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Microorganisms colonize various regions of the human body, including the mouth, nasal passages, throat, stomach, intestines, urogenital tract, and skin. The total number of microbial cells is estimated to range from 10¹³ to 10¹⁴—comparable to, or exceeding, the number of human somatic cells. This host–microbiome relationship has led to the conceptualization of humans as supraorganisms, wherein microbial communities perform vital roles in development, immunity,...
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The gut–brain axis is a bidirectional communication system that connects the gastrointestinal tract and the brain. This interaction is mediated through multiple pathways, including the vagus nerve, hormonal signals, immune responses, and chemical messengers produced by gut microbes.Microbial Contributions to Brain FunctionGut microbiota contributes significantly to brain function by producing neuroactive compounds. These include neuroactive compounds that influence neurotransmitters such...
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Microbial communities, comprising bacteria, archaea, and eukaryotic microorganisms, inhabit diverse ecosystems and play crucial roles in environmental and biological processes. Their diversity is defined by three main parameters: species richness (the number of distinct species), species abundance (the relative quantity of each species), and species evenness (how uniformly individual species are distributed in various locations). These factors together shape the structure and ecological balance...
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Social behavior is a complex phenomenon that arises from the interaction between biological predispositions and environmental influences. This intricate interplay shapes how individuals think, feel, and act in various social contexts. Understanding these mechanisms requires insights from psychology, neuroscience, genetics, and evolutionary theory.Environmental Influences on Social BehaviorEnvironmental factors, including temperature, odors, and visual stimuli, play a crucial role in shaping...
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Microbial ecology examines the complex web of interactions and diversity among microorganisms within various ecosystems. This field seeks to understand how microbial populations adapt to and influence their environments and how these interactions shape broader ecological processes. Microbes are integral to ecosystem function, participating in nutrient cycling, energy flow, and the maintenance of environmental homeostasis.An ecosystem represents a dynamic interaction between living organisms...
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The gut microbiota includes trillions of microorganisms that colonize the human gastrointestinal tract, including bacteria, archaea, viruses, and fungi. This complex ecosystem plays a critical role in maintaining intestinal and systemic health. Most of these microbes inhabit the large intestine, establishing a relatively stable and diverse community that contributes to gut homeostasis through various metabolic, immunological, and protective mechanisms.Dominant bacterial phyla, such as...
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Behavioral Microbiomics: A Multi-Dimensional Approach to Microbial Influence on Behavior.

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Frontiers in Microbiology
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Summary
This summary is machine-generated.

Microbes significantly influence animal behavior, revealing complex host-microbe interactions within the holobiont. Understanding these relationships requires an ecological approach, integrating nutrition and behavior.

Keywords:
behaviorholobiontmicrobiomenutritionsymbiosis

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Area of Science:

  • Animal behavior
  • Microbiome research
  • Ecology

Background:

  • The role of microbes in animal life histories is increasingly recognized.
  • Emerging evidence highlights the broad impact of microbes on animal behavior.
  • Understanding host-microbe interactions necessitates an ecological perspective, considering the host, microbiome, and environment as a holobiont.

Purpose of the Study:

  • To explore the complex relationships between host-microbe interactions and animal behavior.
  • To integrate insights from host-parasite interactions and microbial community networks.
  • To introduce nutritional geometry as a framework for studying host-microbe-environment interactions.

Main Methods:

  • Literature review of host-parasite interactions.
  • Analysis of microbial community interaction networks.
  • Application of nutritional geometry to map host and microbial responses.

Main Results:

  • Host-microbe interactions profoundly influence animal behavior.
  • The environment, particularly nutrition, plays a central role in these interactions.
  • Nutritional geometry provides a framework to integrate host and microbial responses.

Conclusions:

  • A holistic, ecological view (holobiont) is crucial for understanding animal behavior.
  • Integrating host physiology, microbiome, and environment is key.
  • Nutritional geometry offers a powerful tool for studying these complex interdependencies.