Results 11 to 20 of about 1,309 (165)

«Wrong fish» or wrong hypotheses: what happens to nekton of the Pacific waters at Kuril Islands?

Известия ТИНРО, 2021
A phenomenon of undulating fluctuations of nekton abundance in the Kuroshio system is discussed on example of japanese sardine Sardinops melanostictus, as the most abundant and the most fluctuating species.
V. P. Shuntov, O. A. Ivanov
doaj   +1 more source

Investigation of inter-annual variation in the feeding habits of Japanese sardine (Sardinops melanostictus) and mackerels (Scomber spp.) in the Western North Pacific based on bulk and amino acid stable isotopes

Frontiers in Marine Science, 2023
Inter-annual variation in the feeding habits and food sources of Japanese sardine and mackerel at age-0 and age-1+ caught in the Kuroshio-Oyashio transition zone of the Western North Pacific were investigated based on analyses of bulk stable isotopes ...
Yosuke Ohno, Yu Umezawa, Takeshi Okunishi, Ryuji Yukami, Yasuhiro Kamimura, Chikage Yoshimizu, Ichiro Tayasu   +6 more
doaj   +1 more source

Environmental DNA in the Kuroshio reveals environment-dependent distribution of economically important small pelagic fish

Frontiers in Marine Science, 2023
IntroductionSmall pelagic fishes constitute large proportions of fisheries and are important components linking lower and higher trophic levels in marine ecosystems.
Zeshu Yu, Zeshu Yu, Marty Kwok-Shing Wong, Marty Kwok-Shing Wong, Jun Inoue, Sk Istiaque Ahmed, Tomihiko Higuchi, Susumu Hyodo, Sachihiko Itoh, Kosei Komatsu, Hiroaki Saito, Shin-ichi Ito   +11 more
doaj   +1 more source

Fleet operations at fishing of japanese sardine and chub mackerel in the Kuril waters in the modern period of high abundance of these species

Известия ТИНРО, 2022
Chub mackerel and japanese sardine fishery is overviweved for the period since 1976. Two blooms of high abundance were observed within this period for both species.
O. N. Kruchinin, M. A. Mizyurkin, E. A. Zakharov, V. M. Volotov, D. L. Shabelsky, N. L. Vakker   +5 more
doaj   +1 more source

Interannual dynamics of size, age composition and parameters of growth for japanese sardine Sardinops melanostictus in periods of its high abundance in the North-West Pacific

Известия ТИНРО, 2021
Interannual dynamics of size composition, age structure, and growth parameters are considered for japanese sardine Sardinops melanostictus in context of its recent and previous blooms and mass migrations to the Pacific waters at Kuril Islands and to the ...
V. A. Dudarev, A. I. Galeev
doaj   +1 more source

Molecular Characterisation and Reporter Gene Assay ofthe Three GnRH Isoforms and Two GnRH Receptors of a Clupeiform Fish, Japanese Sardine, Sardinops sagax melanostictus (Temminck & Schlegel, 1846)

Asian Fisheries Science, 2022
The gonadotropin-releasing hormone (GnRH) is an important gene involved in fish reproduction and its action is mediated by GnRH receptor (GnRHR).
SANNY DAVID PACHECO LUMAYNO, KOHEI OHTA, AKIHIKO YAMAGUCHI, MICHIYA MATSUYAMA   +3 more
doaj   +1 more source

On Stock and Migration-course of Japanese Sardine, Sardine melanosticta (T. and S)

NIPPON SUISAN GAKKAISHI, 1950
Some discussions on the fishing season, on the course of migration, on such facts in question and and on problem of the stock of Sardina melanosticta (T and S) are given in this article analysing the reports on the size of the fish catched, sent to us from 174 fishing guild.
YASUDA, H., SAKAI, T.
openaire   +2 more sources

Development of species‐specific multiplex real‐time PCR assays for tracing the small pelagic fishes of North Pacific with environmental DNA

Environmental DNA, 2022
Environmental DNA (eDNA) has become a popular non‐invasive method to study the presence of organisms in the environment. To study the ecological behavior and migration routes of small pelagic fishes that are difficult to trace with traditional capturing ...
Marty Kwok‐Shing Wong, Shigenori Nobata, Shin‐ichi Ito, Susumu Hyodo   +3 more
doaj   +1 more source

Effects of formalin preservation on egg size of small pelagic fish as major target species in ichthyoplankton surveys

Aquaculture, Fish and Fisheries, 2022
Preservation is critical for egg and larval samples from ichthyoplankton surveys. As growing interest is directed toward maternal effects on egg quality, historical collections of egg samples in formalin are potentially invaluable materials but concerns ...
Mitsuo Nyuji, Michio Yoneda, Masahiro Nakamura, Mikio Watai, Tohya Yasuda, Akinori Takasuka   +5 more
doaj   +1 more source

Statistical Studies on Biological Indices of Japanese Sardine.

NIPPON SUISAN GAKKAISHI, 1993
This report examines the relationships between six biological indices (condition factor, fat weight ratio, gonad somatic index, body length, mean age, and sex ratio) of Japanese sardine, the sardine stock biomass, and the sea surface temperature in the Doto region. 11, 707 individuals were collected by purse seine in July ?? Oct. during the Years 1978 ?
Koizumi, Noriyuki, Matsumiya, Yoshiharu, Wada, Tokio   +2 more
openaire   +1 more source