Results 171 to 180 of about 2,117 (203)

Social and reproductive behavior of a captive group of walleye pollock,Theragra chalcogramma

Environmental Biology of Fishes, 1991
The social and reproductive behavior of a group of four male and seven female walleye pollock,Theragra chalcogramma, were observed in a large tank. Pollock spent most of their time swimming in a loose aggregation near the surface. Males descended from the aggregation more often than females to follow and make physical contact with other males as well ...
Troy A. Baird, Bori L. Olla
openaire   +1 more source

Some Aspects of the Walleye Pollock (Theragra chalcogramma) Biology and Fishery Related to the Size and Age Structure in the Southwestern Chukchi Sea

Russian Journal of Marine Biology, 2022
A. Buslov, E. E. Ovsyannikov
semanticscholar   +1 more source

The Distribution of Walleye Pollock, Theragra chalcogramma, and Conditions of its Habitat off the Southern Kuril Islands

Russian Journal of Marine Biology, 2021
S. L. Ovsyannikova, E. E. Ovsyannikov, Y. Novikov   +2 more
semanticscholar   +1 more source

Spermatogenesis and Testes Maturity Scale in Walleye Pollock Theragra chalcogramma (Gadidae)

Journal of Ichthyology, 2018
In this paper walleye pollock spermatogenesis features were investigated. Male germ cells morphology and sizes were shown. The male length, gonadosomatic and hepatosomatic indexes correlated with gonadal maturity. Additional previously unidentified physiological condition TR was determined in maturity scale of walleye pollock testes.
openaire   +1 more source

The Influence Of Polymorphic Characteristics On The Alaska Pollock (Theragra Chalcogramma) Fishing Efficiency

2000
No abstracts are to be cited without prior reference to the author.Interspecies behavioural polymorphism of captured populations promote to high level of selectivity in catching popula-tions. This can decrease the polymorphism level and accordingly worsen biological parameters of captured populations.
Lapshin, Oleg M., Gerasimov, Yuri V., Izumov, Yuri G., Istomin, Ivan G.   +3 more
openaire   +1 more source

Spawning of walleye pollock (Theragra chalcogramma) off the Southwestern coast of Kamchatka

Russian Journal of Marine Biology, 2009
The results of ichthyoplankton surveys conducted in 2007–2008 showed that waters off Southwest Kamchatka and North Kuril Islands were areas of mass spawning of walleye pollock. The peak spawning occurred during the last 10 days of April and in early May, which was much later than the peak at the main spawning site off West Kamchatka.
openaire   +1 more source

Biologische Untersuchungen am Alaska-Pollock (Theragra chalcogramma)

1986
Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in ...
openaire   +2 more sources

Association of Walleye Pollock, Theragra chalcogramma, with the Jellyfish, Cyanea

Copeia, 1974
Jack M. van Hyning, R. Theodore Cooney
openaire   +1 more source

Effects of microwave heating on the gelation properties of heat-induced Alaska Pollock (Theragra chalcogramma) surimi

Food science and technology international = Ciencia y tecnologia de los alimentos internacional, 2018
Xiangyu Liu, D. Feng, Lei Ji, Zhang Tao, Yong Xue, C. Xue   +5 more
semanticscholar   +1 more source

Effects of Vessel Noise on Walleye Pollock (Theragra chalcogramma) Behavior

2023
Mikhail Yu. Kuznetsov, Vladimir I. Polyanichko, Igor A. Ubarchuk   +2 more
openaire   +1 more source