КамчатНИРО

Kamchatka Research Institute of Fisheries and Oceanography

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HISTORICAL REVIEW OF STUDIES OF AVACHINSKAYA BAY AND PRINCIPLE RESULTS OF COMPLEX ECOLOGICAL MONITORING 2013
Е.V. Lepskaya, О.B. Tepnin, V.V. Kolomeitsev, Е.А. Ustimenko, N.V. Sergeenko, D.S. Vinogradova, V.D. Sviridenko, М.А. Pokhodina, V.А. Schegolkova, V.V. Maksimenkov, А.А. Polyakova, R.S. Galyamov, S.L. Gorin*, М.V. Koval
HYDROLOGICAL REGIME, HYDROCHEMICAL BACKGROUND, PHYTOPLANKTON, ZOOPLANKTON, SANITARY MICROBIOLOGY, ECOLOGICAL MONITORING, AVACHINSKAYA BAY
The article provides brief historical review of ecological studies for Avachinskaya Bay. Results of complex monitoring provided by KamchatNIRO in 2013 are demonstrated. The data were compared to the literature and archival data. Presence in mineral compounds in spring time is shown for nitrogen and phosphorous. In the course of warming and flooding the bay obtains increased number of organic substances. Since 2003 the average concentration of biogenic elements has been almost stable. In 2013, like in the late 1980s, diatom microalgae were dominating in phytoplankton. The maximal bloom of the phytoplankton was observed in autumn. Potentially toxic microalgaes Alexandrium tamarense-complex (producing saxitoxin) and Pseudonitzschia seriata-complex (proucing domoic acid) have been found in August and in autumn respectively (in the concentrations 1000 cells/l and 20 000 cells/l, both requiring to launch toxicological control of fish and selfish for food if it were in Europe or North America). Predominant zooplankton complex was quite sustainable from 1988. In 2013 the maximum of zooplankton was observed in early summer (June) and minimum — in mid summer (July). The most unsatisfactory plot on sanitary and microbiological indexes in 2013 was the site of the city central beach neighboring area of Kultushnoye Lake outlet.
(P.5)

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DISTRIBUTION AND CATCH DYNAMICS OF NORTHERN SHRIMP PANDALUS BOREALIS ALONG THE SOUTHWEST COAST OF KAMCHATKA IN WINTERSPRING PERIOD
O.G. Mikhailova

NORTHERN SHRIMP, KAMCHATSKO-KURILSKAYA SUBAREA, FISHERY, DISTRIBUTION, MIGRATIONS, CATCH
The paper describes distribution and migrations of Northern shrimp within Kamchatsko-Kurilskaya subarea basing on the data obtained during winter-spring fishery period. Large aggregations of commercial shrimp have been delineated. Fishery analysis has been carried out, regularities of depth distribution of catches in different months have been shown.
(P.22)

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HYDROACOUSTIC ASSESSMENT OF ADULT ESCAPEMENT OF PACIFIC SALMON (ONCORHYNCHUS) IN SMALL AND MEDIATE RIVER SYSTEMS
E.S. Fadeev

HYDROACOUSTICS, COMPLEX “NETCOR”, QUANTITATIVE EVALUATION, SPAWNERS, PACIFIC SALMONS, THE AZABACH’E LAKE, THE KIKHCHIK RIVER
Abundance of sockeye salmon Oncorhynchus nerka and coho salmon O. kisutch spawners in the Azabach’e Lake and Kikhchik River respectively was assessed with the use of “NetCor” hydroacoustic complex in 2013. It has been figured out operation specifics of the device at mentioned water bodies and recommendations on the use in order to improve quantitative valuation of Pacific salmon in streams of Kamchatka. Comparative analysis was made for data obtained from using the hydroacoustic complex, visual observations from the air and from the land. The number of spawners in the channel of Azabach’e Lake reviled by the hydroacoustic method was strongly different from the number estimated from the helicopter. The difference possibly may be caused by extensive predation of bears on spawning grounds, reducing the number of fish. An erroneous counting chars as Pacific salmon, unavoidable for the hydroacoustic complex, also may distort true number of Pacific salmon spawners
(P.29)

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KILLER WHALES (ORCINUS ORCA) AND GREENLAND HALIBUT (REINHARDTIUS HIPPOGLOSSOIDES) FISHERY IN THE SEA OF OKHOTSK
S.I. Kornev, O.A. Belonovich, S.V. Nikulin

KILLER WHALES, GREENLAND HALIBUT, SEA OF OKHOTSK, BOTTOM NETS, LONGLINES, COMMENSALISM, CATCH PROTECTION
Data of the visual observations on killer whales commensalism during greenland halibut fisheries in the Sea of Okhotsk are presented. Estimation of consumed fish was calculated during both bottom net and longline fisheries by single vessels and suggestions on total fishermen losses in the Sea of Okhotsk were formulated. The preliminary catalogue of the killer whales met during the fishery has been composed.
(P.35)

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THE MAIN EPIZOOTIC RESEARCH RESULTS OF COMMERCIAL CRUSTACEANS IN KAMCHATKA
Т.V. Ryazanova, Е.А. Ustimenko

CRABS, INFECTION DISEASES, PARASITIC DISEASES, PREVALENCE, KAMCHATKA WATERS
This paper provided some data 2012–2013 years on research of infectious and parasitic diseases and their prevalence in populations of ten harvested species of crustaceans from western Kamchatka shelf and the western Bering Sea. The data were obtained on the pathogenic agents and their impact on the organism of crustaceans. Here presents the data on microsporidia invasions in shrimps. The analysis of the data of visual counting in catches of crabs with signs of pathology, allowed us to estimate the prevalence of diseases in the areas of research.
(P.51)

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IDENTIFICATION OF EARLY RIVER FORM OF SOCKEYE SALMON IN THE OZERNAYA RIVER BASIN WITH MICROSATELLITE LOCI
О.А. Pilganchuk, N.Yu. Shpigalskaya, V.A. Dubynin, О.N. Saravanskiy, U.O. Muravskaya, N.V. Varnavskaya

SOCKEYE SALMON, SEASONAL FORMS, MICROSATELLITES, TEMPORAL STABILITY, IDENTIFICATION
Some results of allelic frequencies analysis of five microsatellite loci — Oki1a, Oki1b, Oki6, Ots107, Ots3 in sockeye salmon samples taken from the Ozernaya River basin are presented in this paper. Two seasonalecological forms differing in these features have been marked out, corresponding to early and late spawning periods. Temporal stability of used molecular-genetic markers has been confirmed. Reference database on allelic frequencies of microsatellite loci has been broadened, its resolving capacity has been defined. It is shown, that acuracy of genetic identification of samples from mixed river catches occured in the Ozernaya River is on the level 83% for sockeye salmon of early spawning period and 84% — for that of late spawning period. Using of allelic frequencies of microsatellite loci for identification of mixed river samples let to determine the ratio of individuals of the distinguished seasonal forms in different periods of spawning running. It is shown, that individuals, anadromous migration of which occurs till the middle July, with high probability may be referred to the early river form.
(P.62)

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VARIETY OF MICROSATELLITE LOCI IN SAMPLES OF WALLEYE POLLOCK FROM SPAWNING AGGREGATIONS IN THE OKHOTSK AND BERING SEAS AND IN PACIFIC OCEAN WATERS, ADJACENT TO THE NORTH KURILE ISLANDS
V.V. Savenkov, N.Yu. Shpigalskaya, A.I. Varkentin, О.А. Pilganchuk, U.О. Мuravskaya, О.N. Saravanskiy

WALLEYE POLLOCK, MICROSATELLITE LOCI, INTRASPECIFIC COMPLEXITY, GENETIC VARIETY
Results of examining variety of microsatellite loci in samples of walleye Pollock from the Okhotsk and Bering Seas are provided. The loci Gmo-C86, Gmo-C83, Gmo-G18 and Gmo3 are demonstrated as most informative to provide differentiation of walleye Pollock individuals. A very high level of genetic variety in examined samples has revealed. There is no compliance revealed between quantitative estimations for genetic difference among Fst samples and geographic distances between the samples. The most distinct sample among those from the Okhotsk Sea is the sample from the Shelikhov Gulf
(P.72)

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ESTIMATION OF EGG LOSSES WASTE AND PRODUCTION OF WALLEYE POLLOCK (THERAGRA СHALCOGRAMMA) IN THE CANYONS OF THE AVACHINSKY GULF
O.I. Ilin, N.P. Sergeeva

CANYON, WALLEYE POLLOCK, FISH EGGS, STAGE OF DEVELOPMENT, LOSSES
It is known about the principal spawning grounds of the East Kamchatkan walleye pollock population that they are in the deep canyons of Kronotsky and Avachinsky Gulfs and on the shelf of Southeast Kamchatka. Evaluation of daily production and loss of the eggs in the canyons on the data of ichthyoplankton surveys is a challenge. Math simulation was tried for estimation of the total egg production, the time span and the pick of spawning and the coefficients of loss in the canyons of Avachinsky Gulf for 2003–2013.
(P.81)

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FORECASTING THE RUNS OF PACIFIC SALMON (FOR EXAMPLE – A COHO SALMON OF THE WESTERN KAMCHATKA) ON THE BASE OF “STOCK–RECRUITMENT” MODELS AND TIME SERIES EXTRAPOLATION SIMULATIONS
M.G. Feldman, E.A. Shevlyakov, Zh.Kh. Zorbidi

PACIFIC SALMON, COHO SALMON, FORECASTING, TIME SERIES, AUTOREGRESSION, “STOCK–RECRUITMENT”, ARIMA, DISTRIBUTED LAG
The paper provides analysis of the issues of forecasting runs of Pacific salmon. The stock used as a basis in simulation was the West Kamchatkan stock of coho salmon Oncorhynchus kisutch. Simulations of two classes were compared and used in regression analysis: of time series and of the relationship between the spawning stock and the recruitment. It is suggested to perform the forecast either as a product of probability density of forecasts of different models or as an average weighted result of density-based forecasts of several regression models.
(P.87)

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