no sex Have a smaller brain…

Evolution in action: what happens to the naked mole rat's brain if it is not a partner in the continuation of the lineage* What do female anchors look for in the songs of the males?

The strangest thing about a naked mole rat is not the lack of hair on their body or the fact that they live in underground dungeons, but the society they live in, a beehive-like society. These are the only mammals known today to live in this social model.
Up to 80% of colony members never reproduce. Instead, they dig trenches, protect the colony, take care of the cubs and collect food. The queen, the founder of the colony, is the only one who produces offspring.
Now new research shows that parts of these "working" brains, which never reproduce, are smaller than those of the queen and the males she mates with. One such area - which is mapped as being correlated with aggression, sex and social interactions - is 17% smaller among the "workers", the researchers report in the journal PNAS.
Go to the following URL to watch a 4-minute BBC video about the life of the naked mole rat.

direct readingThere is no doubt that there is truth in advertising, at least in the world of winged animals. Female birds judge males by the number of songs they can sing, as a new study shows.
The richer the song repertoire of the anchor male, the more physically fit this male is, the stronger his immune system and the more diverse his genes.
Since these important and advantageous traits are passed on in the genes to the offspring, the anchor females do the right thing when they listen to the advertisement (variety of songs) before choosing the appropriate male.