Caterpillar Disease Paralysis

Left: Silkworm caterpillar, sham injected
Right: Silkworm caterpillar injected with bacteria
Photo: Ishii & Colleagues*

Caterpillars suffering from bacterial infections often stop moving and become lethargic. The paralytic proteins (cytokines) present in caterpillar hemolymph are involved. The same contractile paralysis that is initiated by paralytic proteins can be induced by injecting bacteria into the hemocoel of caterpillars. (Note the significant contraction in the photo) This has been…

Source: Living With Insects Blog

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