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Use of otolith morphology and morphometry for species discrimination of megrims Lepidorhombus spp. in the Central Eastern Adriatic Sea

Published online by Cambridge University Press:  19 August 2021

Nika Ugrin Open the ORCID record for Nika Ugrin [Opens in a new window] ,
Frane Škeljo ,
Josipa Ferri  and
Svjetlana Krstulović Šifner
Nika Ugrin*
Affiliation:
University of Split, University Department of Marine Studies, Ruđera Boškovića 37, PO Box 190, 21 000Split, Croatia
Frane Škeljo
Affiliation:
Falkland Islands Fisheries Department, Bypass Rd, PO Box 598, FIQQ 1ZZStanley, Falkland Islands
Josipa Ferri
Affiliation:
University of Split, University Department of Marine Studies, Ruđera Boškovića 37, PO Box 190, 21 000Split, Croatia
Svjetlana Krstulović Šifner
Affiliation:
University of Split, University Department of Marine Studies, Ruđera Boškovića 37, PO Box 190, 21 000Split, Croatia
*
Author for correspondence: Nika Ugrin, E-mail: nika.ugrin@gmail.com
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Abstract

Sagittal otolith morphology and otolith shape of two megrim species, Lepidorhombus boscii and Lepidorhombus whiffiagonis, were compared using descriptive morphological characters and Wavelet shape coefficients. Differences in otolith shape were examined by linear discriminant analysis (LDA). The first discriminant axis explained 66.6% of the variation between the groups, and the second axis 28.5%. Otolith classification based on LDA showed that in 79.5% of cases an otolith can be correctly classified based only on its shape. Relationships between otolith morphometric parameters (length and width) and fish size (total length) were described by fitting simple linear regression models. For L. boscii the highest positive correlation was found between right otolith width and total body length (R2 = 0.82), and for L. whiffiagonis between left otolith length and total body length (R2 = 0.39).

Keywords

Lepidorhombusmegrimsotolithshape
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 101 , Issue 4 , June 2021 , pp. 735 - 741
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press on behalf of Marine Biological Association of the United Kingdom

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