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- Title
Effects of density on growth, body composition and antioxidant indicators of <italic>Perinereis aibuhitensis</italic> and total nitrogen in sediments.
- Authors
Lv, Fu; Nie, Qing; Yu, Ye‐bing; Liu, Fei; Lv, Lin‐lan; Zhao, Wei‐hong; Zhang, Gen
- Abstract
Abstract: <italic>Perinereis aibuhitensis</italic> is a marine polychaete living in intertidal zones that has important economic values. The present study investigated the effects of density on growth, body component and indices of antioxidant status of <italic>P. aibuhitensis</italic> as well as content of total nitrogen in sediments. When density was above 600 ind/m2, specific growth rate and protein efficiency ratio both decreased, suggesting that the optimal density ranged from 400 to 600 ind/m2. Survivorship and content of crude protein of <italic>P. aibuhitensis</italic> significantly decreased at densities above 700 ind/m2. At densities above 700 ind/m2, activities of superoxide dismutase (SOD) and catalase (CAT) as well as contents of methane dicarboxylic aldehyde (MDA) were significantly up‐regulated, suggesting oxidative stresses to clamworms, which might explain the reduced survivorship. Moreover, total nitrogen content in sediment per kilogram of <italic>P. aibuhitensis</italic> significantly increased at density above 600 ind/m2, suggesting that high density resulted in the extra release of N to the environment, which might pollute the habitats and become toxic to clamworms.
- Subjects
POLYCHAETA; AQUACULTURE &; the environment; NITROGEN content of forest soils; SEDIMENTS; ANTIOXIDANT analysis; PHYSIOLOGY
- Publication
Aquaculture Research, 2018, Vol 49, Issue 6, p2288
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1111/are.13690