Pattern recognition from microbes to man


Commensal bacteria play a role in mating preference of Drosophila melanogaster

Excerpt: “The major findings of this study are (i) diet-induced mating preference occurred in D. melanogaster after only one generation on different growth media and was maintained under these conditions for at least 37 generations, (ii) fly-associated commensal bacteria were responsible for the mating preference…”

Reported as: Bacteria Help Flies Select Mates

Excerpt: “A new study shows that bacteria that inhabit the flies help sway their choice of partners. The microbes might even lead to the creation of new species.”

Diversity and function of the avian gut microbiota

Excerpt:  “With a broader knowledge of avian hosts, we may be able to compare and contrast solutions of terrestrial vertebrate hosts to various physiological challenges, perhaps gaining insight into the evolution of the intestinal microbiota in a broader sense.”

My comment: Do gut microbes evolve?

The microbiota-gut-brain axis: neurobehavioral correlates, health and sociality

Excerpt: The phyla with the largest biomass (e.g., arthropods) are also those with more symbioses reported (McFall-Ngai, 2005). McFall-Ngai (2005) suggests that a crucial difference between vertebrates and invertebrates is based on the relationship between the immune system and its association with microbial life.

Response to my comment: References available to us suggest that microbial life has an important role as one of the mechanisms underlying the establishment of social relationships from insects to humans; in areas as important as kin recognition, mate selection and group-level identity.

Microbial genes, brain & behaviour – epigenetic regulation of the gut–brain axis

Excerpt: “The gut microbiota helps to break down certain nutrients, which subsequently can be further metabolized by host cells. Interestingly, several of these products are associated with neural function. As such, gut bacteria produce amino acids, such as GABA and tryptophan, and monoamines, such as serotonin, histamine and dopamine, that play important roles in the brain as neurotransmitters or their precursors…”

Individual diet has sex-dependent effects on vertebrate gut microbiota

Excerpt: “Finally, we show that the sex*diet interactions found here also occur in humans. Our results show that across four disparate vertebrate species, diet has a sex-specific effect on host gut microbiota.”

At the same time differences in Fragile X Syndrome have been attributed to one amino acid substitution “...findings indicate that sex differences in home range size and spatial abilities may still persist in humans living in urbanized Western societies, but are also influenced by environmental experience.

These findings are placed into the context of evolutionary theory.

There is no experimental evidence of biologically-based cause and effect that links any evolutionary event to sex differences or to similarities in morphological or behavioral phenotypes of species from microbes to man. The assumptions about adaptive functions cannot be placed into any model of epigenetic cause and effects on hormones that affect sex differences in cell types and behavior. Therefore, the conclusion from this open access paper represents nothing more than meaningless results that are meaningfully interpreted.

To conclude, the temporal as well as spatial home range experiences seem to be related to the acquisition and possession of spatial information. Consequently, a high extent of experience may positively affect the knowledge and cognitive representation of the individual’s home range.

Did anyone ever think that “…the knowledge and cognitive representation of the individual’s home range” is not experience-dependent, nutrient-dependent, and pheromone-controlled via the physiology of reproduction in the context of transgenerational epigenetic inheritance?

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