Premium
Spatial heterogeneity of Daphnia genotypes: Vertical migration and habitat partitioning 1
Author(s) -
Weider Lawrence J.
Publication year - 1984
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.1984.29.2.0225
Subject(s) - diel vertical migration , daphnia pulex , biology , daphnia , ecology , population , littoral zone , habitat , horizontal and vertical , spatial distribution , zooplankton , geography , demography , geodesy , sociology , remote sensing
Diel vertical migration surveys of a Daphnia pulex population consistently demonstrated significant differences in vertical distribution and migratory activity among electrophoretically distinct genotypes, strongly suggesting a genetic component to vertical migration. These results imply that a population’s pattern of vertical migration can be highly dependent on its genetic composition and that temporal shifts in the overall vertical migration pattern may result from clonal succession as well as from individual clonal variation. Vertical separation of genotypes can also influence the horizontal structure of the population; genotypes residing in deep water become rarer toward the shallow littoral zone.