Pheromones and first impressions
Posted on April 16, 2013 by James Kohl.
Excerpt: Our work suggests that it could be the first impression—the first whiff of odor—that determines the ability of an insect to recognize that odor mixture.”
Article [subscription required]: Early quality assessment lessens pheromone specificity in a moth
Abstract excerpt: “Generalization may also be important in responses to general odorants, as circuits underlying these display vast sensitivity differences, complex interactions, and temporal intricacies.”
My comment: The findings on pheromones reported here extend well across species because the molecular mechanisms of chemical communication are conserved. See for example: Nutrient-dependent / Pheromone-controlled Adaptive Evolution and Nutrient-dependent / Pheromone-controlled thermodynamics and thermoregulation.
Also, a recently published review Physiology is rocking the foundations of evolutionary biology helps to eliminate any further consideration of the Modern Evolutionary Synthesis (Neo-Darwinism). For example, “We now know that genetic change is far from random and often not gradual.” In my model, we can see that non-random nutrient-dependent amino acid substitutions are the ‘movers and shakers’ of adaptive evolution via their link from changes in the microRNA / messenger RNA balance and de novo protein biosynthesis to species-specific pheromones, which are the metabolites of nutrients that control reproduction.
For comparison to my model we have only the suggestion that predation in moths caused adaptive evolution for color changes (See for review: The peppered moth and industrial melanism: evolution of a natural selection case study.) Many theorists accepted the first impression given by the study of the peppered moth, and they have continued to cling to mutations theory (mutations caused by industrial pollution), despite all evidence that vertebrate and invertebrate adaptive evolution is nutrient-dependent and pheromone-controlled. See for review: Human pheromones and food odors: epigenetic influences on the socioaffective nature of evolved behaviors.
Retired medical laboratory scientist
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