Doğdu Servet Ahmet
Vocational School of Maritime Technologies, Underwater Technologies, Iskenderun Technical University, Iskenderun, Hatay, Turkey.
PeerJ. 2025 Jun 19;13:e19594. doi: 10.7717/peerj.19594. eCollection 2025.
This study aimed to status of the Iskenderun population of , an important fish species in the Mediterranean Sea ecosystem, by providing detailed data on its genetic structure using mtDNA COI gene region and biological parameters as length-weight relationship, age-growth characteristics, von Bertalanffy growth parameters. A total of 325 specimens were studied from Iskenderun Bay in the eastern Mediterranean (Türkiye), ranging in length from 16.7 to 43.5 cm. For genetic studies using the mtDNA COI gene region, 30 samples were selected from different size groups representing the population. Age 2 represented the majority of the population (31.69%). The value of "b" of the length-weight relationship was higher than "3" (3.0839). The results for the von Bertalanffy growth parameters were observed as = 125.8 cm; = 0.0570 year -1; = - 2.2410 year. Fulton's condition factor was observed as 1.4120. The growth performance index was calculated as 4.35. The genetic diversity of the population was found to be 0.0332 ± 0.0028. Sixteen haplotypes were observed in the population and haplotype diversity was calculated as 0.9379. Tajima's neutrality test (-0.9437), Fu's Fs Statistic (-0.0340), Strobeck's S Statistic (0.6620), Achaz's Y test (-1.8728), Fu and Li D (1.1570) and F Test (0.4444) were applied to test whether the population is in balance. In conclusion, the biological and genetic analyses carried out within the scope of our study revealed that the Iskenderun population of is in stable condition.
本研究旨在通过使用线粒体DNA细胞色素氧化酶亚基I（mtDNA COI）基因区域提供关于其遗传结构的详细数据，以及诸如体长-体重关系、年龄-生长特征、冯·贝塔朗菲生长参数等生物学参数，来评估地中海生态系统中一种重要鱼类——伊斯肯德伦种群的状况。总共对来自地中海东部（土耳其）伊斯肯德伦湾的325个样本进行了研究，体长范围为16.7至43.5厘米。对于使用mtDNA COI基因区域的遗传研究，从代表该种群的不同大小组中选择了30个样本。2岁的个体占种群的大多数（31.69%）。体长-体重关系的“b”值高于“3”（3.0839）。冯·贝塔朗菲生长参数的结果观察为L∞ = 125.8厘米；K = 0.0570年-1；t0 = - 2.2410年。富尔顿体况因子观察为1.4120。生长性能指数计算为4.35。该种群的遗传多样性为0.0332 ± 0.0028。在种群中观察到16种单倍型，单倍型多样性计算为0.9379。应用了 Tajima 中性检验（-0.9437）、Fu's Fs 统计量（-0.0340）、Strobeck's S 统计量（0.6620）、Achaz's Y 检验（-1.8728）、Fu 和 Li D（1.1570）以及 F 检验（0.4444）来检验该种群是否处于平衡状态。总之，在我们的研究范围内进行的生物学和遗传分析表明，伊斯肯德伦种群处于稳定状态。
