| 摘要: |
| 于2013-2014 年在三沙湾选择增殖放流区Ⅰ区和Ⅱ区, 开展了2 批次的缢蛏增殖放流, 计 放流缢蛏苗数量约3747 万粒。采用对缢蛏生长、生物量动态变化和滩涂底质主要因子跟踪监测的方 法, 开展对缢蛏增殖放流效果的评估。研究结果, 2 个增殖放流区的缢蛏密度和缢蛏生物量都比对照 区有极显著提高, 共收获65 吨缢蛏大规格苗, 增殖放流产出比为1: 8.0-9.0, 获得了一定的资源增 殖效果和经济效益。放流期间, 滩涂底泥中的氧化还原电位、硫化物和有机碳等浓度在增殖区Ⅰ区、 Ⅱ区和对照区之间都无显著差异(P>0.05), 但, 底泥中Ⅰ区、Ⅱ区的氧化还原电位平均值分别比对照 区提高了26%和18%, 硫化物浓度平均值分别比对照区降低了45%和34%, 有机碳浓度平均值分别 比对照区下降了5.8%和6.8%, 表明, 缢蛏增殖放流获得了一定的改良底质环境效果。 |
| 关键词: 缢蛏 增殖放流 三沙湾 |
| DOI：10.11693/hyhz20150700193 |
| 分类号: |
| 基金项目:海洋公益性行业科研专项项目, 201205009 号; 国家海洋局海洋经济创新发展区域示范专项, 2012FJ03 号。 |
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| EVALUATION ON JUVENILE SINONOVACULA CONSTRICTA RELEASE FOR STOCK ENHANCEMENT AND SEDIMENT IMPROVEMENT IN SANSHA BAY |
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JIANG Xing-Long1,2, LIN Guo-Qing3, LIAO Bi-Chai3, ZHENG Wei-Gang1,2, HUANG Jian3, DENG Lai-Fu1,2, NI Yi-Lun1,2
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1.Fisheries College, Jimei University, Xiamen 361021, China;2.Engineering Research Center of the Modern Industry Technology for Eel Ministry of Education, Xiamen 361021, China;3.Fujian Fishery Technical Extension Center, Fuzhou 350003, China
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| Abstract: |
| Some 37.47 million juvenile Sinonovacula constricta were released in two batches in Sansha Bay, Fujian, Southeast China, in 2013 and 2014 in Areas Ⅰand Ⅱ (3 ha each) for stock enhancement. By monitoring the growth and biomass of S. constricta and major indicators to bottom environment in sediment, we evaluated the effect of S. constricta release in the bay. The results show that the density and biomass of S. constricta in the two areas of release increased significantly than those of the control, the capture yield reached 65 ton, and the stock input / output ratio was 1 : 8.0-9.0. Therefore, the release action enhanced the stock of S. constricta and increased the profit. On the other hand, no significant difference was observed in the sediment in oxidation-reduction potential, sulfide, and organic carbon concentration among the control and Areas Ⅰand Ⅱ during the experiment (P>0.05). However, the average oxidation-reduction potential in Areas Ⅰand Ⅱ increased by 26% and 18%, sulfide concentration decreased by 45% and 34%, and organic carbon concentration decreased by 5.8% and 6.8%, respectively, than those of the control. Therefore, the release improved the beach sediment environment quality. |
| Key words: Sinonovacula constricta artificial release for stock enhancement Sansha Bay |
