E.P. Murtazina – Ph.D. (Med.), Leading Research Scientist, Laboratory of General Physiology of Functional Systems, P.K. Anochin Institute of Normal Physiology (Moscow)

E-mail: e.murtazina@nphys.ru  

I.S. Matuylko – Junior Research Scientist, Laboratory of General Physiology of Functional Systems, P.K. Anokhin Institute of Normal Physiology (Moscow)

E-mail: iralemar@mail.ru

B.V. Zhuravlev – Dr.Sc. (Med.), Professor, Chief Research Scientist, Head of Laboratory, Laboratory of General Physiology of Functional Systems, P.K. Anokhin Institute of Normal Physiology (Moscow)

E-mail: b.zhuravlerb@nphys.ru

N.A. Shpringel – Research Scientist, Laboratory of General Physiology of Functional Systems,  P.K. Anokhin Institute of Normal Physiology (Moscow)

E-mail: n.springel@nphys.ru 

The method for determining the hierarchical rank of an animal in a group of rats on the basis of competition in satisfying thirst motivation using the construction of sociometric matrices of dyadic dominant relations was developed. To clarify the rank of animals, an additional analysis of the dynamics of changes in relations between subjects is proposed as the dominant motivation is satisfied in the process of experimental observation.

1. Ivanov D.G., Semenov N.A., Zajceva M.S. Metodika opredeleniya social'nogo statusa samcov krys v triadah // Uspekhi sovremennogo estestvoznaniya. 2014. № 9–1. S. 43–46. 
2. SHabanov P.D., Lebedev A.A. Zoosocial'noe povedenie krys // Obzory po klinicheskoj farmakologii i lekarstvennoj terapii. 2007. T. 5. S. 31. 
3. Altmann J. Observational study of behavior: sampling methods // Behaviour. 1974. V. 49. № 3. R. 227–267.
4. Appleby M.C. The probability of linearity in hierarchies // Anim. Behav. 1983. V. 31. R. 600–608.
5. Clarke F.M., Faulkes C.G. Dominance and queen succession in captive colonies of the eusocial naked mole-rat, Heterocephalus glaber. Proc Biol Sci. 1997. Jul 22. V. 264(1384) P. 993–1000.
6. Eaton J.M., Dess N.K., Chapman C.D. Sweet Success, Bitter Defeat: A Taste Phenotype Predicts Social Status in Selectively Bred Rats // PLoS ONE. 2012. V. 7. № 10. e46606. doi:10.1371/journal.pone.0046606.g001
7. Garfield A.S., Cowley M., Smith F.M., Moorwood K., Stewart-Cox J. E., Gilroy K., Ward A. Distinct physiological and behavioural functions for parental alleles of imprinted Grb10 // Nature. 2011. V. 469. P. 7331–7469.
8. Hoshaw B.A., Evans J.C., Mueller B., Valentino R.J., Lucki I. Social competition in rats: cell proliferation and behavior // Behavioural Brain Research. 2006. V. 175(2). P. 343–351.
9. Landau H. On dominance relations and the structure of animal societies: I. Effect of inherent characteristics // Bull. Math. Biol. 1951. № 13.  P. 1–19.
10. Norscia I., Palagi E. The socio-matrix reloaded: from hierarchy to dominance profile in wild lemurs // Vonk J., ed. PeerJ. 2015. № 3. e729. doi:10.7717/peerj.729.