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полныйинформационныйкраткий
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    Instability Stabilized: Mechanisms of Evolutionary Stasis and Genetic Diversity Accumulation in Fishes and Lampreys from Environments with Unstable Abiotic Factors / A. A. Makhrov, V. S. Artamonova // Contemp. Probl. Ecol. - 2020. - Vol. 13, Is. 4. - P370-381, DOI 10.1134/S1995425520040083. - Cited References:141. - We are grateful to Yu.P. Altukhov, I.N. Bolotov, E.A. Borovikova, I.V. Vikhrev, Yu.Yu. Dgebuadze, E.Yu. Krysanov, K.V. Kuzishchin, B.M. Mednikov, M.V. Mina, V.M. Spitsyn, and V.S. Fridman for helpful discussions of the problems considered in the review. The work was supported by the Russian Science Foundation (project no. 16-14-10001). . - ISSN 1995-4255. - ISSN 1995-4263
РУБ Ecology
Рубрики:
SEBASTES-MENTELLA EVIDENCE
   MTDNA CONTROL REGION

   POPULATION-STRUCTURE

Кл.слова (ненормированные):
ecology -- evolution -- phenotypic plasticity -- heterozygosity -- heteroplasmy -- mobilization reserve -- Arctic -- mountains
Аннотация: As studies have shown, individuals from well morphologically distinct groups often represent the same species and may even belong to one population in fishes and lampreys from environments with unstable abiotic factors (Arctic, mountain, and desert regions). Phenotypic plasticity ensures broad variation ranges of morphological traits in unstable conditions, which require rapid transitions from one morphogenetic variant to another. The choice of a morphogenetic pathway can be influenced by the level of individual heterozygosity, changes in the copy numbers of certain DNA sequences, heteroplasmy, and the presence of several allelic variants in the genes that strongly affect the phenotype. A cyclic character is often observed for evolutionary processes driven by these mechanisms, and speciation usually does not take place in unstable environmental conditions. However, mobilization reserve accumulate in a species with a broad reaction norm, and particular morphogenetic pathways may be genetically fixed when its population finds its way into stable environmental conditions, facilitating fast allopatric speciation.

WOS
Держатели документа:
Russian Acad Sci, Severtsov Inst Ecol & Evolut, Moscow 119071, Russia.
Russian Acad Sci, Krasnoyarsk Sci Ctr, Fed Res Ctr, Inst Biophys,Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Makhrov, A. A.; Artamonova, V. S.; Russian Science FoundationRussian Science Foundation (RSF) [16-14-10001]

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