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Sex-linked variations in the sagittal otolith biometry of Nemipterus randalli (Russell, 1986) from the eastern Mediterranean Sea    
Yazarlar
Doç. Dr. Ramazan YAZICI Doç. Dr. Ramazan YAZICI
Kırşehir Ahi Evran Üniversitesi
Özet
Few studies have been conducted on the sagittal otolith shape and morphometry of Nemipterus randalli, and none of these studies has examined the effect of sexual dimorphism on the otolith morphology of this species, therefore this study aimed to contribute to knowledge about the otolith morphology of N. randalli, an invasive fish species for the Mediterranean Sea. For this purpose, a total of 132 samples (51 female and 81 male) were obtained from Iskenderun Bay with the help of commercial fishermen in November 2018. Relationships between otolith measurements and fish size were determined. Shape indices and elliptic Fourier coefficients were calculated. Significant differences were detected between males and females in all analysis. The sexes were separated from each other using both shape indices and elliptic Fourier coefficients. However, shape analysis was more effective in distinguishing sexes than traditional morphometric analysis. Asymmetry in the otolith morphology of sexes has been attributed to differences in the growth and sexual maturity of male and female fish. The results of this study indicated that sexual dimorphism in Nemipterus randalli was also reflected in the otolith morphology.
Anahtar Kelimeler
Fourier analysis | invasive species | otolith shape | sexual dimorphism | İskenderun bay
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı JOURNAL OF FISH BIOLOGY
Dergi ISSN 0022-1112
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 01-2023
Cilt No 102
Sayı 1
Sayfalar 241 / 247
Doi Numarası 10.1111/jfb.15256