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Upwelling Water as a Factor Influencing Choice of Spawning Sites by Brook Trout (Salvelinus fontinalis)
Author(s) -
Webster Dwight A.,
Eiriksdottir Gudny
Publication year - 1976
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1976)105<416:uwaafi>2.0.co;2
Subject(s) - salvelinus , fontinalis , trout , upwelling , aquifer , fishery , spring (device) , environmental science , geology , oceanography , biology , fish <actinopterygii> , groundwater , geotechnical engineering , mechanical engineering , engineering
Brook trout (Salvelinus fontinalis) generally select areas of upwelling spring water for spawning under natural conditions. When presented with suitable gravel containing an artificially controlled aquifer of about 0.1% the area of a circular tank, female trout selected spawning sites that were either in close proximity to the upwelling water or adjacent to it in 21 of 22 trials. Average time lapse for completion of spawning was about 30 hours. Use of a tank several times larger than 1.9 m 2 would probably improve conditions for making more precise observations on discrimination of aquifers under laboratory conditions.