Contents

Doklady Biological Sciences

Vol. 492, No. 1, 2020

General Biology

Skull Morphology Variation as Related to Trophic Specialization in Three Forms of Salvelinus malma (Salmonidae) from the Kamchatka River Basin

N. O. Melnik and E. V. Esin p. 75  abstract

Stevioside Has the Maximum Biological Activity among Natural Stevia Diterpenes

U. A. Ogorodnova, A. S. Sapunova, O. A. Timofeeva and Corresponding Member of the RAS V. F. Mironov p. 79  abstract

Physiological and Biochemical Strategies of Adaptation in Halophytes

O. A. Rozentsvet, V. N. Nesterov, E. S. Bogdanova and Corresponding Member of the RAS G. S. Rozenberg p. 83  abstract

New Data on the Expansion of Eurytemora Giesbrecht (Copepoda: Calanoida) in the Russian Arctic Region

E. B. Fefilova, N. M. Sukhikh, E. E. Rasova, I. O. Velegzhaninov and E. N. Abramova p. 86  abstract

Is There a Relationship between the Chitty Effect and the Types of Population Dynamics?

V. D. Yakushov and B. I. Sheftel p. 89  abstract

First Description of the Fur of Two Cubs of Fossil Cave Lion Panthera spelaea (Goldfuss, 1810) Found in Yakutia in 2017 and 2018

O. F. Chernova, A. V. Protopopov, G. G. Boeskorov, I. S. Pavlov, V. V. Plotnikov and N. Suzuki p. 93  abstract

The Phenomenon of Synchronous Food Intake in Starlings (Sturnus vulgaris) under the Conditions of Isolation from Each Other

M. E. Diatroptov, M. V. Rutovskaya and Corresponding Member of the RAS A. V. Surov p. 99  abstract

New Data on the Holocene Mammal Fauna of the Ustyurt Plateau

P. A. Kosintsev, O. P. Bachura, V. V. Gasilin, D. O. Gimranov, Z. Samashev, T. N. Loshakova, A. Onggaruly, A. A. Bisembaev and Academician V. N. Bol’shakov p. 103  abstract