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Nocturnal feeding patterns of Mysis relicta in Lake Michigan, based on gut content fluorescence 1
Author(s) -
Grossnickle Nevin E.
Publication year - 1979
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1979.24.4.0777
Subject(s) - diel vertical migration , sunset , nocturnal , biology , ecology , phytoplankton , environmental science , fishery , nutrient , physics , astronomy
Fluorometric measurements of the gut contents of Mysis relicta were used to determine the relative amount of pheopigment per animal at 0.5, 3.5, and 6.5 h after sunset. Mysid guts always contained significantly greater relative amounts of pheopigments at 3.5 than at 0.5 h after sunset; changes between 3.5 and 6.5 h after sunset were less consistent. This is taken to indicate that mysids filter feed on phytoplankton throughout their summer diel vertical migrations in Lake Michigan.