Laboratory Animal and Comparative Medicine ›› 2020, Vol. 40 ›› Issue (1): 65-69.DOI: 10.3969/j.issn.1674-5817.2020.01.011

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Probe into Standardization of Acute Toxicity Test Method for Sea Urchin (Anthocidaris crassispina)

LAI Suqun, YU Lujun, WU Meihui, ZENG Jin, LI Jianjun   

  1. Guangdong Laboratory Animals Monitoring Institute, Key Laboratory of Guangdong Laboratory Animals, Guangzhou 510663, China
  • Received:2019-04-24 Online:2020-02-25 Published:2020-12-18

Abstract: Objective To optimize the sea urchin (Anthocidaris crassispina) acute toxicity test conditions and provide the scientific basis for standard test methods. Methods Cultivate sea urchins at a water temperature of 20 ℃, 22 ℃, 24 ℃, 26 ℃, 28 ℃ and 30 ℃ respectively, and record the larval development time and mortality. Calculate the 96 h LC50 and the coefficient of variation of Cr6+, Zn2+, 3,5- Ddichlorophenol, Sodium dodecyl sulfate on the larvae at different developmental stages. Results In 24-26 ℃ water temperature, the survival rate was higher and the larval were growing more rapidly. The 96 h LC50 of 12 day-old sea urchin for Cr6+, Zn2+, 3,5-Ddichlorophenol, Sodium dodecyl sulfate were 1.40, 1.69, 3.60 and 3.95 mg/L respectively. The sensitivity of 12 day-old sea urchin was moderate and the coefficient of variation of toxicity test was low. Conclusions The suitable temperature of acute toxicity test for sea urchin larvae is 24-26 ℃, and the best starting day age for the test is 12 days age. Anthocidaris crassispina is a species suitable for marine pollutant toxicity test.

Key words: Sea urchin(Anthocidaris crassispina), Acute toxicity, Standardized, Coefficient of variation

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