| 牡蛎礁修复的底物筛选：新、旧牡蛎壳附苗效果比较#br# |
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| 引用本文： | 姜伟,孙兆跃,施文静,范瑞良,李楠楠,全为民.牡蛎礁修复的底物筛选：新、旧牡蛎壳附苗效果比较#br#[J].海洋渔业,2021,43(2):176-183. |
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| 作者姓名： | 姜伟 孙兆跃 施文静 范瑞良 李楠楠 全为民 |
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| 作者单位： | 上海海洋大学水产与生命学院;中国水产科学研究院东海水产研究所 |
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| 基金项目： | 国家重点研发计划(2020YFD0900805)。 |
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| 摘 要： | 通过2019年室内和野外附着实验,检验了牡蛎壳(新壳和旧壳)和生物膜(有生物膜和无生物膜)对牡蛎附着量的影响。室内附着实验表明,在生物膜处理下新壳上牡蛎附着量显著高于旧壳(P<0.05);而在无生物膜对照组中,新、旧壳上牡蛎附着量无显著差异(P>0.05)。野外附着实验发现,生物膜显著提升了旧壳上牡蛎附着量,但对新壳上牡蛎附着量无显著影响。通过2020年野外附着实验,检验了牡蛎壳(新壳和旧壳)和潮区(滩面以上0.6 m和1.1 m)对牡蛎和藤壶附着量的影响。牡蛎附着量在每个潮区中,15 d、45 d和70 d时新壳均显著高于旧壳(P<0.05)。藤壶附着量仅在0.6 m潮区中、15 d时新壳显著高于旧壳,而45 d和70 d时,各潮区中新、旧壳上藤壶附着量均无显著差异(P>0.05)。研究发现,总体来看新壳的附苗效果好于旧壳,这种差异涵盖了整个牡蛎繁殖、附着及补充的高峰期。因此,牡蛎礁修复中应优先选取新壳作为底物。
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| 关 键 词： | 牡蛎礁 底物筛选 牡蛎苗 藤壶苗 附着 生物膜 |
Substrate selection for oyster reef restoration:Differences in oyster settlement and recruitment on fresh and old oyster shells |
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| JIANG Wei,SUN Zhaoyue,SHI Wenjing,FAN Ruiliang,LI Nannan,QUAN Weimin.Substrate selection for oyster reef restoration:Differences in oyster settlement and recruitment on fresh and old oyster shells[J].Marine Fisheries,2021,43(2):176-183. |
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| Authors: | JIANG Wei SUN Zhaoyue SHI Wenjing FAN Ruiliang LI Nannan QUAN Weimin |
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| Institution: | (College of Fishery and Life Science,Shanghai Ocean University,Shanghai 201300,China;Key Laboratory of East China Sea Fishery Resources Exploitation,Ministry of Agriculture and Rural Affairs,East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Shanghai 200090,China) |
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| Abstract: | The lab and field experiments of 2019 examined the effects of oyster shell type and biofilm on oyster settlement and recruitment.Results from the lab experiment indicated that both shell type and biofilm significantly affected the densities of settled oysters.There were higher settlement and recruitment of oyster spats on the fresh oyster shell with biofilm than on the old oyster shell with biofilm(P<0.05),but differences in the densities of settled spat were not evident between these two shells without biofilm(P>0.05).Biofilm significantly increased the attractiveness of the fresh shell to oyster larvae(P<0.05),but had little influence on the old shell(P>0.05).The field experiment of 2019 found the contrast patterns.Oyster shell type had no influence on the densities of settled oysters,while biofilm significantly increased the biological acceptability of the old shell.The field experiment of 2020 examined the effects of oyster shell and tidal zone on the densities of settled oysters and barnacles.Two-way ANOVA found that shell types significantly affected the densities of settled oyster spats,while tidal zone had little effect on oyster settlement.At each of the two tidal levels(0.6 m and 1.1 m),there were consistently greater densities of settled oyster spats on the fresh shell than on the old shell on the 15 d,45 d and 70 d(P<0.05).Results from two-way ANOVA demonstrated that neither shell types or biofilm had significant effect on the shell height of settled oysters.Settled spats measured on 45 d and 70 d had significantly greater size than those on 15 d(P<0.05).Results from two-way ANOVA found that oyster shell had no influence on barnacle settlement,while tidal zone significantly affected barnacle settlement.Higher densities of settled barnacles were found on the fresh shell than on the old shell in the 0.6 m tidal zone on 15 d(P<0.05),whereas the difference disappeared at each of the two tidal levels on the 45 d and 70 d(P>0.05).The study indicated that there were generally higher oyster settlement and recruitment on the fresh shell than on the old shell,and the evident differences extended to the recruitment season.Therefore,it concluded that the fresh shell were more preferable substrate for oyster reef restoration than the old shell. |
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| Keywords: | oyster reef substrate selection oyster spat barnacle spact settlement biofilm |
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