title: Evaluation of bioremediation potential of three benthic annelids in organically polluted marine sediment.
abstract: This study aimed to evaluate the possible remedial effects of three marine benthic annelids on organically polluted sediments from the waters of Hatsukaichi Marina, Hiroshima, Japan. Two polychaetes, Perinereis nuntia and Capitella cf. teleta, and an oligochaete, Thalassodrilides sp., were incubated in sediments for 50 days. Their effects on physicochemical properties such as organic matter (loss on ignition), redox potential (Eh), acid volatile sulfides (AVS), and degradation of polycyclic aromatic hydrocarbons (PAHs) were assessed. The polychaetes P. nuntia and C. cf. teleta significantly increased Eh level and decreased AVS level compared with the oligochaete Thalassodrilides sp. and control (without benthic organisms). Total PAH concentration significantly decreased from the initial level with all three groups; Thalassodrilides sp. had a marked ability to reduce PAHs in sediment. These results indicate that benthic organisms have species-specific remediation properties and ecological functions in organically polluted sediments.
authors: National Research Institute of Fisheries and Environment of Inland Sea, Japan Fisheries Research and Education Agency, Maruishi 2-17-5, Hatsukaichi, Hiroshima, 739-0452, Japan. Electronic address: nozakim@affrc.go.jp.
authors: Mana
authors: M
authors: Ito
authors: National Research Institute of Fisheries and Environment of Inland Sea, Japan Fisheries Research and Education Agency, Maruishi 2-17-5, Hatsukaichi, Hiroshima, 739-0452, Japan. Electronic address: katsuit@affrc.go.jp.
authors: Katsutoshi
authors: K
authors: Ito
authors: South Ehime Fisheries Research Center, Ehime University, 1289-1, Funakoshi, Ainan, Ehime, 798-4292, Japan. Electronic address: kohta@agr.ehime-u.ac.jp.
authors: Kohei
authors: K
authors: Ohta
authors: National Research Institute of Fisheries and Environment of Inland Sea, Japan Fisheries Research and Education Agency, Maruishi 2-17-5, Hatsukaichi, Hiroshima, 739-0452, Japan. Electronic address: hntks@affrc.go.jp.
authors: Takeshi
authors: T
authors: Hano
authors: National Research Institute of Fisheries and Environment of Inland Sea, Japan Fisheries Research and Education Agency, Maruishi 2-17-5, Hatsukaichi, Hiroshima, 739-0452, Japan. Electronic address: onduka@affrc.go.jp.
authors: Toshimitsu
authors: T
authors: Onduka
authors: National Research Institute of Fisheries and Environment of Inland Sea, Japan Fisheries Research and Education Agency, Maruishi 2-17-5, Hatsukaichi, Hiroshima, 739-0452, Japan. Electronic address: kmochida@affrc.go.jp.
authors: Kazuhiko
authors: K
authors: Mochida
authors: National Research Institute of Fisheries and Environment of Inland Sea, Japan Fisheries Research and Education Agency, Maruishi 2-17-5, Hatsukaichi, Hiroshima, 739-0452, Japan. Electronic address: kazfujii@affrc.go.jp.
authors: Kazunori
authors: K
authors: Fujii
mesh_terms: D000818:Animals; D001673:Biodegradation, Environmental; D019015:Geologic Sediments; D007564:Japan; D009835:Oligochaeta / Q000378:metabolism*; D011077:Polychaeta / Q000378:metabolism*; D011084:Polycyclic Aromatic Hydrocarbons / Q000378:metabolism*; D013440:Sulfides / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D013440:Sulfides; D014874:Water Pollutants, Chemical
keywords: Marine benthic organisms; Oligochaete; Organic pollutants; PAHs; Polychaete; Sediment