
bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown
Published: Feb. 29, 2024
Abstract Rectal or cryptonephridial complexes have evolved repeatedly in arthropods, including beetles where they occur ∼190,000 species of Cucujiformia and Bostrichoidea, Lepidoptera ∼160,000 species. Sections the Malpighian/renal tubules coat outer surface rectum, acting as powerful recycling systems gut contents, recovering water specific solutes. There are hints that a rectal complex independently within another beetle group, Scarabaeoidea. Here we report our observations Scarabaeoidea, which support this view. We did not find related Staphylinoidea, Lucanidae, basal group observe Melolontha melolontha (Melolonthini), Pachnoda marginata Cetonia aurata (Cetoniinae), consistent with previous reports from these groups. Intriguingly found adult, but M. larvae, larvae adults Cetoniinae, indicating dramatic pupal remodelling organ systems. Insights into structure Scarabaeoidea compared well-studied Cucujiformia. Finally discuss possible functions future approaches to address question.
Language: Английский