Results 21 to 30 of about 1,531 (216)

Potential Impact of Late 1980s Regime Shift on the Collapse of Walleye Pollock Catch in the Western East/Japan Sea

Frontiers in Marine Science, 2022
Walleye pollock (Gadus chalcogramma) caught in the Korean fishing area dramatically decreased in the late 1980s. To investigate the potential impact of the late 1980s climate regime shift on the collapse of the pollock catch, we developed a three ...
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   +8 more
doaj   +1 more source

A mitogenomic approach to the taxonomy of pollocks: Theragra chalcogramma and T. finnmarchica represent one single species

BMC Evolutionary Biology, 2007
Background The walleye pollock (Theragra chalcogramma) and Norwegian pollock (T. finnmarchica) are confined to the North Pacific and North Atlantic Oceans, respectively, and considered as distinct species within the family Gadidae. We have determined the
Coucheron Dag H, Fevolden Svein-Erik, Christiansen Jørgen, Breines Ragna, Ursvik Anita, Johansen Steinar D   +5 more
doaj   +1 more source

Swimbladders under pressure: Anatomical and acoustic responses by walleye pollock [PDF]

The Journal of the Acoustical Society of America, 2006
Pressure influences echo intensities of swimbladdered fish through changes in swimbladder volumes and surface areas. Volume reduction is expected to correspond to Boyle’s law (volume ∝pressure−1) but the resulting deformation in swimbladder surface area will largely determine target strength at geometric scattering frequencies.
John K. Horne, Kouichi Sawada, Koki Abe, Richard B. Kreisberg, David H. Barbee, Kazuhiro Sadayasu   +5 more
openaire   +1 more source

Spatial match-mismatch between juvenile fish and prey provides a mechanism for recruitment variability across contrasting climate conditions in the eastern Bering Sea.

PLoS ONE, 2013
Understanding mechanisms behind variability in early life survival of marine fishes through modeling efforts can improve predictive capabilities for recruitment success under changing climate conditions.
Elizabeth Calvert Siddon, Trond Kristiansen, Franz J Mueter, Kirstin K Holsman, Ron A Heintz, Edward V Farley   +5 more
doaj   +1 more source

Oceanographic conditions and analysis of walleye pollock Theragra chalcogramma fishery in the Navarin area in 2017–2021

Известия ТИНРО, 2022
The northwestern Bering Sea, in particular the waters at Cape Navarin, is one of the main areas of the walleye pollock fishery. Environmental variability in the Bering Sea affects on recruitment, abundance, behavior, and seasonal spatial distribution of ...
E. V. Gritsay, M. A. Stepanenko
doaj   +1 more source

Oceanographic conditions within the main area of walleye pollock

Trudy VNIRO, 2022
Purpose: to characterize oceanographic conditions and their variability at various time scales within the walleye pollock area, including all Far Eastern seas of Russia, the Chukchi Sea, and the South Kuril and East Kamchatka regions.Methods: analysis of literary sources and data of expedition studies conducted by the Far Eastern branches of «VNIRO ...
A. S. Krovnin, Yu. I. Zuenko, A. L. Figurkin, G. V. Khen, K.  K. Kivva, Yu. V. Novikov, O. B. Tepnin   +6 more
openaire   +1 more source

The content of trace elements in the muscle tissue of some species of aquatic organisms from the Sea of Okhotsk waters of Northeastern Sakhalin [PDF]

Геосистемы переходных зон, 2023
The content of Fe, As, Cu, Mn, Cr, Ni, Pb and Cd in the muscles of some aquatic organism species from the Sea of Okhotsk waters of Northeastern Sakhalin was estimated: walleye pollack (Gadus chalcogrammus Pallas, 1814), longhead dab (Limanda proboscidea ...
Yury N. Poltev, Tatyana G. Koreneva, Vsevolod E. Maryzhikhin, Irina V. Syrbu   +3 more
doaj   +1 more source

Sensitivity analysis of the multispecies virtual population analysis model parameterized for a system of trophically-linked species from the eastern Bering Sea

Ciencias Marinas, 2004
A sensitivity analysis of a multispecies virtual population analysis (MSVPA) model parameterized for the Bering Sea was carried out using two methods for the analysis.
J Jurado-Molina, P Livington, VF Galluci
doaj   +1 more source

Shifting stage‐specific constraints on productivity shape recovery potential for Yukon River Chinook salmon [PDF]

Ecol Appl
Abstract Identifying key life history periods in which population productivity is constrained represents a persistent challenge in conservation and natural resource management. For species with complex life cycles, such as Pacific salmon (Oncorhynchus spp.), population dynamics may be shaped by interactions between natural and anthropogenic impacts ...
DeFilippo L, Howard K, Cunningham C, Suryan R, Barry P, Murphy J, Larson W.   +6 more
europepmc   +2 more sources

Feeding of walleye pollock and its feeding base in the Chukchi Sea in summer-autumn period

Известия ТИНРО, 2023
Data on feeding of walleye pollock <i>Gadus chalcogrammus</i> (3–70 cm long) in the Chukchi Sea in summer-autumn of 2017–2020 are presented. The food base includes zooplankton, benthic invertebrates and fish. The juveniles in the northwestern
N. A. Kuznetsova, M. A. Shebanova
doaj   +1 more source