Active standard | Published: 16/06/2016

ISO/TS 18220:2016

Water quality — Larval development test with the harpacticoid copepod Nitocra spinipes
(Qualité de l´eau — Essai de développement larvaire avec le copépode harpacticoide Nitocra spinipes)

Available languages: English

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Detail information

Designation: ISO/TS 18220:2016

Publication date: 16/06/2016

Pages: 20

Country: International technical standard

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Anotation

Description / Abstract: ISO/TS 18220:2016 specifies an early-life stage procedure for determination of the toxic effects of chemicals and water samples on a cold-water brackish water copepod species under semi-static conditions. The biological test variables include survival and development of the early-life stages. The exposure starts with newly hatched (<24 h) nauplii (larvae) and is continued until emergence of (c. 50 %) copepodites (juveniles) in the control. The benthic living Nitocra complements the planktonic Acartia species in ISO 16778. These organisms represent different life-history strategies as Nitocra is egg-carrying, whereas Acartia is a broadcasting calanoid copepod and thus, different sensitivities of specific life stages. Nitocra is a fresh to brackish water species, which allows testing low salinity waters and is complementary to A. tonsa, which is of marine origin and poorly tolerates low salinities.

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