Differentiation of Arctic Charr Salvelinus alpinus Complex (Salmonidae) in Lakes Lama and Kapchuk (Taimyr) Based on Genetic Analysis, External Morphology, and Otolith Shape

Павлов, Д. А.; Osinov, A. G.

doi:10.1134/s0032945223010101

Cited by 3 publications

(1 citation statement)

References 57 publications

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“…The results of the elliptic Fourier analysis demonstrates that sagittal otoliths of S. coruhensis and S. fahrettini can be described with limited numbers of harmonics (total of 8 harmonics explain 99.99% of the cumulative Fourier power). Especially in the recent studies, Fourier and wavelet analyzes are mostly preferred to examine the otolith shape in different fish species (Bourehail et al, 2015;Libungan et al, 2015;Pavlov, 2022;Pavlov and Osinov, 2023). Morat et al (2008) compared the morphological and chemical characteristics of otoliths of S. trutta and Salvelinus fontinalis with elliptic Fourier analysis and shape indices.…”

Section: Discussionmentioning

confidence: 99%

Comparative otolith morphology in two species of Salmo genus from Türkiye

Özpiçak,

Saygın,

Yılmaz

2024

EgeJFAS

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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.

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Section: Discussionmentioning

confidence: 99%

Comparative otolith morphology in two species of Salmo genus from Türkiye

Özpiçak,

Saygın,

Yılmaz

2024

EgeJFAS

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Multiple secondary contacts and historic hybridization between glacial lineages of charr (Salvelinus, Salmonidae) in northeastern Asia

Bondar,

Oleinik,

Kukhlevsky

et al. 2024

Ecology of Freshwater Fish

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Arctic regions of northeastern Asia represent areas of secondary contact of the glacial phylogenetic lineages of charrs belonging to the genus Salvelinus (Salmoniformes: Salmonidae). However, the post‐glacial dispersion of charr across Arctic regions is poorly understood, as knowledge of populations from Chukotka and its neighbouring areas remains limited. Specifically, there is no clear understanding of which charr species inhabit significant regions of Chukotka from the sea coasts to the Kolyma drainage. In this study, we explored the affiliation of lacustrine charrs from the Chukotka area with (1) the Arctic lineage of Taranetz' charr (Salvelinus taranetzi); (2) the Bering lineage of Northern Dolly Varden (Salvelinus malma malma) and (3) the Siberia and Atlantic lineages of Arctic charr (Salvelinus alpinus). We analysed sequence variation of the mitochondrial DNA control region (mtDNA CR; 960 base pairs) and genotyped seven microsatellite loci of nuclear DNA from charr collected at 13 sampling sites. We found different consequences of secondary contact: (1) complete fixation of introgressed mtDNA (mitochondrial capture) and (2) preservation of several mtDNA lineages with the absence of contemporary gene flow between resident populations. Combining the distribution patterns, phylogenetic network topology and knowledge of the glaciation history of the region, we propose two zones of secondary contact of the glacial lineages in Chukotka–Kolima‐Chukotka River system and Paleo‐Amguema River–from where charrs with introgressed genomes spread throughout this range. However, in some cases, the process of foreign mtDNA capture likely occurs in a more localised manner.

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Abnormalities and Bilateral Asymmetry of Otoliths in Arctic Charr Salvelinus alpinus Complex (Salmonidae) from Lakes Lama and Kapchuk, Taimyr

Pavlov,

Osinov

2024

J. Ichthyol.

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Differentiation of Arctic Charr Salvelinus alpinus Complex (Salmonidae) in Lakes Lama and Kapchuk (Taimyr) Based on Genetic Analysis, External Morphology, and Otolith Shape

Cited by 3 publications

References 57 publications

Comparative otolith morphology in two species of Salmo genus from Türkiye

Comparative otolith morphology in two species of Salmo genus from Türkiye

Multiple secondary contacts and historic hybridization between glacial lineages of charr (Salvelinus, Salmonidae) in northeastern Asia

Abnormalities and Bilateral Asymmetry of Otoliths in Arctic Charr Salvelinus alpinus Complex (Salmonidae) from Lakes Lama and Kapchuk, Taimyr

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