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The migration of ultrasonic‐tagged bream, Abramis brama (L), in Lake Constance (Bodensee‐Untersee)
Author(s) -
Schulz U.,
Berg R.
Publication year - 1987
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1987.tb05245.x
Subject(s) - littoral zone , pelagic zone , biology , benthic zone , zooplankton , diel vertical migration , fishery , ecology , oceanography , geology
From May to October 1983 the migration of six adult bream was examined by long‐term ultrasonic tagging experiments. Two different migration types were observed: diurnal rhythmical migrations between the littoral and pelagic zones, and sporadic locomotions such as spontaneous excursions of several kilometers distance. At night, during their sojourn in the shallow littoral zone, bream feed intensively on benthic organisms; during their stay in the pelagic areas they presumably feed on zooplankton. Sporadic changes of place enable the bream to feed on locally abundant food resources. During the spawning season, migration contributes to successful spawning.