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Evidence for the independent evolution of a rectal complex within the beetle superfamily Scarabaeoidea.
Arthropod Struct Dev
January 2025
Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE) - University of Padua, Viale dell'Università 16, 35020, Legnaro, Padua, Italy.
Rectal or cryptonephridial complexes have evolved repeatedly in arthropods, including in beetles where they occur in ∼190,000 species of Cucujiformia + Bostrichoidea, and Lepidoptera where they occur in ∼160,000 species. Sections of the Malpighian/renal tubules coat the outer surface of the rectum, acting as powerful recycling systems of the gut contents, recovering water and specific solutes. There are hints that a rectal complex evolved independently within another beetle group, Scarabaeoidea.
View Article and Find Full Text PDFMicrobiome composition and turnover in the face of complex lifecycles and bottlenecks: insights through the study of dung beetles.
Appl Environ Microbiol
December 2024
Department of Biology, Indiana University Bloomington, Bloomington, Indiana, USA.
Unlabelled: Microbiome composition and function often change throughout a host's life cycle, reflecting shifts in the ecological niche of the host. The mechanisms that establish these relationships are therefore important dimensions of host ecology and evolution; yet, their nature remains poorly understood. Here, we sought to investigate the microbial communities associated with the complex life cycle of the dung beetle and the relative contributions of host life stage, sex, and environment in determining microbiome assembly.
View Article and Find Full Text PDFFunctional analysis of dopa decarboxylase in the larval pupation and immunity of the diamondback moth, Plutella xylostella.
Pestic Biochem Physiol
December 2024
Collaborative Innovation Center for Modern Grain Circulation and Safety, College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing, Jiangsu 210023, China. Electronic address:
The diamondback moth (Plutella xylostella L.), a notorious pest infesting cruciferous vegetables worldwide, has developed a high level of resistance to various commonly used chemical pesticides. In this paper, we explore whether dopa decarboxylase (DDC), which is essential for survival and development in insects, could be used as a potential target for the control of P.
View Article and Find Full Text PDFE93 controls adult differentiation by repressing in .
Proc Natl Acad Sci U S A
December 2024
Institute of Evolutionary Biology, Spanish National Research Council (CSIC)-Universitat Pompeu Fabra, Barcelona 08003, Spain.
In , successful development relies on the precise coordination of both spatial and temporal regulatory axes. The temporal axis governs stage-specific identity and developmental transitions through a number of genes, collectively forming the . Among these, Ecdysone inducible protein 93F (E93) serves as the critical determinant for adult specification, but its mechanism of action remains unclear.
View Article and Find Full Text PDFThe Phylogeny of the Genera of Biting Midges (Diptera: Ceratopogonidae) of the World.
Zootaxa
April 2024
Research Associate of the American Museum of Natural History; 691-8th Ave. SE; Salmon Arm; British Columbia; V1E 2C2.
A phylogenetic analysis of all extant genera of Ceratopogonidae worldwide indicates there are now 109 valid genera, including two that are unnamed. All potential morphological features were considered, with 364 adult characters surveyed. Of these 146 adult characters were considered informative and these were combined with 40 pupal features previously interpreted by Borkent (2014), 16 larval and two egg characters.
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