| 菲对日本虎斑猛水蚤摄食、生长发育和繁殖的影响 |
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| 引用本文： | 李连旭,王军,李旋,王东,汝少国.菲对日本虎斑猛水蚤摄食、生长发育和繁殖的影响[J].中国海洋大学学报(自然科学版),2022,52(3):80-87. |
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| 作者姓名： | 李连旭 王军 李旋 王东 汝少国 |
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| 作者单位： | 中国海洋大学海洋生命学院,山东 青岛 266003 |
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| 基金项目： | 国家重点研究发展计划项目(2018YFC1407603);中央高校基本科研业务费项目(201964025)资助。 |
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| 摘 要： | 为探究多环芳烃(Polycyclic aromatic hydrocarbons,PAHs)污染对海洋桡足类的毒性效应,本研究以日本虎斑猛水蚤(Tigriopus japonicus)为受试生物,选取菲(Phenanthrene,Phe)作为PAHs的代表开展暴露试验。急性毒性试验测得Phe对日本虎斑猛水蚤的96 h半数致死浓度为3.675 mg/L。慢性试验显示,5、50和500μg/L Phe暴露降低了日本虎斑猛水蚤的比生长速率、延长了从无节幼体发育到成体的时间,并且显著降低了挂卵率;50μg/L Phe暴露降低了总产幼数量、延长了卵囊发育时间,而在500μg/L Phe暴露组则未出现挂卵现象,导致生殖失败。将5和50μg/L Phe暴露后雌蚤产出的F1子代在清水中培养,它们的发育时间也出现显著延迟。此外,50和500μg/L Phe显著降低了日本虎斑猛水蚤的摄食率和滤水率,而呼吸率在各暴露组均出现显著下降。可见,Phe会对日本虎斑猛水蚤的摄食、生长、繁殖,以及子代发育造成明显的毒性效应。本研究可为评价PAHs对海洋浮游动物的生态风险提供数据支持。
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| 关 键 词： | 日本虎斑猛水蚤 菲 摄食 生长发育 繁殖 |
Effects of Phenanthrene on Feeding,Growth and Reproduction of Tigriopus japonicus |
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| Li Lianxu,Wang Jun,Li Xuan,Wang Dong,Ru Shaoguo.Effects of Phenanthrene on Feeding,Growth and Reproduction of Tigriopus japonicus[J].Periodical of Ocean University of China,2022,52(3):80-87. |
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| Authors: | Li Lianxu Wang Jun Li Xuan Wang Dong Ru Shaoguo |
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| Institution: | (College of Marine Life, Ocean University of China, Qingdao 266003, China) |
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| Abstract: | In order to explore the toxic effects of polycyclic aromatic hydrocarbons(PAHs)on marine copepods,this study chose Tigriopus japonicus as the test organism and phenanthrene(Phe)as the representative PAHs to conduce exposure experiments.The acute toxicity test measured the 96 h median lethal concentration of Phe against T.japonicus was 3.675 mg/L.The chronic experiments showed that 5,50,and 500μg/L Phe significantly reduced the specific growth rate,prolonged the time from anarchy larvae to adults,and decreased the egg-laying rate of T.japonicus.Moreover,50μg/L Phe reduced the total number of juveniles and prolonged the egg sac development time,and no egg produced in 500μg/L Phe exposure group,which resulted in reproductive failure.The F1 offspring produced by females exposed to 5 and 50μg/L Phe were cultured in clear water,and their development time was also significantly delayed.In addition,50 and 500μg/L Phe significantly reduced the feeding rate and filtration rate of T.japonicus,and the respiration rate was decreased in all exposure groups.Therefore,Phe had obvious toxic effects on feeding,growth,reproduction and offspring development of T.japonicus.This study could provide references for the evaluation of the ecological risk of PAHs on marine zooplankton. |
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| Keywords: | Tigriopus japonicus phenanthrene ingestion growth and development reproduction |
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