Browsing by Subject "Daphnia"
Now showing items 2-7 of 7
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The effect of copper on kairomone-mediated responses by wild Daphnia pulicaria clones from along a copper gradient
(2009-12-23)Kairomones are infochemicals that benefit a heterospecific receiver. Chaoborus spp. release a kairomone from their gut when feeding on Daphnia spp. Daphnia respond to kairomone by shifting life history parameters or ... -
Factors mediating the distribution and impact of the non-native invertebrate predator Bythotrephes longimanus
(2013-06-17)Predicting the impacts of non-native species remains one of the greatest challenges to invasion ecologists. Because of their insularity, freshwater systems are particularly vulnerable to invasions, especially from non-native ... -
Food Quality Effects On Life History Trait Correlations In Daphnia
(2014-03-31)Life history theory assumes that correlations among fitness-related life history traits should be negative among individuals, reflecting resource allocation constraints among traits such as growth and reproduction. These ... -
Intra-Specific Variation in Sensitivity to Low Calcium in Daphnia Pulex
Freshwater systems experience many stressors that can affect aquatic communities; one such stressor is calcium decline. Cation depletion of surrounding soils and watersheds of many North American and Scandinavian lakes is ... -
Intraspecific Variation of Three Phenotypic Morphs of Daphnia pulicaria in the presence of a Strong Environmental Gradient
(2014-04-08)Freshwater lake ecosystems often exhibit strong oxygen, and temperature gradients across which many zooplankton species live. Daphnia sp. vary in their ability to up-regulate hemoglobin in response to low oxygen environments. ... -
Species response to rapid environmental change in a Subarctic pond
(2013-10-02)Unprecedented rates of anthropogenic environmental change have resulted in dramatic decreases in biodiversity worldwide. In order to persist during changes in both the abiotic and biotic environment resulting from anthropogenic ...