| 引用本文： |
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付志璐,上真一,皮玲.饥饿和水温对海月水母碟状幼体游泳能力的影响[J].广西科学院学报,2016,32(4):263-266. [点击复制]
- FU Zhilu,UYE Shin-ichi,PI Ling.Effects of Starvation and Temperature on Swimming Ability of Ephyrae of the Scyphozoan,Aurelia aurita s. l.[J].Journal of Guangxi Academy of Sciences,2016,32(4):263-266. [点击复制]
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| 摘要: |
| [目的]研究饥饿持续时间和水温对海月水母Aurelia aurita碟状幼体游泳能力的影响,探讨游泳能力对碟状幼体种群生存和生长的影响。[方法]将刚刚释放的海月水母碟状幼体分别置于9曟,12曟和15曟下,每个温度下放置20只,并使其保持饥饿。每隔10 d测量1次碟状幼体的拍动速度。[结果]碟状幼体的最大平均拍动速度为49.3次·min-1。在长达50 d的饥饿时间内,饥饿持续时间对碟状幼体拍动速度的影响极显著(P<0.01),而温度及饥饿持续时间交互作用对拍动速度的影响不显著(P>0.05)。在饥饿10~20 d后,碟状幼体的拍动速度显著加快,然而当饥饿时间进一步延长时,拍动速度也随之下降。[结论]海月水母碟状幼体的最大游泳速度为8.9 cm·min-1。碟状幼体主要食物为藤壶Barnacle幼体、轮虫Rotifers及水螅水母Rathkea octopunctata等游泳速度缓慢的浮游动物。碟状幼体的拍动速度在饥饿30 d后开始显著下降,因此严重饥饿的碟状幼体可能更容易被天敌捕食,从而造成自然水域中碟状幼体更高的死亡率。 |
| 关键词: 海月水母 碟状幼体 饥饿 水温 拍动速度 |
| DOI：10.13657/j.cnki.gxkxyxb.20161202.001 |
| 投稿时间：2016-04-18 |
| 基金项目:日本-斯洛文尼亚两国水母交流合作项目资助。 |
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| Effects of Starvation and Temperature on Swimming Ability of Ephyrae of the Scyphozoan,Aurelia aurita s. l. |
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FU Zhilu1,2, UYE Shin-ichi1, PI Ling1,3
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| (1.Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima, Hiroshima-ken, 739-8528, Japan;2.School of Marine Science and Biotechnology, Guangxi University for Nationalities, Nanning, Guangxi, 530008, China;3.School of Architecture Engineering, Xinyu University, Xinyu, Jiangxi, 338004, China) |
| Abstract: |
| [Objective] The effects of temperature and starvation on their pulsation rates were studied.[Methods] Each of 20 newly released Aurelia aurita ephyrae was transferred to 9℃, 12℃ and 15℃,respectively,and kept starved for up to 60 d. Pulsation rate of each ephyra was measured at every 10-day interval.[Results] The results showed that the maximum pulsation rate ofAurelia aurita ephyrae was 49.3 beats·min-1. Over the starvation period up to 50 d, pulsation rates were significant affected by starvation (P <0.01),but they were not affected by temperature and their interactions (P >0.05). The pulsation increased significantly after 10 d and 20 d of starvation,and thereafter decreased.[Conclusion] The maximum swimming speed achieved by Aurelia aurita ephyrae was 8.9 cm · min-1,suggesting that their main prey are confined to slow moving zooplankton such as barnacle nauplii,veliger larvae and hydromedusae. The pulsation rate decreased for ephyrae after 30 d of starvation,and hence the heavily starved ephyrae may be exposed to higher predation loss. |
| Key words: Aurelia aurita ephyrae starvation water temperature pulsation rate |
