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Tracing the Origin, Spread, and Molecular Evolution of Dengue Type 1 Cases That Occurred in Northern Italy in 2023.
Pathogens
December 2024
Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy.
The dengue virus (DENV) is a mosquito-borne flavivirus endemic to many tropical and subtropical regions. Over the past few decades, the global incidence of dengue has risen dramatically, with the virus now present in over 100 countries, putting nearly half of the world's population at risk. This increase is attributed to several factors, including urbanization, climate change, and global travel, which facilitate the spread of both the virus and its mosquito vectors.
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- The study investigates the role of Demodex mites in the development of eyelid papillomas, focusing on how their presence may influence the tumor's histomorphological characteristics.
- Histomorphological examinations revealed demodectic infection indicators, such as cystic formations and remnants of the mite, in nearly half of the analyzed cases, found within tumor tissues and surrounding structures.
- The findings suggest that these cavity defects created by mite activity may serve as indicators of Demodex infestation, with implications for understanding their impact on various eyelid tumors, including keratoacanthomas and senile keratosis.
Putting the puzzle together: the relationship between floral characters and pollinator morphology determines pollination mode in the fig-fig wasp mutualism.
Plant Biol (Stuttg)
December 2024
Laboratorio de Ecología y Sistemática Vegetal, Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Morelia, Michoacán, Mexico.
The diversification of angiosperms has largely been attributed to adaptive radiation of their pollination and mating systems, which are relevant drivers of the macroevolution processes. The fig (Ficus, Moraceae) and fig wasp (Agaonidae, Hymenoptera) interaction is an example of obligate mutualism. Passive and active pollination modes have been associated with morphological traits in both partners.
View Article and Find Full Text PDFThe Cambrian and the colonization of nektonic suspension-feeding niches by early mandibulates.
Proc Biol Sci
August 2024
Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario M5S 3B2, Canada.
The diversity of cephalic morphologies in mandibulates (myriapods and pancrustaceans) was key to their evolutionary success. A group of Cambrian bivalved arthropods called hymenocarines exhibit diagnostic mandibulate traits that illustrate this diversity, but many forms are still poorly known. These include the odaraiids, typified by from the Burgess Shale (Wuliuan), characterized by its unique tubular carapace and rudder-like tail fan, and one of the largest Cambrian euarthropods at nearly 20 cm in length.
View Article and Find Full Text PDFInducible defense phytohormones in annual bluegrass (Poa annua) and creeping bentgrass (Agrostis stolonifera) in response to annual bluegrass weevil (Listronotus maculicollis) infestation.
J Econ Entomol
October 2024
Department of Entomology, Pennsylvania State University, University Park, PA, USA.
The annual bluegrass weevil (Listronotus maculicollis) is the most damaging insect pest of short-mown turfgrass on golf courses in eastern North America. Listronotus maculicollis larvae cause limited visible damage as stem-borers (L1-3), compared to the crown-feeding (L4-5) developmental instars. Prolonged larval feeding results in discoloration and formation of irregular patches of dead turf, exposing soil on high-value playing surfaces (fairways, collars, tee boxes, and putting greens).
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