its the link from food odors and social odors (i.e., pheromones) that gives the dopamine hypothesis its credibility
Who’s fooling who about human pheromones, sexual attraction, and who you can trust?
…these authors know male morphology is not used by female goats for mate choice (e.g., they cite their own initial study in this regard). They also cite works that show female mammals are able to distinguish between and show preference for particular males using chemical cues alone.
The prenatal migration of GnRH neurosecretory neurons allow human pheromones to effect GnRH pulsatility, which modulates the concurrent maturation of the neuroendocrine, reproductive, and central nervous systems, thus influencing the development of human reproductive sexual behavior and other behavior.
The “rules” of the required molecular biology involve ligand-receptor binding. For example, from yeasts to mammals, genetic conservation of the ligand: gonadotropin releasing hormone (GnRH), and the diversification of its receptor (GnRHR) are part of the rules.
Most human sexuality researchers know enough about hormones and behavior to realize that the hormones involved in sexual responses are invariably associated with olfactory/pheromonal input, and never invariably associated with visual input — in any species.
Kudos to anyone else who helps to detail the cross-species comparisons from insects to humans.