{"refrec":{"BRefID":218518,"RR":"<b>Sadighzadeh, Z.; Tuset, V.M.; Valinassab, T.; Dadpourd, M.R.; Lombarte, A.</b> (2012). Comparison of different otolith shape descriptors and morphometrics for the identification of closely related species of <i>Lutjanus</i> spp. from the Persian Gulf. <i>Mar. Biol. Res. 8(9)</i>: 802-814. <a href=\"http://dx.doi.org/10.1080/17451000.2012.692163\" target=\"_blank\">http://dx.doi.org/10.1080/17451000.2012.692163</a>","BEntID":210261,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Mar. Biol. Res. 8(9)</i>: 802-814. <a href=\"http://dx.doi.org/10.1080/17451000.2012.692163\" target=\"_blank\">http://dx.doi.org/10.1080/17451000.2012.692163</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Sadighzadeh, Z.; Tuset, V.M.; Valinassab, T.; Dadpourd, M.R.; Lombarte, A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Sadighzadeh, Z. <i>et al.</i>","Englishabstract":"The anatomical and morphometric (shape indices, contour descriptors and otolith weight) characterizations of sagittal otoliths were investigated in 11 species of Lutjanus spp. inhabiting the Persian Gulf. This is the first study that compares the efficiency of three different image analysis techniques for discriminating species based on the shape of the outer otolith contour, including elliptical Fourier descriptors (EFD), fast Fourier transform (FFT) and wavelet transform (WT). Sagittal otoliths of snappers are morphologically similar with some small specific variations. The use of otolith contour based on wavelets (WT) provided the best results in comparison with the two other methods based on Fourier descriptors, but only the combination of the all three methods (EFD, FFT and WT) was useful to obtain a robust classification of species. The species prediction improved when otolith weight was included. 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