title: Physiological and biochemical responses of the Polychaete Diopatra neapolitana to organic matter enrichment.
abstract: Several studies have demonstrated that organic matter enrichment may be associated to aquaculture, leading to impoverished benthic communities and species succession with loss of biodiversity, but very few studies have investigated biochemical and physiological alterations that species affected by aquaculture activities undergo. Thus, in the present study, the effects of the organic enrichment originating from an oyster culture were studied in the Polychaete Diopatra neapolitana, a species already shown to be sensitive to inorganic contamination. For this, physiological responses and biochemical alterations were evaluated. The results obtained revealed that individuals from highly organically enriched areas presented lower capacity to regenerate their body but higher glycogen and protein levels. Furthermore, with increasing organic matter D. neapolitana increased the lipid peroxidation (LPO), the oxidized glutathione content (GSSG) and Glutathione S-transferase activity (GSTs) content, and the activity of the antioxidant enzymes catalase (CAT) and superoxide dismutase (SOD). This study evidenced that organic matter enrichment induced biochemical and physiological alterations in D. neapolitana. Thus, this species was shown to be a good sentinel species to monitor organic contamination.
authors: Departamento de Biologia, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
authors: Vanessa
authors: V
authors: Carregosa
authors: Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
authors: Cátia
authors: C
authors: Velez
authors: Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
authors: Adília
authors: A
authors: Pires
authors: Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
authors: Amadeu M V M
authors: AM
authors: Soares
authors: Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal.
authors: Etelvina
authors: E
authors: Figueira
authors: Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193 Aveiro, Portugal. Electronic address: rosafreitas@ua.pt.
authors: Rosa
authors: R
authors: Freitas
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology; D015415:Biomarkers; D002374:Catalase / Q000378:metabolism; D004784:Environmental Monitoring; D005982:Glutathione Transferase / Q000378:metabolism; D015227:Lipid Peroxidation / Q000187:drug effects; D018384:Oxidative Stress / Q000187:drug effects; D011077:Polychaeta / Q000187:drug effects* / Q000378:metabolism*; D013482:Superoxide Dismutase / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000494:pharmacology*
chemical_list: D000975:Antioxidants; D015415:Biomarkers; D014874:Water Pollutants, Chemical; D002374:Catalase; D013482:Superoxide Dismutase; D005982:Glutathione Transferase
keywords: Antioxidant enzymes; Body regeneration; Organic matter; Oxidative stress; Oyster culture; Polychaetes