Sublethal effects of oxalic acid on Apis mellifera
are hardly investigated. However, permanent damages
of the digestive organs of adult workers are described.
This can influence the nutrient supply and
the feeding behaviour of the bee. In cage-experiments
the food ingestion of A. mellifera after a treatment
with oxalic acid was investigated ... 

The treatment with 3.5% OA
resulted in sublethal effects on A. mellifera: reduced
food ingestion and vitality. The less requirement of
food can indcate changes in the metabolism which
are also reflected in the low activity. It has to be
investigated in further studies whether these results are
caused by organ damages or other effects like dehydration
or symptoms of poisoning.


Sublethal effects of oxalic acid on Apis
mellifera: changes in food ingestion. S. Schneider,
E. Rademacher (Freie Universität Berlin, Institut für
Biologie, Neurobiologie, Königin-Luise-Straße 28/
30, 14195 Berlin)

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