title: [Osmotic tolerance and adaptation to hypotonic medium of Echinorhynchus gadi (Acanthocephala, Echinorhynchidae)].
abstract: Minimum of the osmotic pressure in the intestine of the cod corresponds to the osmotic pressure of sea water of 10%. The sorbtion level of neutral red by intact E. gadi remained practically unchanged after their maintenance in sea water of 8-10 to 30% during 24 hours (ecological optimum). Specimens of E. gadi transferred from 10 to 4% displayed compensatory recovery of the normal sorbtion level of the dye by the 5th-6th day of the experiment. The ability of Acanthocephala possessing extreme eutelia to a physiological adaptation is indicative of its not obligatory participation of mitotic processes in the acclimation.
mesh_terms: D000042:Absorption; D000049:Acanthocephala / Q000166:cytology / Q000502:physiology*; D000222:Adaptation, Physiological; D000818:Animals; D005399:Fishes / Q000469:parasitology*; D007038:Hypotonic Solutions; D007422:Intestines / Q000469:parasitology; D009499:Neutral Red; D009997:Osmotic Pressure; D012623:Seawater
chemical_list: D007038:Hypotonic Solutions; D009499:Neutral Red
vernacular_title: Osmoticheskaia tolerantnost' i adaptatsiia k gipotonicheskomu vozdeĭstviiu u Echinorhynchus gadi (Acanthocephala, Echinorhynchidae