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Pyrrolizidine alkaloids (PAs) are known to protect Arctiidae moths and Danainae and Ithomiinae butterflies against the orb-weaving spider Nephila clavipes (Araneae, Araneidae, Tetragnathinae), which liberates adults of these insects unharmed from its web. We tested against this spider the role of...
Foraging on a variety of different food items allows individuals to balance nutrient intake, but it also may dilute toxins present in single items of the diet. The distinction between nutrient balancing and toxin dilution becomes less clear, however, for organisms that sequester potentially toxic...