Results 61 to 70 of about 1,531 (216)

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

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

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

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

The Effect of Low Temperature on the Early Life Stages of the Walleye Pollock, Gadus chalcogrammus—A Laboratory Study

open access: yesJournal of Marine Science and Engineering, 2021
The walleye pollock Gadus chalcogrammus is an important commercial species in Japan whose larvae and eggs may be negatively affected by the cold water mass from the coastal Oyashio current that is present in the spawning ground of the Japanese Pacific ...
Hae-Kyun Yoo   +5 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

Relationship between food consumption and growth of adult walleye pollock theragra chalcogramma in captivity [PDF]

open access: yes, 1984
Food consumption rate and growth rate of the adult walleye pollock were measured at different temperatures (2-7, 4-10 and 9-15°C), body sizes (33-35, 35-39 and 39-45cm) and foods (juvenile walleye pollock, squid and sandlance). 1.
桜井, 泰憲, 吉田, 英雄
core   +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

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

Trait‐Based Biomonitoring Using eDNA Metabarcoding to Assess Anthropogenic Disturbances on Freshwater Fish Communities

open access: yesMolecular Ecology Resources, Volume 26, Issue 3, April 2026.
ABSTRACT Various anthropogenic disturbances affect the succession of aquatic habitats along dendritic river networks. Bioindicator taxa, such as fish, can be used to assess the effects of these disturbances on habitat quality. Environmental DNA (eDNA) metabarcoding offers a novel approach to complement traditional sampling and analysis of bioindicator ...
Olivier Morissette   +4 more
wiley   +1 more source

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