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otolith
(redirected from Otoliths)

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
otolith /oto·lith/ (o´to-lith) statolith.
o·to·lith (t-lth)
n.
1. Any of numerous minute calcareous particles found in the inner ear of certain lower vertebrates and in the statocysts of many invertebrates.
2. See otosteon.

oto·lithic adj.

otolith
[ō′təlith]
Etymology: Gk, ous, ear, lithos, stone
1 a calculus in the middle ear.
2 any of the crystals of calcium carbonate attached to the hair cells of the inner ear as gravity orientation receptors.

statolith [stat´o-lith]
1. a granule of the statoconia.
2. a solid or semisolid body occurring in the labyrinth of animals.

otolith
an earstone; concretions of calcium carbonate and protein in the labyrinth of the inner ear and which move with every change in the posture of the head. Called also statolith.


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When done correctly, using otoliths (ear bones that are produced in layers over time, like the rings in a tree's trunk) to determine the age of fishes is believed to be a generally reliable method, although age determinations based on otoliths do not always agree with aging studies based on other methods, such as counts of scale annuli.
Otolith growth rates of natural populations Using measurements of daily increment widths as a proxy for somatic growth rate, we relied on two assumptions: 1) that growth increments in the form of ring formations in otoliths occurs daily, and 2) the increment widths of otoliths are proportional to somatic growth (i.
Considered a fundamental bodily structure in fish, otoliths serve a vital function in fish by helping them sense orientation and acceleration.
 
 
 
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