The timing of spawning specific to the charr morphs in the Lake Kronotskoe tributaries and to the anadromous Dolly Varden in the Kamchatka River tributaries.

• Main Authors: Evgeny V. Esin (7062809), Grigorii N. Markevich (7062812), Nikolai O. Melnik (11570606), Dmitriy V. Zlenko (11570609), Fedor N. Shkil (11570612)
• Format: Other Non-Article Part of Journal/Newspaper
• Language: unknown
• Published: 2021
• Subjects: Evolutionary Biology; Ecology; Developmental Biology; Environmental Sciences not elsewhere classified; Biological Sciences not elsewhere classified; strong predictive power; specific ontogenetic adaptations; mechanisms promoting resource; environmentally related shift; east asia ); animals still represent; spawning site ’; proposed equation shows; sympatric morphs reveal; wide temperature tolerance; observed developmental disparities; lake kronotskoe basin; dynamically changing temperatures; div >< p; annual temperature dynamics; salvelinus malma </; morphs ’ development; ancestral anadromous morph; lake kronotskoe; temperature dynamics; spawning grounds; malma </; arrhenius equation; endemic morphs; ambient temperature; uniformed temperatures; thoroughly assessed; size dissimilarities; significantly affect; salmonid fish; reproductive sites; phenotype tied; onset timing; naturally diverging; method based; main challenge; growth rates; findings demonstrate; factor contributing; external feeding; experimental rearing; different temperatures; contrast temperatures; based radiation; adaptive radiation; accumulated heat; Varden; Kamchatka
• Online Access: https://doi.org/10.1371/journal.pone.0258536.s002

The dates of egg collecting are shown as green lines: № 1 –N2, № 2 –N1g, L and N3, № 3 –W and DV. The data is based on annual observations of 2011-2019 on the largest found spawning ground where the eggs were collected for the experiment. The colour intensity denotes the relative density of spawning, i.e. the number of breeding pairs simultaneously accounted at the site. The beginning of spawning was considered as a formation of the first stable spawning pairs holding nests; the height of spawning was the period when dozens of spawners were breeding (no less than 50 pairs per site); the end of spawning was considered as the migration of most spawners downstream. The external appearance and colouration of spawners of each morph is represented below. No ambiguous cases in assigning a fish to one of the morphs were registered at the spawning sites. (DOCX)