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A Standpipe Screen Design to Prevent Fry Loss during Tank Cleaning
Author(s) -
Clayton Richard D.,
Summerfelt Robert C.
Publication year - 2011
Publication title -
north american journal of aquaculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.432
H-Index - 41
eISSN - 1548-8454
pISSN - 1522-2055
DOI - 10.1080/15222055.2011.544945
Subject(s) - trap (plumbing) , fish <actinopterygii> , fishery , biology , environmental science , environmental engineering
Intensive larviculture of walleye Sander vitreus and other fishes require fine screens over the standpipe to retain the small fish. The high feeding rate of small (<710‐μm) microparticulate feed requires that screens be removed for daily cleaning with pressurized water to remove waste feed, oil, and biofilm. Standard screens have an open bottom that can trap fry in the space between the standpipe and the screen when the screen is replaced. Here we describe a modification of a standpipe screen that prevents the fry from entrapment in the space between screen and standpipe. Received April 23, 2010; accepted June 22, 2010