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Variability of Otolith Morphology and Morphometry in Eight Juvenile Fish Species in the Coastal Eastern Adriatic Cover

Variability of Otolith Morphology and Morphometry in Eight Juvenile Fish Species in the Coastal Eastern Adriatic

Open Access
|Oct 2018

Abstract

Sagittae otoliths of eight juvenile species: Boops boops, Diplodus vulgaris, Diplodus puntazzo, Sarpa salpa (family Sparidae), Liza ramada, Liza aurata (family Mugilidae), Atherina boyeri, Atherina hepsetus (family Atherinidae) were analysed and compared using descriptive morphological characters and morphometric indices. The noticeable differences among the otoliths of the investigated species are in their overall shape, margins (i.e. irregular, sinuate or crenate) and anterior region. Otolith shape varied from elliptic to pentagonal in sparids, elliptic to rectangular in mugilids and elliptic in two atherinids. Aspect ratio (OW/OL), ratio of the sulcus length occupied by the cauda length (CL/SL) and ratio of the sulcus length occupied by the ostium length (OSL/SL) were calculated for all species. The otolith contour was described using wavelets. The Canonical Analysis of Principal Coordinates (CAP) gave an overview of the otolith shape differentiation between eight juveniles. Using the Wavelet coefficients, the first principal component (CAP1) explained 58.1% of the variation among species and the second principal component (CAP2) 25.2%.

DOI: https://doi.org/10.2478/cjf-2018-0012 | Journal eISSN: 1848-0586 | Journal ISSN: 1330-061X
Language: English
Page range: 91 - 98
Submitted on: Jun 5, 2017
Accepted on: May 28, 2018
Published on: Oct 16, 2018
Published by: University of Zagreb, Faculty of Agriculture
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2018 Josipa Ferri, Karmen Bartulin, Frane Škeljo, published by University of Zagreb, Faculty of Agriculture
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.