Open AccessExperimental study of the European river lamprey Lampetra fluviatilis (L.) downstream migrating smolts rheoreaction under various illuminations
Author(s) -
А. О. Звездин,
А. О. Звездин,
Д. С. Павлов,
D. Pavlov,
И. А. Цимбалов,
И. А. Цимбалов,
A. V. Kucheryavyy,
Александр Васильевич Кучерявый
Publication year - 2019
Publication title -
doklady akademii nauk. rossijskaâ akademiâ nauk
Language(s) - English
Resource type - Journals
ISSN - 0869-5652
DOI - 10.31857/s0869-56524874469-472
Subject(s) - lampetra , lamprey , downstream (manufacturing) , fishery , environmental science , biology , engineering , operations management
Rheoreaction of the downstream migrating smolts of the European river lamprey was studied in the experimental conditions at illuminations of day and night intensity. It was found that at the daytime the smolts are mostly dormant and if move downstream then in active-passive form (with the head against the stream, and their speed going beyond the velocity). This data is well within the findings on the night downstream migration of the smolts during the 24 h period in natural conditions. Thus, the downstream migration of the smolts has an active form.