Copepods rule the earth

Basal Bodies of Copepod Mechanosensory Setae

Ciliary-based hair-like mechanoreceptors are found throughout the animal kingdom. For example, the well-studied vertebrate ciliary hair cell receptor features a prominent "kinocilium" with a 9 + 2 arrangement of microtubules, surrounded by non-ciliary hairs termed "stereocilia". Arthropod setal receptors are ciliary in origin and are characterized by microtubule-containing distal dendrites surrounded by a structure composed of actin fibers called the scolopale.

The copepod mechanosensory setae are characterized by a large number of microtubules, arranged in bridged rows, which extend far out into the setae and are well anchored at both the proximal and distal ends. Other associated structures contribute to the stiffness of the tube enclosing the dendrites, undoubtedly playing a part in the exquisite sensitivity of these sensors.

Here's a link to some of our references.


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