Geographical variability and allometry of morphological traits in Siberian taimen Hucho taimen (Salmonidae): Case study on fish from the Amur and Kama Rivers

Pavel B. Mikheev, Ryan Easton, Fasil Taddese, Lei Li

Zoological Systematics ›› 2025, Vol. 50 ›› Issue (2) : 170-179.

PDF(6479 KB)
动物分类学报
PDF(6479 KB)
Zoological Systematics ›› 2025, Vol. 50 ›› Issue (2) : 170-179. DOI: 10.11865/zs.2025207  CSTR: 32106.14.zs.2025207
研究论文

Geographical variability and allometry of morphological traits in Siberian taimen Hucho taimen (Salmonidae): Case study on fish from the Amur and Kama Rivers

  • Pavel B. Mikheev1, 2, Ryan Easton3, Fasil Taddese3, 4, 5, Lei Li6, 7
作者信息 +

Geographical variability and allometry of morphological traits in Siberian taimen Hucho taimen (Salmonidae): Case study on fish from the Amur and Kama Rivers

  • Pavel B. Mikheev1, 2, Ryan Easton3, Fasil Taddese3, 4, 5, Lei Li6, 7
Author information +
文章历史 +

摘要

Siberian taimen Hucho taimen (Pallas, 1773) is a broadly distributed and popular sport fish with high economic value. However, low abundance and hard-to-reach habitat make the Siberian taimen a relatively understudied species. Here we describe the morphological variability of two size groups of Siberian taimen juveniles from the eastern (Amur River basin) and western (Kama River basin) parts of the species distribution. The largest morphological differentiation of Siberian taimen juveniles was observed at the inter-basin level. In the Amur River basin, Siberian taimen juveniles also differed morphologically even at sites located at a distance of 20 km from each other, which may be explained by a small home-range inhabitation of juveniles leading to the formation of their morphotype determined by local environmental conditions. The pattern of allometry varies in taimen from different rivers, which could be related to the ontogenetic shift of ecological niches and the level of heterogeneity of the river environment.

Abstract

Siberian taimen Hucho taimen (Pallas, 1773) is a broadly distributed and popular sport fish with high economic value. However, low abundance and hard-to-reach habitat make the Siberian taimen a relatively understudied species. Here we describe the morphological variability of two size groups of Siberian taimen juveniles from the eastern (Amur River basin) and western (Kama River basin) parts of the species distribution. The largest morphological differentiation of Siberian taimen juveniles was observed at the inter-basin level. In the Amur River basin, Siberian taimen juveniles also differed morphologically even at sites located at a distance of 20 km from each other, which may be explained by a small home-range inhabitation of juveniles leading to the formation of their morphotype determined by local environmental conditions. The pattern of allometry varies in taimen from different rivers, which could be related to the ontogenetic shift of ecological niches and the level of heterogeneity of the river environment.

关键词

Freshwater salmonids, morphotype variability, environmental heterogeneity, ontogenetic shift, ecological niche breadth

Key words

Freshwater salmonids, morphotype variability, environmental heterogeneity, ontogenetic shift, ecological niche breadth

引用本文

EndNote

Ris (Procite)

Bibtex

导出引用
Pavel B. Mikheev, Ryan Easton, Fasil Taddese, Lei Li. Geographical variability and allometry of morphological traits in Siberian taimen Hucho taimen (Salmonidae): Case study on fish from the Amur and Kama Rivers[J]. Zoological Systematics. 2025, 50(2): 170-179 https://doi.org/10.11865/zs.2025207
Pavel B. Mikheev, Ryan Easton, Fasil Taddese, Lei Li. Geographical variability and allometry of morphological traits in Siberian taimen Hucho taimen (Salmonidae): Case study on fish from the Amur and Kama Rivers[J]. Zoological Systematics. 2025, 50(2): 170-179 https://doi.org/10.11865/zs.2025207

PDF(6479 KB)

Accesses

Citation

Detail
段落导航
相关文章
版权所有 © 《动物分类学报》编辑部

/

〈 〉