Activity of Digestive Enzymes in the American Mink (Neovison vison) Selected for Tameness and Defensive Aggression toward Humans

S. N. Kalinina, V. A. Ilyukha, O. Trapezov, A. Morozov, L. Trapezova, M. A. Nekrasova, M. A. Stepanova, E. A. Sysoeva

Research output: Contribution to journalArticlepeer-review


Selection of animals for a defensive reaction toward humans underlies the domestication of species and leads to genome destabilization, as well as restructuring of the nervous and hormonal systems that regulate many physiological functions, including digestion . The aim was to study the activity of digestive enzymes (amylase, lipase and proteases) in the pancreas, duodenum and jejunum of the American mink (Neovison vison) of two behavioral types, aggressive and tame. Our findings suggest that pleiotropic effects of behavioral genes are also involved in the regulation of digestive enzyme activity in the American mink. Despite the same diet, aggressive vs. tame animals were characterized by a higher activity of proteases and lipase, whereas in tame minks, the amylolytic profile of digestive enzyme activity was predominant. Discriminant analysis confirmed the differences between aggressive and tame minks, but not between the two groups of aggressive animals, in terms of the parameters studied. The revealed differences in the profile of the activity of digestive enzymes can be associated with mutations in the enzyme genes, as well as mediated action of hormones involved in stress reactivity.

Translated title of the contributionАктивность пищеварительных ферментов у американских норок (Neovison vison) при отборе на агрессивное и ручное поведение
Original languageEnglish
Pages (from-to)64-72
Number of pages9
JournalJournal of Evolutionary Biochemistry and Physiology
Issue number1
Publication statusPublished - Jan 2022


  • American mink
  • selection for a defensive response to humans
  • amylase
  • protease
  • lipase
  • gastrointestinal tract
  • hypothalamic-pituitary-adrenal axis
  • DIET




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