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he effect of whole‐lake fish community manipulations on Daphnia migratory behavior
Author(s) -
Dini Michael L.,
Carpenter Stephen R.
Publication year - 1991
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.1991.36.2.0370
Subject(s) - daphnia , predation , fish <actinopterygii> , extant taxon , biology , diel vertical migration , ecology , zoology , fishery , zooplankton , evolutionary biology
A four‐summer study of vertical migration by Daphnia was conducted in two neighboring lakes during a two‐stage fish community manipulation. This manipulation produced discrete periods of low and high planktivory by fish. The migration pattern was variable and weak during the low predation stage, but became consistent and intense within weeks of the change to high levels of predation, confirming the pre‐eminence of predation avoidance among several extant hypotheses.