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Updated: Jul 12, 2026

Electrophysiological Recording of The Central Nervous System Activity of Third-Instar Drosophila Melanogaster
Published on: November 21, 2018
N-beta-Alanyldopamine: Major Role in Insect Cuticle Tanning
Abstract:
N-beta-Alanyldopamine is the major tyrosine metabolite in the hemolymph and cuticle during pupal tanning in the tobacco hornworm, Manduca sexta L. Its concentration in hemolymph increases over 800-fold above larval levels by the start of tanning and decreases as the pupal cuticle darkens and hardens. It is a major catechol in species representing several insect orders and is the preferred substrate for pupal cuticular o-diphenol oxidase. In insects, N-beta-alanyldopamine appears to be the main precursor for tanning chemicals at certain developmental stages.
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