 more source

Capelin Size, Condition, and Abundance Through Multiple Heatwaves in Alaska

open access: yesFisheries Oceanography, Volume 35, Issue 3, Page 413-429, May 2026.
ABSTRACT Capelin (Mallotus spp.) are pelagic forage fishes that can be especially abundant in sub‐arctic marine ecosystems and are important prey for upper trophic‐level consumers. Abundance and distribution of capelin have been linked to ocean temperature, but the magnitude and directionality of thermal sensitivity can vary regionally.
Robert M. Suryan   +7 more
wiley   +1 more source

Report on Intersex and Abnormal Mature Aquacultured Walleye Pollock, Gadus chalcogrammus

open access: yesFishes
Walleye pollock (Gadus chalcogrammus) is a commercially important species widely distributed in cold-water regions. We have been culturing this species artificially since 2015.
Hae-Kyun Yoo   +6 more
doaj   +1 more source

Preventive Management of Cannibalism by Size‐Grading in Juvenile Red‐Spotted Grouper (Epinephelus akaara)

open access: yesAquaculture, Fish and Fisheries, Volume 6, Issue 2, April 2026.
ABSTRACT This study aimed to quantify the cannibal‐prey size relationship using morphometric regression models and to establish an effective size‐grading strategy to prevent cannibalism. A total of 15,000 juveniles at 73 days post‐hatching (DPH) were reared in a circular tank (approximately 12 tons) operated under a flow‐through seawater system at 26.0 
Moon‐Soo Boo, Chi‐Hoon Lee
wiley   +1 more source

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