Natural toxic impact and thyroid signaling interplay orchestrates riverine adaptive divergence of salmonid fish ...

• Main Authors: Esin, Evgeny, Markevich, Grigorrii, Melnik, Nikolay, Kapitanova, Daria, Shkil, Fedor
• Format: Dataset
• Language: English
• Published: Dryad 2021
• Subjects: FOS: Animal and dairy science; toxic impact; Thyroid hormones; salmonids; Kamchatka River; Varden; Kamchatka
• Online Access: https://dx.doi.org/10.5061/dryad.34tmpg4jd; https://datadryad.org/stash/dataset/doi:10.5061/dryad.34tmpg4jd

Abstract 1. Adaptive radiation in fishes has been actively investigated over the last decades. Along with numerous well-studied cases of lacustrine radiation, some examples of riverine sympatric divergence have been recently discovered. In contrast to the lakes, the riverine conditions do not provide evident stability in the ecological gradients. Consequently, external factors triggering the radiation, as well as developmental mechanisms underpinning it, remain unclear. 2. Herein, we present the comprehensive study of external and internal drivers of the riverine adaptive divergence of the salmonid fish Salvelinus malma. In the Kamchatka River, N-E Asia, this species splits in the reproductively isolated morphs that drastically differ in ecology and morphology: the benthivorous Dolly Varden (DV) and the piscivorous Stone charr (SC). 3. To understand why and how these morphs originated, we performed a series of field and experimental work, including common-garden rearing, comparative ontogenetic, ... : The supplements are tables of primary data obtained during the field works and the experiments on Dolly Varden (Salvelinus malma) rearing. This species is not an endangered or protected species in the Russian Federation. Following the Federal law “On Fisheries and Conservation of Aquatic Biological Resources” №166-ФЗ, the non-commercial fishing of Dolly Varden charr does not require any permissions. All field and experimental procedures with fish were carried out according to the guidelines and following the laws and ethics of the Russian Federation and approved by the ethics committee of the Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences. ...