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Related Concept Videos

Communication01:03

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Communication between two animals occurs when one animal transmits an information signal that causes a change in the animal that receives the information. Organisms communicate with one another in a host of different ways. Signals can be auditory, chemical, visual, tactile, or a combination of these. Communication is a critical behavioral adaptation that promotes survival, growth, and reproduction.
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Humans detect odors with the help of specialized cells located in the upper part of the nasal cavity, called olfactory receptor neurons (ORNs). ORNs possess hair-like structures called cilia, which are receptive to sensations from the inhaled air. When an odorant molecule binds to a specific receptor on the cell of the cilia, it leads to a series of events that ultimately cause the ORN to send electrical signals to the olfactory bulb in the brain through the olfactory nerves.
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The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
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The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
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Insect olfactory communication in a complex and changing world.

Michel Renou1, Sylvia Anton2

  • 1Institut d'Ecologie et des Sciences de l'Environnement de Paris (iEES-Paris). INRAE, Sorbonne Université, CNRS, IRD, UPEC, Univ. P7. Versailles, France.

Current Opinion in Insect Science
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Summary
This summary is machine-generated.

Insects use their olfactory system to detect specific smells amidst background noise, improving their ability to find odor sources. Environmental changes, however, disrupt this crucial insect communication.

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Area of Science:

  • Neuroscience
  • Sensory Biology
  • Ecology

Background:

  • Insect olfactory communication is vital for survival and reproduction.
  • It occurs within a complex sensory environment, requiring sophisticated processing.
  • Understanding this process is key to understanding insect behavior and ecosystem function.

Purpose of the Study:

  • To review recent advances in how insect olfactory systems process sensory information.
  • To explore the integration of olfactory and other sensory inputs for odor localization.
  • To discuss the impact of environmental changes on insect olfaction.

Main Methods:

  • Review of recent scientific literature on insect olfaction.
  • Analysis of mechanisms in olfactory mixture processing and multi-modal integration.
  • Examination of sensory processing plasticity and neural coding.

Main Results:

  • The insect olfactory system can extract specific odor information from background noise.
  • Integration of sensory information enhances odor source localization.
  • Advances in understanding neural coding and molecular mechanisms reveal insect adaptability.

Conclusions:

  • Insect olfactory systems demonstrate remarkable adaptability to changing environments.
  • Anthropogenic environmental perturbations interfere with insect olfactory communication.
  • This interference can significantly alter ecosystem and agroecosystem functioning.