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Strain‐specific Influence of Microcystis Aeruginosa on Food Ingestion and Assimilation of some Cladocerans and Copepods
Author(s) -
Henning Manfred,
Hertel Heino,
Wall Henry,
Kohl JohannesGünter
Publication year - 1991
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19910760105
Subject(s) - microcystis aeruginosa , ingestion , daphnia magna , biology , cladocera , toxicity , microbiology and biotechnology , cyanobacteria , food science , toxicology , zooplankton , chemistry , ecology , biochemistry , bacteria , genetics , organic chemistry
Ingestion rates where estimated for daphnids, Cyclops spp. and Bosmina (Eubosmina) coregoni thersites fed hepatotoxic and non‐toxic M. aeruginosa either separate or mixed with the readily available food alga Ankistrodesmus falcatus . The ingestion rates of hepatotoxic strains of M. aeruginosa are very low compared with those of A. falcatus or non‐toxic M. aeruginosa HUB 5‐3 fed to Daphnia magna or D. longispina . However, a close relationship between ingestion rate of different M. aeruginosa strains and their toxicity could not be observed. Addition of the toxic strain M. aeruginosa HUB 5‐2‐4 reduces the ingestion rates of A. falcatus progressively due to increased food rejection by D. magna . Additionally, the assimilation efficiency of M. aeruginosa HUB 5‐2‐4 is two times lower compared with A. falcatus and M. aeruginosa HUB 5‐3 leading to strong starvation.