Smurov A.O., Komendantov A.Yu., Khalaman V.V. 2009. [Salinity tolerance polygon of Nereis pelagica Linnaeus, 1761 (Polychaeta: Nereidae)] // Invertebrate Zoology. Vol.5 (for 2008). No.1: 9–16 [in Russian, with English summary].

Zoological Institute of RAS, Universitetskaja nab., 199034 St.-Petersburg, Russia. E-mail: aral4@zin.ru

KEY WORDS: Nereis pelagica, potential tolerance, tolerance polygon, salinity.

ABSTRACT: Adaptive abilities of White Sea polychaete worm Nereis pelagica Linnaeus, 1761 to changes of environmental salinity were investigated. Salinity tolerance ranges for certain values of acclimation salinity were determined. The obtained data were used for construction of the salinity tolerance polygon and an estimation of the potential salinity range. According to the obtained results N. pelagica can survive in the range of 6–70‰. Estimates of salinity tolerance ranges in a diapason of acclimation salinity 6–25‰ demonstrate that N. pelagica can inhabit almost anywhere in the White Sea except for some estuaries and surface layers which have salinity less than 6–7‰.

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