文章摘要
王秀华.胶州湾栉孔扇贝大规模死亡的流行病学调查[J].水产学报,2002,26(2):
胶州湾栉孔扇贝大规模死亡的流行病学调查
Epidemiological study on massive death of the cultured scallop Chlamys farreri in the Jiaozhou Bay
投稿时间:2014-04-10  修订日期:2014-04-10
DOI:
中文关键词: 栉孔扇贝 流行病学 胶州湾 死亡率 病理学 高水温期 水环境 病原性 生物因子
英文关键词: Chlamys f arreri  epidemiology  Jiaozhou Bay
基金项目:国家重点基础研究发展计划(973计划)
作者单位地址
王秀华 中国水产科学研究院黄海水产研究所农业部海洋渔业资源可持续利用重点开放实验室 中国水产科学研究院黄海水产研究所农业部海洋渔业资源可持续利用重点开放实验室
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中文摘要:
      2000年1月-12月,跟踪调查了胶州湾养殖栉孔扇贝大规模死亡情况,对养殖海域环境因子进行了测定,并对大规模死亡期间发病栉孔扇贝进行了病理学观察.调查结果显示,胶州湾养殖栉孔扇贝大规模死亡呈暴发性并集中在7月下旬的高水温期.发病高峰期在7月21日至7月27日,最高时点患病率达14.5%,7月份的月死亡率为58.0%.至8月3日累积死亡率达90.0%,患病贝死亡率接近100%.发病期扇贝壳高平均为5.0±0.9cm.,养殖栉孔扇贝半数死亡时间在7月23日.通过对水环境因子、病原性生物因子的调查分析及病理学观察表明,栉孔扇贝的大规模死亡可能是由生物性因子(病毒)所致,而与环境中理化因子可能无直接的相关关系.
英文摘要:
      A survey on the massive death of cultured scallop , Chlamys f arreri was carried out in Jiaozhou Bay in 2000. The environmental factors including salinity, temperature, dissolved oxygen, pH, COD, and NH4+ 2N were investigated , also the pathology of diseased scallop sampled in the period of massive death was studied. The diseasefirst occurred on 6Julyandreacheditspeakstagefrom 21 to 27 July, thensubsidedinthe earlyAugust. The results showed that the cumulative mortality of cultured scallop reached 90. 0 % on 3 August and the monthly highestmortalitywhichnormallyappearedinJulywas 58.0%. Thehighestdailyprevalencewhichoccurredon 24 Julywas 14.5%. Indoorexperimentsprovedthatthe diseasedscallops diedcompletelywithin 2to 3days. The shell height of scallop averaged 5. 0 ±0. 9 cm in the period of massive death. Half of the cultured scallop died on 23 July. The results of investigating and analyzing of the environmental factors , causes of disease and observation of pathology showed that the massive death of scallop was possibly caused by a certain factor of organism such as virus , whereas it has no direct relations with environmental factors.
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