Publications by authors named "Joao M Moreno"
Article Synopsis
- Portugal has a lot of different plants and animals because of its unique geography and history, but these species are in danger from things like climate change and over-exploitation.
- Researchers in Portugal are working together through a project called Biogenome Portugal to study and document biodiversity, which means looking closely at the genes of different species.
- The goal is to create a library of genetic information to help protect endangered species and promote conservation efforts in Portugal, especially for unique plants and animals found only there.
Article Synopsis
- - The study investigates the molecular evolution of circadian clock genes in four Squalius fish species from different climatic regions in Western Iberia, focusing on how environmental conditions like light and temperature influence these genes.
- - Researchers identified 16 core circadian genes and found evidence of positive selection in 12 of them, particularly in the cry and per genes that are part of the negative feedback loop, especially in southern populations experiencing Mediterranean climate conditions.
- - The findings suggest that changes due to positive selection can affect the proteins' thermostability, indicated by alterations in their aliphatic index and isoelectric point, and show evolutionary clustering among fish in similar environments despite being in different genetic clades.
Current knowledge on the biological responses of freshwater fish under projected scenarios of climate change remains limited. Here, we examine differences in the protein configuration of two endemic Iberian freshwater fish species, Squalius carolitertii and the critically endangered S. torgalensis that inhabit in the Atlantic-type northern and in the Mediterranean-type southwestern regions, respectively.
View Article and Find Full Text PDFThe testicular toxicity of polychlorinated biphenyls (PCBs) has been extensively studied. However, the detailed mechanism is still obscure. In the present study, male C57 mice were treated with different doses of Aroclor 1254 (a commercial PCB mixture) once every 3 days by oral gavage.
View Article and Find Full Text PDF