otolith


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statolith

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

otolith

(ō′tə-lĭth′)
n.
One of the small calcareous particles found in the inner ear of many vertebrates, especially fishes, which are involved in determining body orientation and sometimes in perceiving sound.

o′to·lith′ic adj.

otolith

(1) An auditory ossicle. 
(2) A larger calcified concrement within the ear.
(3) A minute calcium carbonate granule located near the sensory hair cell in the inner ear; statolith.

otolith

One of the many tiny calcareous particles found in the utricle and sacculus of the inner ear. These move under gravitational and accelerative forces causing stimulation of hair cells and the production of nerve impulses that provide the brain with information about the position and movement of the head.

otolith

or

otoconium

a granule of calcareous material, several of which occur in the inner ear of vertebrates, where they are attached to processes associated with sensitive cells, and register gravity By means of such sense organs, vertebrates are able to assess their position with respect to gravity.
References in periodicals archive ?
Lapilli otoliths were ground to expose the core via disc grinder along the transverse plane and subsequently polished with 1000 and 2000 grit silicon carbide sandpaper to achieve a smooth surface.
Therefore, this study was conducted to evaluate the relationship between otolith weight and observed age (calculated by reading annuli on sectioned otoliths) in the stocks of S.
Ages determined from the use of otoliths and scales collected from river herring were compared to quantify aging bias and precision.
To quantify otolith [.sup.87]Sr/[.sup.86]Sr, we used a NuPlasma MC-ICPMS and Photon Machines Analyte G2 laser.
A total of 13 body landmarks and semi-landmarks, and 20 otolith landmarks and semi-landmarks were used in our analysis (Fig.
2014: Comparison of scale and otolith age readings for trahira, Hoplias malabaricus (Bloch, 1794), from Parana' River, Argentina.
Sagittal otolith shape used in the identification of fishes of the genus Serranus.
We are grateful to many staff and colleague for their help, particularly Russell Svec (MFM) for his interest, Zac Espinoza (MFM) for otolith collections and Greg Bargmann (WDFW), for providing Puget Sound otolith samples.
The Arrow Goby had a significantly longer larval duration ([F.sub.1,705] = 227.3, p < 0.0001), larger otolith radius at settlement ([F.sub.1,705] = 28.4, p < 0.0001), and slower larval growth rates ([F.sub.1,705] =399.8, p < 0.0001) than the Tidewater Goby (Table 1).
The inner ear consists of three pairs of chambers, each containing an otolith. The otolith called lapilli occupies the utricular vestibule, the sagittae occupies the saccular and the asterisci the lagenar vestibule (Secor et al., 1991; Gomiero and Braga, 2007).