Behavior shapes evolution

ScienceShot: Elephants Shaped Their Own Evolution by Elizabeth Norton on 26 June 2013, 1:00 PM

Excerpt: The finding suggests that the elephants tried out new feeding areas and new types of food, thus putting themselves in a position where natural selection would favor individuals with better-adapted teeth. By challenging the more passive view of natural selection—in which an environmental change simply favored elephants with stronger teeth—the study uses fossil evidence to show that the animals’ own behavior may have helped shape their evolutionary destiny.

My comment: Nutrient–dependent / pheromone–controlled adaptive evolution is exemplified in the context of ecological, social, neurogenic, and socio-cognitive niche construction, which is driven by the molecular mechanisms of epigenetic cause and effect (e.g., on the microRNA/messenger RNA balance). Changes in that balance lead to affects on behavior. Companion papers published last January discuss the mouse to human mammalian model in which a single nutrient-dependent amino acid change shows up in changes in teeth, skin, and hair in a population of modern humans that arose in what is now central China during the past ~30,000 years.

The nutrient-dependent changes in the teeth of elephants seem to have occurred over a much longer time. Perhaps their reproductive sexual behavior is not pheromone-controlled and their adaptive evolution occurred due to random mutations over millions of years, instead. However, there’s no model for that.

Kohl, JV (2013) Nutrient–dependent / pheromone–controlled adaptive evolution: a model
Socioaffective Neuroscience & Psychology, 3: 20553

About James V. Kohl 1308 Articles
James Vaughn Kohl was the first to accurately conceptualize human pheromones, and began presenting his findings to the scientific community in 1992. He continues to present to, and publish for, diverse scientific and lay audiences, while constantly monitoring the scientific presses for new information that is relevant to the development of his initial and ongoing conceptualization of human pheromones. Recently, Kohl integrated scientific evidence that pinpoints the evolved neurophysiological mechanism that links olfactory/pheromonal input to genes in hormone-secreting cells of tissue in a specific area of the brain that is primarily involved in the sensory integration of olfactory and visual input, and in the development of human sexual preferences. His award-winning 2007 article/book chapter on multisensory integration: The Mind’s Eyes: Human pheromones, neuroscience, and male sexual preferences followed an award winning 2001 publication: Human pheromones: integrating neuroendocrinology and ethology, which was coauthored by disinguished researchers from Vienna. Rarely do researchers win awards in multiple disciplines, but Kohl’s 2001 award was for neuroscience, and his 2007 “Reiss Theory” award was for social science. Kohl has worked as a medical laboratory scientist since 1974, and he has devoted more than twenty-five years to researching the relationship between the sense of smell and the development of human sexual preferences. Unlike many researchers who work with non-human subjects, medical laboratory scientists use the latest technology from many scientific disciplines to perform a variety of specialized diagnostic medical testing on people. James V. Kohl is certified with: * American Society for Clinical Pathology * American Medical Technologists James V. Kohl is a member of: * Society for Neuroscience * Society for Behavioral Neuroendocrinology * Association for Chemoreception Sciences * Society for the Scientific Study of Sexuality * International Society for Human Ethology * American Society for Clinical Laboratory Science * Mensa, the international high IQ society