Trichobothria

Sensory hairs on arthropods

Trichobothria are specialized sensory hairs found on the bodies of various arthropods, including insects and arachnids. These structures are highly sensitive to air currents and vibrations, allowing the organism to detect changes in its environment.

Structure

Trichobothria are typically long, thin hairs that protrude from the exoskeleton of the arthropod. They are connected to a socket that allows them to move freely in response to external stimuli. The base of each trichobothrium is innervated by sensory neurons, which transmit information to the central nervous system.

Function

The primary function of trichobothria is to detect air movements and vibrations. This capability is crucial for the survival of many arthropods, as it helps them sense the approach of predators or prey. In spiders, for example, trichobothria can detect the wing beats of flying insects, allowing the spider to accurately locate and capture its prey.

Distribution

Trichobothria are found on various parts of the body, depending on the species. In spiders, they are often located on the legs, while in insects, they may be found on the antennae or other appendages. The number and arrangement of trichobothria can vary significantly between species, reflecting adaptations to different ecological niches.

Research

Studies on trichobothria have provided insights into the sensory capabilities of arthropods. Researchers have used high-speed cameras and other technologies to observe how these hairs respond to different stimuli. Understanding the mechanics of trichobothria can also inform the design of sensitive detection devices in robotics and engineering.

Gallery

Tarsal trichobothria of Paratropis tuxtlensis

Related pages

• Sensory system
• Arthropod
• Spider anatomy

References

• Barth, F. G. (2002). A Spider's World: Senses and Behavior. Springer.
• Foelix, R. F. (2011). Biology of Spiders. Oxford University Press.

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