Using the polychaete Arenicola marina to determine toxicity and bioaccumulation of PAHS bound to sediments

Abstract

The present study was conducted to evaluate a sediment toxicity and bioavailability test with the polychaete Arenicola marina as a potential tool to assess sediments contaminated by oil spills. A bioassay using the lugworm Arenicola marina was carried out in order to determine toxicity and bioaccumulation associated with the contaminants present in the fuel oil extracted from a sank tanker. After 10 and 21 days of exposure to sediments with different proportions of fuel oil (0.5, 1, 2, 4 and 8%) polychaetes were sampled to determine the mortality and the levels of individual PAHs in the organisms. During the experiment, mortality was recorded and the concentration (percentage of fuel oil) that provokes the mortality of the 50% of the Arenicola marina population exposed was calculated for both sampling dates (LC50(10) = 6.4%; LC50(21) = 2.4%). Bioaccumulation was mainly produced for fluoranthene, pyrene, benzo(b)fluoranthene and benzo(k)fluoranthene, whereas phenantrene and anthracene where initially accumulated and then metabolized. The results obtained in the present study suggest Arenicola marina can be a suitable species for assessing PAHs toxicity and bioaccumulation as part of oil spill management.

Assessing metal bioaccumulation from estuarine sediments: comparative experimental results for the polychaete Arenicola marina

“…Its use has been tested in the development of longer-term assays which measure effects on sublethal endpoints, considered more relevant to predicting impacts at the population level (Allen et al 2007), and several biomarkers are being validated in laboratory-exposed organisms and organisms from field toxicity bioassays using benthic cages (Ramos-Gomez et al 2011a, b). A. marina has been also used in bioaccumulation and toxicity studies of organic (Thain et al 1997;K a a ge ta l .1998; Timmermann and Andersen 2003;Morales-Caselles et al 2008) and metal contaminants (Bernds et al 1998;Casado-Martinez et al 2010a;Kalman et al 2012), and several studies have used A. marina as a model organism for describing the bioavailability of sediment-bound contaminants to deposit feeders in in vitro studies (Chen and Mayer 1999;Lawrenceetal.1999;Turner et al 2008).…”

Identification of differentially expressed genes in liver of marine medaka fish exposed to benzo[a]pyrene

“…Once inside the body, BaP can become concentrated in the liver, kidney, and brain 1 . The measurement of BaP concentration in living organisms and the effects induced by BaP bioaccumulation have been previously reported in aquatic plants 2 , mussels 3 , polychaetes 4 , and fishes 5 . Additionally, BaP exposure is known to be associated with a variety of developmental, immunological disorders 6,7 and cancers 8 .…”

Mengenal Jenis-Jenis Cacing Laut Dan Peluang Budidayanya Untuk Penyediaan Pakan Alami Di Pembenihan Udang

“…Walaupun demikian cacing laut yang berasal dari alam mempunyai risiko membawa penyakit dan zat-zat toksik berbahaya yang dapat menular ke induk udang (Vijayan et al, 2005;Morales et al, 2008). Oleh karena itu, diperlukan budidaya cacing laut, karena dengan budidaya lingkungan dapat dikontrol sehingga produk hasil budidaya lebih aman dibandingkan dengan hasil penangkapan di alam.…”