scholarly journals INTRA-SPECIES GROUPINGS OF CHUM SALMON ONCORHYNCHUS KETA (SALMONIDAE) OF THE AMUR RIVER AND THEIR DISTRIBUTION WITHIN THE BASIN

2019 ◽  
Vol 197 ◽  
pp. 21-34 ◽  
Author(s):  
S. F. Zolotukhin
Keyword(s):  
River Basin ◽  
Chum Salmon ◽  
Oncorhynchus Keta ◽  
Amur River Basin ◽  
Amur Basin ◽  
Amur River ◽  
Spawning Grounds ◽  
Different Types ◽  
The Amur River ◽  
Major Grouping

Chum salmon in the Amur River basin are represented by two races: summer and fall ones. For the summer race, one population with specific type of spawning grounds is known, but the fall race includes three populations with different types of spawning grounds. In total, four eco-geographical groupings of the species are separated in their reproduction by geographical boundaries of geomorphological zones, as well as temporally and ecologically. Chum salmon do not spawn in the Chinese part of the Amur basin in more than 50 years. In the Russian part, the summer chum salmon spawn completely in the hyporheic waters in late July — August, the major grouping of fall chum (77.1 %) spawns in the spring waters in September-November, other two groupings spawn in the hyporheic waters of the lower Amur in September (20.4 %) and in the spring waters of the lakes near the Amur mouth in October-November (2.5 %).

scholarly journals Artificial reproduction of pacific salmons in the Amur River basin: history, current state, prospects

2020 ◽  
Vol 200 (3) ◽  
pp. 530-550
Author(s):  
D. V. Kotsyuk
Keyword(s):  
River Basin ◽  
Chum Salmon ◽  
Japan Sea ◽  
Amur River Basin ◽  
Artificial Reproduction ◽  
Amur Basin ◽  
Fish Farms ◽  
Amur River ◽  
The Amur River ◽  
Artificial Origin

Experience of pacific salmon artificial reproduction is discussed. Generalized data on juveniles (mostly fall chum salmon) release from hatcheries in the Amur River basin are presented. Information about the fish eggs origin (collection points) and transportation to incubation is provided. Some local features of salmon hatcheries are noted. Thus, the hatcheries in the middle Amur (Teplovsky and Bijansky) used previously the eggs collected in local tributaries of the Amur but recently, in conditions of low abundance of spawners, they transfer the eggs for incubation from fish farms located in the lower Amur. On the contrary, the hatcheries in the lower Amur (Udinsky, Gursky, and Anyuisky) collected the eggs in many dispersed sites in the beginning of their exploitation, but later, when local herds of artificial origin had appeared, they collected the eggs from producers coming to the hatcheries. This experience of eggs collection in dispersed temporary sites could be useful for periods of low stocks of pacific salmons in the Amur basin. The last such period started in 2017, so the fishery officials, as the Amur branch of Glavrybvod, can use this approach. Large transfers of chum eggs within the basin and from other rivers of the Okhotsk Sea and Japan Sea basins, presumably could affect genetic diversity, population structure and gene pool of this species. First results on evaluation efficiency of salmon hatcheries are discussed on the data of otolith marking started in 2015. Negative dependence of chum salmon catch on release of their juveniles is found: increasing of the juveniles output does not provide higher catches. Besides, the number of producers returned to hatcheries does not depend on the number of juveniles released from these hatcheries in the past, but corresponds with general dynamics of salmon stocks in the entire Amur basin. We believe that returns of chum salmon of wild and artificial origin have similar changes caused by same factors influencing on fish in the river and marine periods of their life.

scholarly journals BASIS FOR SELECTION OF RIVERS FOR MONITORING ON THE STOCKS OF CHUM AND PINK SALMON IN THE AMUR RIVER

2019 ◽  
Vol 199 ◽  
pp. 19-34
Author(s):  
S. F. Zolotukhin
Keyword(s):  
20Th Century ◽  
River Basin ◽  
Chum Salmon ◽  
Pink Salmon ◽  
Species Number ◽  
Amur River Basin ◽  
Left Bank ◽  
Amur River ◽  
Spawning Grounds ◽  
The Amur River

The monitoring of chum and pink salmon escapement to spawning grounds in the Amur River basin was stopped in 2009. To start it again, a proved choice of the rivers is necessary for adequate controlling of these species number, by the spawning habitats of their population groups within the basin. For this purpose, results of the monitoring in 1949–2000 and the data on human settlements in the medieval times are analyzed. The lower reaches of the Amur were anciently inhabited by the paleoasiatic Nivkh people and the upper reaches where the fall chum spawned in spring waters were inhabited by the people of Pokrovskaya archeological culture — their burial grounds coincided with the spawning area of fall chum salmon. To reach these spawning grounds, fall chum salmon migrated up to the distance of 3427 km from the Amur mouth, but since the 20th century they occur rarely in the upper reaches of the Amur, in particular within Chinese territory where they are not observed in more than 50 years; recently they spawn in spring waters at the distance 500–1200 km from the Amur mouth, mainly in its right tributaries. The reproduction centers of other two populations of chum salmon, as the summer chum and fall chum breeding in hyporheic waters, are located in the Amgun River basin (the lower left tributary of the Amur). The fourth population is the lake chum salmon breeding in spring waters of Lake Chlya located on the left bank in the lower reaches of the Amur River. Centers of reproduction for both pink salmon populations, differentiated by even and odd years of spawning, are located in the Amgun River. Several test rivers are selected within all mentioned centers of reproduction, they are: Kerbi, Duki, Im, Somnya, Aksha, Khilka, Beshenaya, Gur, Anui, Khor, Kur, and Bira. This list is similar to the list of the rivers where chum and pink salmons were monitored in the 20th century

scholarly journals GIS methods for inventory of pacific salmons spawning grounds in the Amur River

2020 ◽  
Vol 200 (3) ◽  
pp. 730-746
Author(s):  
V. V. Sviridov ◽  
S. F. Zolotukhin
Keyword(s):  
Information System ◽  
Amur River Basin ◽  
Amur Basin ◽  
Gis Technology ◽  
Amur River ◽  
Spawning Grounds ◽  
Gis Technologies ◽  
The Amur River ◽  
Gis Methods ◽  
Adequate Management

 Inventory of spawning grounds is an important tool for estimation of pacific salmons abundance and adequate management of their stocks. A set of the most up-to-date, relevant and effective methods based upon geographic information system (GIS) is substantiated, designed, developed and scheduled to implementation for inventory of the spawning grounds in the Amur basin. Abilities of GIS-technologies for optimization of the surveys planning and conducting and for processing, analysis, visualization and presentation of their results due to accelerated, simplified and enhanced workflow are shown. Three components of modern corporative GIS are presented: server, desktop and mobile ones. The system is partially loaded with the data about spawning grounds, tested for the basic operations as data collection, multi-user editing, geoprocessing, spatial analysis, cartographic visualization, protected web publication, etc., and adjusted and improved using the results of this testing for further implementation in complex fisheries surveys in the Amur River basin. Proposed GIS-technology is modifiable and scalable, so can be spread to other species and areas after appropriate modification; the GIS can be specialized for certain practical tasks.

The sympatric whitefishes Coregonus ussuriensis and C. chadary from the Amur River basin: Morphology, biology and genetic diversity

2017 ◽  
Vol 189 (3) ◽  
pp. 193-207 ◽  
Author(s):  
NickolaiA. Bochkarev ◽  
ElenaI. Zuykova ◽  
SergeyA. Abramov ◽  
ElenaV. Podorozhnyuk ◽  
DmitryV. Politov
Keyword(s):  
Genetic Diversity ◽  
River Basin ◽  
Amur River Basin ◽  
Amur River ◽  
The Amur River ◽  
Basin Morphology

New taxa in Arundinella and Calamagrostis (Poaceae) from the Russian Far East

2017 ◽  
Vol 48 ◽  
pp. 13-22
Author(s):  
N. S. Probatova
Keyword(s):  
River Basin ◽  
New Taxa ◽  
Chromosome Numbers ◽  
Russian Far East ◽  
Far East ◽  
Amur Region ◽  
Amur River Basin ◽  
Amur River ◽  
The Amur River ◽  
The Russian Far East

Calamagrostis are described from the Russian Far East. Chromosome numbers are reported for two new taxa. Calamagrostis burejensis Prob. et Barkalov, 2n = 28 (sect. Calamagrostis), C. zejensis Prob., 2n = 28 (sect. Deyeuxia), and C. × amgunensis Prob. (C. amurensis Prob. × C. neglecta (Ehrh.) G. Gaertn., B. Mey. et Scherb. s. l.) are described from the Amur River basin (Amur Region or Khabarovsk Territory); Arundinella rossica Prob. (sect. Hirtae) and Calamagrostis kozhevnikovii Prob. et Prokopenko (sect. Calamagrostis) from Primorye Territory.

scholarly journals The first record of Helobdella nuda (Hirudinida, Glossiphoniidae) in lake Baikal

2012 ◽  
Vol 46 (5) ◽  
pp. 40-41 ◽  
Author(s):  
I. A. Kaygorodova ◽  
S. Yu. Utevsky
Keyword(s):  
River Basin ◽  
Lake Baikal ◽  
First Record ◽  
Shallow Waters ◽  
Amur River Basin ◽  
Amur River ◽  
The Amur River

The First Record of Helobdella nuda (Hirudinida, Glossiphoniidae) in Lake Baikal. Kaygorodova I. A., Utevsky S. Yu. - By far, the leech species Helobdella nuda (Moore, 1924) was known from China and the Amur River basin. It is found to occur in shallow waters of Lake Baikal.

scholarly journals Topography as a macroscopic index for the dissolved iron productivity of different land cover types in the Amur River Basin

2010 ◽  
Vol 4 ◽  
pp. 85-89 ◽  
Author(s):  
Takeo Onishi ◽  
Muneoki Yoh ◽  
Hideaki Shibata ◽  
Seiya Nagao ◽  
Masayuki Kawahigashi ◽  
...  
Keyword(s):  
Land Cover ◽  
River Basin ◽  
Amur River Basin ◽  
Amur River ◽  
Land Cover Types ◽  
Dissolved Iron ◽  
The Amur River
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