Acute Toxicity of Hexavalent Chromium on the Larvae of Red Seabream <I>Pagrus major</I>

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  • Kikkawa Takashi
    Head Office, Marine Ecology Research Institute Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • Nishimura Makoto
    The General Environmental Technos Co., Ltd.

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Other Title
  • マダイ<I>Pagrus major</I> 仔魚に対する六価クロムの急性致死影響
  • マダイPagrus major仔魚に対する六価クロムの急性致死影響
  • マダイ Pagrus majorシギョ ニ タイスル ロクカ クロム ノ キュウセイ チシ エイキョウ

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Abstract

In Japan, red seabream Pagrus major larvae have been recommended as a saltwater test fish for acute toxicity test of chemicals. However, for this species, there is no reference data of the lethality of hexavalent chromium, which is recommended as the standard substance for ecotoxicological tests in some test guidelines. Therefore, we examined the acute toxicity of hexavalent chromium (as potassium dichromate) on larvae of P. major according to the test guideline of the Ministry of Environment of Japan. The median lethal concentrations obtained from duplicate treatments were 28 mg/l for 24 hours, and 17 mg/l for 48 hours (calculated as the concentration of hexavalent chromium). Compared to other saltwater species, P. major larvae showed higher susceptibility to hexavalent chromium.

Journal

  • Aquaculture Science

    Aquaculture Science 62 (3), 229-234, 2014

    Japanese Society for Aquaculture Science

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