Interlaboratory assessment of marine bioassays to evaluate the environmental quality of coastal sediments in Spain. V. Whole sediment toxicity test using juveniles of the bivalve Ruditapes philippinarum

Interlaboratory assessment of marine bioassays to evaluate the environmental quality of coastal sediments in Spain. V. Whole sediment toxicity test using juveniles of the bivalve Ruditapes philippinarum

Several species of bivalves and procedures have been used to characterize sediment toxicity. Here we report the results of an interlaboratory exercise that included three different laboratories to evaluate the use of the bioassay using the commercial clam Ruditapes philippinarum. Six different dredg...

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主要な著者: Casado-Martínez, MC, Blasco, J, González-Castromil, MA, Riba, I, del-Valls, TA
フォーマット: info:eu-repo/semantics/article
言語:eng
出版事項: Iniversidad Autónoma de Baja California 2006
主題:
Manila clam
dredged material
burrowing activity
almeja de Manila
material de dragado
tasa de enterramiento
オンライン･アクセス:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1030
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要約:Several species of bivalves and procedures have been used to characterize sediment toxicity. Here we report the results of an interlaboratory exercise that included three different laboratories to evaluate the use of the bioassay using the commercial clam Ruditapes philippinarum. Six different dredged sediments were studied using two different endpoints: lethality after two different exposure periods (7 and 14 days) and burrowing activity after 48 h of exposure. The lethal endpoint was only sensitive to characterize samples with high metallic concentration and following the 14-day exposure period. The burrowing activity showed very variable results that evidence the unsuitability of this endpoint for dredged material characterization. According to these results, a new design is recommended for the test using juvenile bivalves if it is to be used to characterize sediment samples on a regulatory context especially if sediments are not affected by metallic contamination.

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