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dc.contributor.authorLychakov, D.V.-
dc.contributor.authorRebane, Y.T.-
dc.contributor.authorLombarte, Antoni-
dc.contributor.authorFuiman, L.A.-
dc.contributor.authorTakabayashi, A.-
dc.date.accessioned2010-03-10T15:37:10Z-
dc.date.available2010-03-10T15:37:10Z-
dc.date.issued2006-09-
dc.identifier.citationHearing Research 219(1-2): 1–11 (2006)en_US
dc.identifier.issn0378-5955-
dc.identifier.urihttp://hdl.handle.net/10261/22227-
dc.description11 pages, 8 figures, 1 tableen_US
dc.description.abstractMathematical modeling suggests that relatively large values of otolith mass asymmetry in fishes can alter acoustic functionality and may be responsible for abnormal fish behavior when subjected to weightlessness during parabolic or space flight [D.V. Lychakov, Y.T. Rebane, Otolith mass asymmetry in 18 species of fish and pigeon, J. Grav. Physiol. 11 (3) (2004) 17–34; D.V. Lychakov, Y.T. Rebane, Fish otolith mass asymmetry: morphometry and influence on acoustic functionality, Hear. Res. 201 (2005) 55–69]. The results of morphometric studies of otolith mass asymmetry suppose that the absolute value and the sign of the otolith mass asymmetry can change many times during the growth of individual fish within the range ±20% [D.V. Lychakov, Y.T. Rebane, Otolith mass asymmetry in 18 species of fish and pigeon, J. Grav. Physiol. 11 (3) (2004) 17–34; D.V. Lychakov, Y.T. Rebane, Fish otolith mass asymmetry: morphometry and influence on acoustic functionality, Hear. Res. 201 (2005) 55–69]. This implies that the adverse effects of otolith asymmetry on acoustic and vestibular functionality could change during the lifetime of an individual fish. The aims of the present article were to examine the nature of otolith mass asymmetry fluctuation and to quantify otolith mass asymmetry in a large number of teleost fishes to verify our previous measurements. A dimensionless measure of otolith mass asymmetry, χ, was calculated as the difference between the masses of the right and left paired otoliths divided by average otolith mass. Saccular otolith mass asymmetry was studied in 59 Mediterranean teleost species (395 otolith pairs), 14 Black Sea teleost species (42 otolith pairs), red drum (196 otolith pairs) and guppy (30 otolith pairs). Utricular otolith mass asymmetry was studied in carp (103 otolith pairs) and goldfish (45 otolith pairs). In accordance with our previous results the value of χ did not depend on fish size (length or mass), systematic or ecological position of the fish, or otolith growth rate. In the great majority of the fishes studied, the saccular otolith χ was small |χ| < 0.05 (or <5%). Mathematical modeling indicates that values of χ vary among individual fish, but that the value is probably stable during a fish’s lifetime.en_US
dc.description.sponsorshipThis work was partly supported by Russian RFFI 05-04-48303 Grant, Russian St. Petersburg Scientific Center 03.02 Program, Contribution 1406 of The University of Texas Marine Science Institute.en_US
dc.format.extent22195 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsclosedAccessen_US
dc.subjectFishen_US
dc.subjectSacculusen_US
dc.subjectUtriculusen_US
dc.subjectOtolith asymmetryen_US
dc.subjectMathematical modelingen_US
dc.titleFish otolith asymmetry: Morphometry and modelingen_US
dc.typeartículoen_US
dc.identifier.doihttp://dx.doi.org/10.1016/j.heares.2006.03.019-
dc.description.peerreviewedPeer revieweden_US
dc.relation.publisherversionhttps://doi.org/10.1016/j.heares.2006.03.019en_US
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