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Larval settlement and metamorphosis of the mussel Mytilus coruscus in response to natural biofilms
Authors:Chong Wang  Wei-Yang Bao  Zhong-Qi Gu  Yi-Feng Li  Xiao Liang  Yun Ling
Institution:1. College of Fisheries and Life Science, Shanghai Ocean University , Shanghai , China;2. Institute of Marine Science and Technology, Yangzhou University , Yangzhou , China;3. Shengsi Service Center of Marine Science and Technology Development , Zhoushan , China;4. Faculty of Fisheries, Nagasaki University , Nagasaki , Japan
Abstract:Settlement and metamorphosis of pediveliger larvae of Mytilus coruscus in response to natural biofilms was investigated in the laboratory. Pediveliger larvae settled and metamorphosed in response to biofilms and post-larval settlement and metamorphosis increased with biofilm age. The activity of the biofilm was positively correlated with biofilm age, dry weight, bacterial density and diatom density, but had no apparent relationship with chlorophyll a concentration. The change in bacterial community composition corresponding to biofilm age may explain differences in the age-dependent inducing activities of biofilms, which in turn may play an important role in larval settlement in this species.
Keywords:mussel  larval settlement and metamorphosis  biofilm  bacterial community structure
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