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Egg predation by copepods in Daphnia brood cavities

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons56691

Gliwicz,  Z. Maciej
Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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

Gliwicz, Z. M., & Stibor, H. (1993). Egg predation by copepods in Daphnia brood cavities. Oecologia, 95(2), 295-298.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-E3EA-A
Zusammenfassung
Both field observations and enclosure experiments show that juvenile copepods enter Daphnia brood cavities to feed on Daphnia eggs and embryos. The ability to perform such in vivo exploitation is reported for both cyclopoid and calanoid copepods. Copepodites of Acanthocyclops robustus (G.O. Sars) were found to eat eggs in brood cavities of D. magna, D. pulex and D. pulicaria in experimental enclosures rich in algae. Copepodites of Eudiaptomus gracilus (G.O. Sars) were found in brood cavities of D. hyalina in a mesotrophic lake. The copepods' intrusions into brood cavities caused dramatic declines in the clutch size of infested Daphnia, and this predation effect could easily be confused with the effect of severe food limitation.