Assessment of macrozoobenthos quality in the Bolshaya River (Western Kamchatka) in connection with escapements of Pacific salmon spawners-Reference-Cited by-同舟云学术

Assessment of macrozoobenthos quality in the Bolshaya River (Western Kamchatka) in connection with escapements of Pacific salmon spawners

Published:2023-01-14 Issue:65 Volume:1 Page:66-79
ISSN:2782-6236
Container-title:The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean
language:
Short-container-title:Issledovaniâ vodnyh biologičeskih resursov Kamčatki i Severo-Zapadnoj časti Tihogo okeana

Author:

Kalchenko E. I.¹,Travina T. N.¹,Pokhodina M. A.¹,Rastyagaeva N. A.¹,Popkov A. A.²

Affiliation:

1. Kamchatka Branch of Russian Federal Research Institute of Fisheries and Oceanography (KamchatNIRO)

2. Pacific Branch of Russian Federal Research Institute of Fisheries and Oceanography (TINRO)

Abstract

The paper shows mechanisms of influence of organic matter of marine origin entering the Bolshaya River basin with spawning escapement of Pacific salmon on the quality of freshwater macrozoobenthos. It has been found out that larvae of amphibiotic insects can receive marine nutrients through direct consumption of benthos in summer-autumn period and indirectly through trophic chains for a long time (till spring of the next year). The effect of Pacific salmon spawning escapements on such invertebrate characteristics as body weight, content of lipids and fatty acid-markers of food sources (phytoplankton, bacterioplankton or detritus) has been established. It is concluded that the trophic conditions of macrozoobenthos organisms, the food items of juvenile fish, have improved due to the intake of more marine nutrients.

Publisher

Kamchatka Research Institute of Fisheries and Oceanography

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