Open AccessCharacterization of feeding and downstream migration of juvenile chum salmon in the Kichiga river (north-eastern kamchatka)
Author(s) -
Еkaterina S. Voronova,
Т. Н. Травина,
А. М. Бирюков
Publication year - 2021
Publication title -
issledovaniâ vodnyh biologičeskih resursov kamčatki i severo-zapadnoj časti tihogo okeana/issledovaniâ vodnyh biologičeskih resursov kamčatki i severo-zapadnoj časti tihogo okeana
Language(s) - English
Resource type - Journals
eISSN - 2782-6236
pISSN - 2072-8212
DOI - 10.15853/2072-8212.2020.59.39-50
Subject(s) - juvenile , spring (device) , fishery , fish <actinopterygii> , juvenile fish , downstream (manufacturing) , geography , biology , ecology , physics , economics , thermodynamics , operations management
Analysis of the data of fish biology spring-summer researches in the Kichiga river basin in the period 2017–2019 for the first time brought results as next: characterized dynamics of chum salmon juvenile downstrean migration, including daily dynamics, revealed qualitative characteristics of the underyearlings, described diet of the juvenile migrants, demonstrated effects of the spring-summer hydrological regime on the intensity of the underyearling feeding. Also noted, that the conditions for the downstream migration of chum salmon in 2018 were maximum favouravle, and most likely that could enhance later juvenile survival.