New data on jacks of masu salmon Oncorhynchus masou (Salmonidae) in the waters of Primorye Region
https://doi.org/10.26428/1606-9919-2026-206-149-160
EDN: PCBNRJ
Abstract
New data on distribution of masu salmon jacks in the waters of Prymorye Region are presented. Scales of three masu salmon jacks (two from the Serebryanka River and one from the Samarga River area) were analyzed. Age and previous maturation as parr were estimated. In the Serebryanka River, masu salmon were represented by two previously known life history forms: the jack that did not mature in the river as parr, and the jack previously matured as dwarf male. Compared to masu salmon from the rivers of southern Primorye, the specimens found in northern Primorye were larger: their fork length ranged from 345 to 403 mm.
Keywords
masu salmon,
Oncorhynchus masou,
jack,
fish scale,
fish age,
spawning mark,
Serebryanka River,
Samarga River,
Primorye Region
Supporting agencies: The study had no sponsorship
About the Authors
V. V. Tsygir
Pacific branch of VNIRO (TINRO)
Russian Federation
Russian Federation
Victor V. Tsygir, chief specialist
690091; 4, Shevchenko Alley; Vladivostok
E. I. Barabanshchikov
Pacific branch of VNIRO (TINRO)
Russian Federation
Russian Federation
Evgeny I. Barabanshchikov, Ph.D., head of laboratory
690091; 4, Shevchenko Alley; Vladivostok
E. V. Kolpakov
Pacific branch of VNIRO (TINRO)
Russian Federation
Russian Federation
Evgeny V. Kolpakov, chief specialist
690091; 4, Shevchenko Alley; Vladivostok
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For citations:
Tsygir V.V., Barabanshchikov E.I., Kolpakov E.V. New data on jacks of masu salmon Oncorhynchus masou (Salmonidae) in the waters of Primorye Region. Izvestiya TINRO. 2026;206(1):149-160. (In Russ.) https://doi.org/10.26428/1606-9919-2026-206-149-160. EDN: PCBNRJ
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