Daphnia  Pre‐Exposed to Toxic  Microcystis  Exhibit Feeding Selectivity | Zendy

Tillmanns Angeline R. | Zendy; Burton Sara K. | Zendy; Pick Frances R. | Zendy

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Daphnia Pre‐Exposed to Toxic Microcystis Exhibit Feeding Selectivity

Author(s) -

Tillmanns Angeline R.,

Burton Sara K.,

Pick Frances R.

Publication year - 2011

Publication title -

international review of hydrobiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.524

H-Index - 52

eISSN - 1522-2632

pISSN - 1434-2944

DOI - 10.1002/iroh.201011298

Subject(s) - daphnia , cyanobacteria , microcystis aeruginosa , microcystis , biology , chlorella , strain (injury) , botany , dominance (genetics) , microcystin , algae , microbiology and biotechnology , ecology , crustacean , bacteria , biochemistry , anatomy , genetics , gene

In this study, short term feeding experiments were used to determine if Daphnia , pre‐exposed to cyanobacteria, could avoid cyanobacteria through feeding selectively. The results show that Daphnia ambigua were capable of altering the proportion of a single – celled cyanobacterium ( Microcystis aeruginosa ) to a chlorophyte ( Chlorella kessleri ) of similar size and shape. Also, D. ambigua pre‐exposed for eight weeks to a toxic strain of M. aeruginosa were more successful at avoiding this strain than D. ambigua pre‐exposed to C. kessleri or to a non‐toxic strain of M. aeruginosa . These experimental results suggest that further investigations of Daphnia 's ability to influence the dominance of cyanobacterial strains in lakes are warranted. (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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