Urotricha furcata
[ref. ID; 6701]
Test system
Single-species and multi-species toxicity test
Microcosm
Three trophic levels: producers (mixotrophic phytoflagellate Cryptomonas sp. (strain SAG 26.80 from the Experimental Phycology and Culture Collection of Algae, Gottingen, Germany)) - consumers (predatory ciliate Urotricha furcata (by Th. Weisse (Austrian Academy of Sciences, Mondsee, Austria) and originally derived from the mesotrophic Lake Mondsee, Austria) - decomposer (unspecified bacterial community (originated from the non-axenic stock cultures of flagellates and ciliates)).
Toxicants
Parathion-methyl, Prometryn.
Test design
Static test system in 300 ml Erlenmeyer flasks filled with 100-150 mL cell suspension and closed with air-permeable lids. Modified WC medium (final nitrate concentration of 0.2 mM).
- Flagellate single-species test: OECD guideline 2001 (OECD, 2006). Experimental period 14 days.
- Ciliate single-species test: Experimental period 48 hr.
- Multi-species test: Experimental period 10-13 days.
Measurements/observations
Cell number.
Evaluations
NOEC.