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- Title
Long-Term Replacement Cycles in Cladoceran Communities: A History of Predation.
- Authors
Kerfoot, W. Charles
- Abstract
Populations of the waterflea Bosmina undergo temporal replacement cycles (seasonal successions of clones or closely-related sibling species) in many modern lakes, where long-featured winter clones are subsequently replaced by short-featured summer clones. Inspection of lake sediment reveals that populations have also undergone long-term replacements. Remarkably well-preserved remains, heavily biased towards summer morphology by production dynamics, document a progressive shift from late-glacial long-featured phenotypes to recent short-featured phenotypes. Several lines of evidence suggest that these long-term substitutions reflect a changing balance between planktivorous fishes and predatory copepods.
- Subjects
COPEPODA; CLONING; LAKE sediments; PHENOTYPES; PREDATION
- Publication
Ecology, 1981, Vol 62, Issue 1, p216
- ISSN
0012-9658
- Publication type
Article
- DOI
10.2307/1936683