Tag: Biological Sciences

Viral clockworks: How do coronaviruses spill over?

Composition in rectangular format. Deep yellow background, an orange virus occupies half of the picture. The virus has white hands and feet and stands on a black clock with white details.

Coronaviruses are widespread in mammals and birds and sometimes they jump species, as SARS-CoV-2 from bats to humans. This investigation describes the genomic events during Avian coronavirus passages from hamster cells to primate cells in order to understand the mechanisms of coronavirus adaptation to a new host. Read More →

Coronavirus Sars-Cov-2 responsible for the COVID-19 pandemic is a specialist in infecting humans

ACE2 is the protein used by new coronavirus (SARS-CoV-2) to enter the host-cells. Our comparative analysis with 70 mammals revealed a relatively high diversity of ACE2 between these species, but no polymorphism within human populations, at least considering 30 sites located at the ACE2 binding sites to the SARS-CoV-2. SARS-CoV-2 can infect any human from any population, but it is unable to infect, naturally and easily, other mammals, including pets. Read More →

Meteorological Tsunamis: should we worry about them?

Have you ever heard about meteorological tsunamis? Why it should be important to better understand these natural phenomena? Dr. Iael Perez and Dr. Dragani Walter from the Servicio de Hidrografia – CONICET, Argentina, explain these phenomena in detail after investing on an interesting study conducted in Mar del Plata. Read More →

Biofouling successional processes

To assess the successional pattern of fouling organisms we tested the hypothesis that depth, light intensity and predation influences the trajectory of the fouling community. The results suggest that each physical factor or biological process can change the successional trajectory, and the respective model (e.g., convergent, divergent, parallel, or cyclic) depends on the magnitudes of the determinants that act on the community at each stage of its trajectory. Read More →