Title: Life-histories and habitat selection in daphnia - divergent life-histories of daphnia-magna clones differing in phototactic behavior
Authors: De Meester, Luc # ×
Issue Date: Apr-1994
Publisher: Springer verlag
Series Title: Oecologia vol:97 issue:3 pages:333-341
Abstract: To test the hypothesis of co-adaptation of life histories and daytime vertical distribution (vertical migration behaviour) in Daphnia, life history characteristics were analysed for two positively, three negatively, and four intermediately phototactic Daphnia magna clones. Clones with different phototactic behaviour were found to have divergent life history strategies, with positively phototactic clones being good exploiters under the non-limiting conditions provided in the laboratory, i.e. low density (1 ind./1), high food concentration (6,5-7 10(5) Scenedesmus cells/ml, restored daily) and high temperature (20-degrees-C). They realized a high intrinsic rate of increase at a small adult body size through rapid development, at a cost of producing small neonates. Negatively and intermediately phototactic clones had larger adult body sizes, and produced larger neonates that were more starvation-resistant than those of positively phototactic clones. Selection for high intrinsic rate of increase in intermediately phototactic clones was mediated through the production of large clutches.
ISSN: 0029-8549
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Ecology, Evolution and Biodiversity Conservation Section
× corresponding author
# (joint) last author

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