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The influence of fish-exuded chemical signals on the carbon budget of Daphnia.

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons56954

Stibor,  Herwig
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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Zitation

Stibor, H., & Macháček, J. (1998). The influence of fish-exuded chemical signals on the carbon budget of Daphnia. Limnology and Oceanography, 43(5), 997-1000.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-E161-8
Zusammenfassung
Respiration and carbon assimilation rates were measured in juvenile instars of Daphnia magna cultivated either in fish-treated or in control medium without fish exudates. Respiration and carbon assimilation rates increase proportionally to Daphnia body size. This relationship did not differ between fish-influenced and control daphnids throughout juvenile development. The results imply that observed Life-history shifts in Daphnia exposed to fish exudates are facultative changes and not the result of changes in the carbon budget induced by other predator-induced defense mechanisms or experimental setups.