Tuesday, September 28

mamiferos

Animales, caries, fósiles dentales, hallazgos, mamiferos, Noticias, primates, Tendencias

This reveals the oldest cavities found in a mammal | Digital Trends Spanish

Analysis of dental fossils of the primate species Microsyops latidens, dating to about 54 million years ago, show the first evidence of dental caries in mammals. The study was published in the journal Scientific Reports and shows cavities, probably caused by a diet generous in fruits or other foods high in sugar. The remains of this species have been studied for several years. Before, small holes had been detected in the teeth, which were thought to be due to physical damage that occurred before the disappearance of the mammal. "These fossils have been around for 54 million years and a lot can happen in that time," explains Keegan Selig, lead author of the study. Keegan Selig"I think most people assumed that these holes were some kind of damage that occurred over time, but they always ...
alimentos, Animales, ciudades, mamiferos, Noticias, Tendencias, urbanización

Mammals are bigger as a result of cities | Digital Trends Spanish

New research shows that urbanization is causing many species of mammals to increase in size, likely due to the availability of food in crowded places. Researchers at the Florida Museum of Natural History discovered an unexpected pattern after analyzing nearly 140,000 measurements of body length and mass from more than 100 species of mammals that inhabit North America over 80 years. According to the results of the study, the mammals that live in the city are longer and larger than those that live in the countryside. "In theory, animals in cities should get smaller and smaller due to the effects of the heat island, but we have not found evidence that this occurs in mammals," explains lead study author Maggie Hantak, a researcher. from the Florida Museum. "This work is a good argument for ...