Abstract
Nestling blue titsParus caeruleus L. were given diets containing homogenized ladybirds, to assess the effects of their chemical defences. The 2spot, 10spot and water ladybirds produced no apparent toxic effects when small numbers were given at regular intervals.
The pine and kidney-spot ladybirds slightly inhibit growth and may be toxic to very young nestlings. The Water ladybird is extremely distasteful to this predator, despite its lack of toxicity. The results are discussed with reference to the proposed Müllerian and Batesian mimetic relationships between the ladybird species.
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Marples, N.M. Toxicity assays of ladybirds using natural predators. Chemoecology 4, 33–38 (1993). https://doi.org/10.1007/BF01245894
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DOI: https://doi.org/10.1007/BF01245894