Morphological Characterization of Lithognathus mormyrus (Linnaeus, 1758) Populations in the Southern Black Sea (Turkey)

IF 0.8 Q4 MARINE & FRESHWATER BIOLOGY Aquatic Sciences and Engineering Pub Date : 2021-12-29 DOI:10.26650/ase2021937864

U. Karadurmuş, M. Aydın

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Abstract

Morphological characteristics such as meristic counts and body shape have long been used in stock identification. Fifty striped seabream, Lithognathus mormyrus, individuals were sampled from the south Black Sea between January 2020 and November 2020. Morphometric characteristics were given as the percentage of total length (TL%). Species identification and shape differences between sexes of striped seabream were analyzed by different statistical methods. The biggest maximum length and weight values (TL=310 mm for TW=399.73 g) were found for the southern Black Sea in this study. The mean TL of female individuals (X=205.26 mm) was found higher than male individuals (X=199.10 mm). The TL% ratio of head length was found as 24.45% for all individuals. In this study, isometric growth (t=2.009, p>0.05) was determined for all individuals and the length-weight relationship (LWR) was found as W=0.013TL3.003 (r2=0.983). This study revealed that the morphological characteristics of L. mormyrus differ significantly between female and male individuals and the species may be a good example of sexual dimorphism.

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黑海南部（土耳其）毛颚石蛾（Linnaeus，1758）种群的形态特征

分生组织计数和体型等形态特征长期以来一直被用于股票识别。2020年1月至2020年11月期间，从黑海南部采集了50只条纹海龙，即毛纹海龙。形态计量学特征以总长度的百分比（TL%）表示。采用不同的统计方法分析了条纹鲷的种类鉴定和性别间的形态差异。在本研究中，发现黑海南部的最大长度和重量值（TL=310 mm，TW=399.73 g）最大。女性个体的平均TL（X=205.26 mm）高于男性个体（X=199.10 mm）。所有个体的头部长度的TL%比率为24.45%。本研究测定了所有个体的等长生长（t=2.009，p>0.05），发现长重关系为W=0.013TL3.003（r2=0.983）。

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