Results 161 to 170 of about 2,117 (203)

Ontogenetic shifts in diet and trophic position of walleye pollock, Theragra chalcogramma, in the western East Sea (Japan Sea) revealed by stable isotope and stomach content analyses

Fisheries Research, 2018
We determined the dietary composition and trophic position (TP) of walleye pollock in the western East Sea (Japan Sea), based on the δ13C and δ15N values of this species, sympatric dominant fish and invertebrates, and their putative food sources in ...
H. Park, Tae Hee Park, Chung-Il Lee, C. Kang   +3 more
semanticscholar   +1 more source

Development of the escape response in larval walleye pollock ( Theragra chalcogramma )

Marine Biology, 2001
The development of the escape response of walleye pollock (Theragra chalcogramma) larvae from attacks by macrozooplanktonic and small-fish predators was quantified in laboratory experiments. Behavior was recorded using video cameras with silhouette illumination from infrared-emitting diodes and by visual observation. Laboratory-reared larvae of 1, 3, 8,
Sugisaki H., Bailey K., Brodeur R.
openaire   +1 more source

Effect of pH and heating conditions on the properties of Alaska pollock (Theragra chalcogramma) surimi gel fortified with fish oil.

Journal of texture studies, 2018
To improve the quality and functionality of emulsified surimi gels, the effect of pH and heating conditions on the properties of surimi gel fortified with fish oil was investigated.
Yuanpei Gao, H. Fukushima, S. Deng, Ru Jia, K. Osako, E. Okazaki   +5 more
semanticscholar   +1 more source

Population Structure and Dynamics of Walleye Pollock, Theragra chalcogramma

1999
The population biology of walleye pollock, Theragra chalcogramma, is described including its life history, population dynamics, genetic structure and metapopulation structure. Walleye pollock is an important species in the ecosystems of the subarctic Pacific Ocean, and is one of the world’s largest fisheries.
K.M. Bailey, T.J. Quinn, R Bentzen, W.S. Grant   +3 more
openaire   +1 more source

Optimum temperature for growth of juvenile walleye pollock Theragra chalcogramma

Journal of Experimental Marine Biology and Ecology, 2007
Abstract Food consumption (FC), specific growth rate (SGR), and gross growth efficiency (GGE) were measured for juvenile walleye pollock (initial size 112–153 mm fork length) fed euphausiids at temperatures ( T ) between 2 and 16 °C. FC increased up to 12 °C (7.3% of body weight) and was slightly lower at 16 °C. SGR also increased up to 12 °C (2% d − 
K. Kooka, O. Yamamura, A. Nishimura, T. Hamatsu, T. Yanagimoto   +4 more
openaire   +1 more source

Introduction: from the birth to the table of walleye pollock Theragra chalcogramma

Fisheries Science, 2014
Fisheries provide food, feedstuff, and materials which are reliant on ecosystem services provided by marine and freshwater systems. Fish spawn and mature in aquatic systems, from which they are harvested by fishers, distributed and processed in households, restaurants, or processing plants, and either eaten by consumers, used in aquaculture ...
Mitsutaku Makino, Suam Kim, Anatoly Velikanov, Keith Criddle, Tetsuichiro Funamoto, Masahito Hirota, Yasunori Sakurai   +6 more
openaire   +1 more source

Analysis of the genetic structure of northwestern Bering Sea walleye pollock, Theragra chalcogramma

Environmental Biology of Fishes, 2004
The intraspecific structure of major populations of the walleye pollock Theragra chalcogramma from the northwestern part of the Bering Sea was studied. Specimens from Navarin, Olyutor and Shirshov shoals were sampled in the 2001 spawning season. Preliminary cluster analysis (TREECON) of PCR-RAPD data revealed the existence of cluster with low level of ...
Elena A. Shubina, Marina N. Mel'nikova, Aleksandr I. Glubokov, Boris M. Mednikov   +3 more
openaire   +1 more source

Observations on Reprocessing Frozen Alaska Pollock ( Theragra chalcogramma )

Journal of Food Science, 1984
ABSTRACT Pollock, processed and frozen in Alaska, were thawed and mechanically filleted using a modified LaPine filleting machine. A Yanagiya flesh separator was used to prepare minced flesh from the fillet trimmings. In addition to standard hand‐packed fillet blocks, blocks were also prepared from randomly packed chopped fillets and ...
J. K. BABBITT, B. KOURY, H. GRONINGER, J. SPINELLI   +3 more
openaire   +1 more source

[Temperature decolorization of the rhodopsin of bulls and Theragra chalcogramma fish].

Zhurnal evoliutsionnoi biokhimii i fiziologii, 1977
It has been demonstrated that fish rhodopsin is less resistant to thermal treatment and it is more readily bleached as compared to bovine rhodopsin. At 18 degrees C, the stability of both rhodopsins decreased in the following sequence: fragments of the outer segments--digitonin extracts-triton X-100 extracts-cetyltrimethylammonium bromide extracts-At ...
V A, Tiurin, V P, Korchagin, S A, Shukoliukov, Iu V, Fedosov   +3 more
openaire   +1 more source

Effects of size and light on respiration and activity of walleye pollock (Theragra chalcogramma) larvae

Journal of Experimental Marine Biology and Ecology, 2001
The respiration rate and swimming activity of walleye pollock (Theragra chalcogramma) larvae were measured in the laboratory to determine how these were affected by body size (measured as dry weight), and amount of light. Size influenced respiration rates, but not activity.
openaire   +2 more sources