Results 221 to 230 of about 5,753 (262)

Corroborating the ages of walleye pollock (Theragra chalcogramma)

Marine and Freshwater Research, 2006
Fish ageing researchers have long recognised the importance of validating age-reading methodologies. The strongest age validations require the acquisition of ageing structures from fish of known-ages, or specimens whose ages are appropriate for bomb carbon validation.
Daniel K. Kimura, Craig R. Kastelle, Betty J. Goetz, Christopher M. Gburski, Alexander V. Buslov   +4 more
openaire   +1 more source

Walleye pollock recruitment in Shelikof Strait: applied fisheries oceanography

Fisheries Oceanography, 1996
ABSTRACTFisheries‐Oceanography Coordinated Investigations (FOCI) is a National Oceanic and Atmospheric Administration (NOAA) research programme seeking to understand recruitment processes of commercially exploited Alaskan fishes. The FOCI is mainly comprised of scientists at the Pacific Marine Environmental Laboratory and the Alaska Fisheries Science ...
ARTHUR W. KENDALL, JAMES D. SCHUMACHER, SUAM KIM   +2 more
openaire   +1 more source

Season variation in nutrient composition of Alaskan walleye pollock

Canadian Journal of Zoology, 2004
A popular hypothesis for the noted steady decline in the population of Steller sea lions, Eumetopias jubatus (Schreber, 1776), in the regions from Prince William Sound through the Aleutian Islands relates to their nutritional status. Sea lion diets appear to have shifted from primarily small schooling fatty fishes to low-fat fish such as walleye ...
David D Kitts, Minh Dieu Huynh, Chun Hu, Andrew W Trites   +3 more
openaire   +1 more source

Pollock and “the Blob”: Impacts of a marine heatwave on walleye pollock early life stages

Fisheries Oceanography, 2020
AbstractThe North Pacific marine heatwave of 2014–2016 (nicknamed “The Blob”) impacted marine ecosystems from California to Alaska, USA, with cascading effects on fisheries and fishing communities. We investigated the effects of this anomalous ocean warming on early life stages of walleye pollock (Gadus chalcogrammus) in the Gulf of Alaska.
Lauren A. Rogers, Matthew T. Wilson, Janet T. Duffy‐Anderson, David G. Kimmel, Jesse F. Lamb   +4 more
openaire   +1 more source

Atresia of developing Oocytes in walleye pollock Theragra chalcogramma

Journal of Ichthyology, 2015
The present study describes the process and characteristic features of oocyte resorption throughout its developmental stages in T. chalcogramma (Pallas, 1814). Histological methods revealed two major resorption pathways: follicular and follicular-histiocytic atresia.
A. M. Privalikhin, K. A. Zhukova, O. G. Poluektova   +2 more
openaire   +1 more source

Processing technology for walleye pollock: surimi innovation

Fisheries Science, 2014
Imitation crab meat, first developed in Japan, is very popular in restaurants in Paris, appearing as “surimi” on the menu. Today, more than 300,000 tons of imitation crab meat are produced in modern imitation crab meat plants in North America, Europe, and Russia, and the term “surimi” has gained acceptance internationally.
openaire   +1 more source

Classification of Ovarian Stages of Walleye Pollock (Theragra chalcogramma)

Resiliency of Gadid Stocks to Fishing and Climate Change, 2008
Walleye pollock, Theragra chalcogramma, is the most commercially important species in the eastern Bering Sea. Estimates of maturity are critical for setting an appropriate harvest rate for pollock spawning biomass, and correct classification of ovaries into a maturity condition is necessary for accurate estimation of maturity.
Jennifer Stahl, Gordon Kruse
openaire   +1 more source

Stock assessment and management for walleye pollock in Japan

Fisheries Science, 2014
We review the stock assessment strategies and management procedures for walleye pollock Theragra chalcogramma in Japan. In Japan, walleye pollock is classified into 4 stocks. Because biological data, fishing conditions, etc. are different for each stock, the stocks are assessed by different methods.
Ken Mori, Yoshiaki Hiyama
openaire   +1 more source

An example of fisheries oceanography: Walleye pollock in Alaskan waters

Reviews of Geophysics, 1995
A major area of research in fisheries oceanography examines relationships between recruitment dynamics of fish populations and the marine environment. A primary goal is to understand the natural causes of variability in year‐class strength of commercially valuable species and apply this knowledge to management [Perry, 1994].
Jim Schumacher, Arthur W. Kendall
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