Open AccessOn distribution of migratory fry of pink salmon in the stream of a small Sakhalin river
Author(s) -
А. М. Каев,
Юрий Иванович Игнатьев
Publication year - 2015
Publication title -
izvestiâ tinro/izvestiâ tihookeanskogo naučno-issledovatelʹskogo rybohozâjstvennogo centra
Language(s) - English
Resource type - Journals
eISSN - 2658-5510
pISSN - 1606-9919
DOI - 10.26428/1606-9919-2015-180-93-98
Subject(s) - oncorhynchus , fishery , distribution (mathematics) , chinook wind , abundance (ecology) , geography , stream flow , fish <actinopterygii> , biology , mathematics , cartography , drainage basin , mathematical analysis
Distribution of migratory fry of pink salmon Oncorhynchus gorbuscha in the stream of the Voznesenka River (south-eastern Sakhalin) is investigated and its high inhomogeneity is revealed. One of the reasons is the stream structure - the fry aggregate mainly in the main flow. Another reason could be the fry behavior - they instinctively try to form aggregations with visual contact, in particular in relatively light nights or in conditions of their high abundance (short distance between the individuals).