Comparative otolith morphology in two species of Salmo genus from Türkiye

Melek Özpiçak; Semra Saygın; Savaş Yılmaz

doi:10.12714/egejfas.41.1.02

TR EN

Türkiye’den Salmo cinsine ait iki türün karşılaştırmalı otolit morfolojisi

Öz

Bu çalışmada, Terme Çayı (Samsun) ve Çam Deresi (Artvin)’nde yaşayan Salmo coruhensis Turan, Kottelat & Engin, 2010 ve Salmo fahrettini Turan, Kalayci, Bektaş, Kaya & Bayçelebi, 2020 türlerinin sagittal otolit morfolojileri taramalı elektron mikroskobu görüntüleri ile tanımlanmıştır. Otolit şekli ve dış hatları ayrıca, şekil indeksleri, eliptik Fourier katsayıları ve dalgacık dönüşümü ile analiz edilmiştir. Çalışma materyali olarak toplamda 30 S. coruhensis sample ve 20 S. fahrettini örneği elde edilmiştir. Otolit şekli ve morfometrisindeki türler arası farklılıklar, temel bileşenler analizi, kanonik ayrım analizi ve çok değişkenli varyans analizi ile değerlendirilmiştir. Çalışılan iki salmonid türü hem morfometrik hem de şekil analizi yöntemleriyle ayırt edilmiştir. Bununla birlikte, dalgacık dönüşümünün tür ayrımında şekil indeksleri ve Fourier katsayılarından daha etkili olduğu ve genel sınıflandırma başarı oranının %80 olduğu bulunmuştur. Sonuçlarımız sakkular otolit morfolojisinin alabalık türlerinin farklılaşmasında ek bir tanısal karakter olabileceğini göstermiştir.

Anahtar Kelimeler

Comparative otolith morphology in two species of Salmo genus from Türkiye

Abstract

In this study, the morphology of the sagittal otolith of Salmo coruhensis Turan, Kottelat & Engin, 2010 and Salmo fahrettini Turan, Kalayci, Bektaş, Kaya & Bayçelebi, 2020 from Çam Stream (Artvin) and Terme Stream (Samsun) was described by images of scanning electron microscopy. Its shape and contour were also analyzed with shape indices, elliptic Fourier coefficients and wavelet transforms. As the study material, a total of 30 S. coruhensis sample and 20 S. fahrettini sample were obtained. Interspecies differences in otolith shape and morphometry were evaluated by principal components analysis, canonical discrimination analysis, and permutational multivariate analysis of variance. The two salmonid species studied were distinguished by both morphometric and shape analysis methods. However, wavelet transform was found to be more effective than shape indices and elliptic Fourier coefficients in species discrimination, with an overall classification success rate of 80%. Our results showed that saccular otolith morphology could be an additional diagnostic character for trout species differentiation.

Keywords

Ethical Statement

The care and use of experimental animals, sampling and analysis techniques used in this work are approved by Ondokuz Mayıs University Animal Experiments Local Ethics Committee with decree no “2017/38”

Thanks

The authors are thankful to Recep YILDIZ for sampling S. coruhensis individuals.

References

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Details

Primary Language

English

Subjects

Hydrobiology

Journal Section

Research Article

Authors

Melek Özpiçak ^*
0000-0003-3506-4242
Türkiye

Semra Saygın
0000-0002-3249-5074
Türkiye

Savaş Yılmaz
0000-0003-2859-4886
Türkiye

Early Pub Date

March 11, 2024

Publication Date

March 15, 2024

Submission Date

October 26, 2023

Acceptance Date

December 25, 2023

Published in Issue

Year 2024 Volume: 41 Number: 1

DOI

https://doi.org/10.12714/egejfas.41.1.02

IZ

https://izlik.org/JA37ZP75BZ

Cite

RIS / Bibtex

APA

Özpiçak, M., Saygın, S., & Yılmaz, S. (2024). Comparative otolith morphology in two species of Salmo genus from Türkiye. Ege Journal of Fisheries and Aquatic Sciences, 41(1), 8-15. https://doi.org/10.12714/egejfas.41.1.02

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