Ecological Forms of Black Sea Brown Trout (Salmo trutta labrax) in the Mzymta River as Manifestation of Ontogenetic Plasticity
- Authors: Makhrov A.A.1,2, Artamonova V.S.1,2, Murza I.G.3, Pashkov A.N.4, Ponomareva M.V.5, Reshetnikov S.I.6, Christoforov O.L.3
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Affiliations:
- Severtsov Institute of Ecology and Evolution
- Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch
- St. Petersburg State University
- Azov Research Institute of Fisheries, Krasnodar Branch
- Moscow State University
- Kuban State University
- Issue: Vol 49, No 2 (2018)
- Pages: 117-127
- Section: Ontogenesis and Ecology
- URL: https://journals.rcsi.science/1062-3604/article/view/183733
- DOI: https://doi.org/10.1134/S1062360418020054
- ID: 183733
Cite item
Abstract
Populations of brown trout in the Mzymta River and its tributaries include anadromous (mainly female) and resident (mainly males) fish. Some resident males in the basin of the Mzymty River attain sexual maturity at the age 1+, and resident females mature at the age 2+ or 3+. The maximum age of resident fish is 4+ in the samples studied. Migrations of anadromous brown trout to the sea occur at the ages 1+, 2+, or 3+. Future spawners spend from 1 to 4 years at feeding grounds in the sea. Smolts of the population are characterized by performing not only spring but also autumn migrations to the sea. One smolt specimen has been detected upstream from the dam in the river where spawners of anadromous brown trout do not migrate; this means that the capability for sea migrations persists long in the population represented only by resident specimens of brown trout. The diversity of life cycles and ecological forms in populations of brown trout is not lower than in populations of brown trout in Northern and Western Europe. The comparison of the data obtained with published data makes it possible to come to the conclusion about the high plasticity of ontogenesis of Black Sea brown trout.
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About the authors
A. A. Makhrov
Severtsov Institute of Ecology and Evolution; Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch
Author for correspondence.
Email: makhrov12@mail.ru
Russian Federation, Moscow, 119071; Krasnoyarsk, 660036
V. S. Artamonova
Severtsov Institute of Ecology and Evolution; Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch
Email: makhrov12@mail.ru
Russian Federation, Moscow, 119071; Krasnoyarsk, 660036
I. G. Murza
St. Petersburg State University
Email: makhrov12@mail.ru
Russian Federation, St. Petersburg, 199034
A. N. Pashkov
Azov Research Institute of Fisheries, Krasnodar Branch
Email: makhrov12@mail.ru
Russian Federation, Krasnodar, 350000
M. V. Ponomareva
Moscow State University
Email: makhrov12@mail.ru
Russian Federation, Moscow, 119991
S. I. Reshetnikov
Kuban State University
Email: makhrov12@mail.ru
Russian Federation, Krasnodar, 350040
O. L. Christoforov
St. Petersburg State University
Email: makhrov12@mail.ru
Russian Federation, St. Petersburg, 199034