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Effect of fenitrothion on the foraging behavior of juvenile atlantic salmon
Author(s) -
Morgan M.J.,
Kiceniuk J. W.
Publication year - 1990
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620090412
Subject(s) - fenitrothion , salmo , foraging , juvenile , fishery , fish <actinopterygii> , chemistry , biology , zoology , pesticide , ecology
Juvenile Atlantic salmon ( Salmo salar ) were exposed for 7 d to sublethal concentrations of technical grade fenitrothion and an operational formulation containing 11% fenitrothion Foraging behavior of the salmon was then tested in a stream tank Concentrations of 0 02 and 0 16 μl/L of technical grade fenitrothion and the operational formulation containing 0 08 and 0 16 μl/L of fenitrothion caused a significant decrease in the efficiency of the salmon's attack sequence These concentrations, and a concentration of 0 005 μl/L technical grade fenitrothion and 0 004 μl/L fenitrothion in the operational spray, produced a significant decrease in the salmon's reaction distance to prey All concentrations except for 0 004 μl/L fenitrothion in the operational formulation caused a significant decrease in the number of ingestions of prey made by the fish These results suggest that foraging behavior in salmon is impaired by exposure to very low levels of fenitrothion