The ability of science writers to misrepresent what is known about cause and effect by biologists and attribute emotion to song in birds, visual input in some species, tactile input in others, and pheromones in insects defies common sense.
It’s been more than 2 decades since the work of Axel and Buck replaced the ridiculous misrepresentations of those who appear to have never once thought about olfaction for finding food in birds.
a molecule similar to GnRH is essential to nutrient chemical-dependent and pheromone-controlled reproduction in all species, including C. elegans.
What the honeybee queen eats determines her pheromone production. Her pheromones determine everything else about the social interactions of the colony including the neuroanatomy of the worker bees’ brains.
Nutrient chemicals cause ecological niches to form that enable interactions among the conspecifics of social niches. Nutrition and pheromones are both required for epigenetic effects on development of a neurogenic niche in the honeybee brain and a hypothalamic neurogenic niche in the mammalian brain.
1) ecology and the nutrient chemical-dependent evolution of ecological niches;
2) social interactions and the pheromone-dependent evolution of social niches.