Archivo del Autor: vicioso

EL CAMBIO CLIMÁTICO REDUCE EL HÁBITAT DE LAS ESPECIES ALPINAS

El calentamiento global está restringiendo el hábitat de las especies alpinas, que cada vez deben vivir a mayor altura.

https://buff.ly/2QkZFY6

Global warming pushing alpine species higher and higher — ScienceDaily: For every one-degree-Celsius increase in temperature, mountaintop species shift upslope 100 meters, shrinking their inhabited area and resulting in dramatic population declines, new research by zoologists has found. (Read more…)

IDENTIDAD SEXUAL Y SISTEMA INMUNE

Ciertas células inmunes parecen jugar un papel determinante en la determinación sexual del cerebro y, posiblemente, en la orientación sexual.

https://buff.ly/2MlcMFu

Immune Cells Play Key Role in Determining Male or Female Characteristics in Developing Brain – Neuroscience News: A new study reports mast cells play a key role in determining sex differences in the developing brain.

EL DESTINO DE LOS INSECTOS SOCIALES DEPENDE DE UN ÚNICO GEN

Un único gen parece determinar si un insecto social será reina u obrera.

https://buff.ly/2NWgA1z

A study of ants provides information on the evolution of social insects: One gene in particular determines whether an ant becomes queen or worker — ScienceDaily: One of the great puzzles of evolutional biology is what induced certain living creatures to abandon solitary existence (Read more…)