首页 | 本学科首页   官方微博 | 高级检索  
     检索      

The hydrogen peroxide impact on larval settlement and metamorphosis of abalone Haliotis diversicolor supertexta
作者姓名:张祥景  杨志会  蔡中华
作者单位:Graduate School at Shenzhen,Tsinghua University,Shenzhen 518055,China
基金项目:国家自然科学基金,广东省深圳市科技计划,Longgang Aquaculture Bureau of Shenzhen
摘    要:Abalone Haliotis diversicolor supertexta is an important economic mollusk.The settlement and metamorphosis are two critical stages during its development period,which has direct influence on abalone survival and production.The influence of reactive oxygen species(hydrogen peroxide) on abalone embryo and juvenile development were examined in this study.Larvae of Haliotis diversicolor supertexta were induced to settlement and metamorphose by exposure to seawater supplemented with hydrogen peroxide.They had the best performance at 800 μmol/L.The concentration of 1 000 μmol/L or higher was toxic to the larvae,as the larvae could settle down only at benthic diatom plates without complete metamorphosis.In addition,H2O2 adding time was critical to the larval performance.24h after two-day post-fertilization was proved to be the optimal adding time.In this paper,two action mechanisms of hydrogen peroxide are discussed:(1) hydrogen peroxide has direct toxicity to ciliated cells,thus cause apoptosis;(2) hydrogen peroxide,as a product from catecholamines' autoxidation process in vivo,can reverse this process to produce neuro-transmitters to induce abalone metamorphosis.

关 键 词:过氧化氢  鲍鱼  变态现象  沉降现象

The hydrogen peroxide impact on larval settlement and metamorphosis of abalone Haliotis diversicolor supertexta
ZHANG Xiangjing,YANG Zhihui,CAI Zhonghua Graduate School at Shenzhen,Tsinghua University,Shenzhen ,China.The hydrogen peroxide impact on larval settlement and metamorphosis of abalone Haliotis diversicolor supertexta[J].Chinese Journal of Oceanology and Limnology,2008,26(3).
Authors:ZHANG Xiangjing  YANG Zhihui  CAI Zhonghua Graduate School at Shenzhen  Tsinghua University  Shenzhen  China
Institution:Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
Abstract:Abalone Haliotis diversicolor supertexta is an important economic mollusk. The settlement and metamorphosis are two critical stages during its development period, which has direct influence on abalone survival and production. The influence of reactive oxygen species (hydrogen peroxide) on abalone embryo and juvenile development were examined in this study. Larvae of Haliotis diversicolor supertexta were induced to settlement and metamorphose by exposure to seawater supplemented with hydrogen peroxide. They had the best performance at 800 μmol/L. The concentration of 1 000 μmol/L or higher was toxic to the larvae, as the larvae could settle down only at benthic diatom plates without complete metamorphosis. In addition, H2O2 adding time was critical to the larval performance. 24h after two-day post-fertilization was proved to be the optimal adding time. In this paper, two action mechanisms of hydrogen peroxide are discussed: (1) hydrogen peroxide has direct toxicity to ciliated cells, thus cause apoptosis; (2) hydrogen peroxide, as a product from catecholamines' autoxidation process in vivo, can reverse this process to produce neuro-transmitters to induce abalone metamorphosis.
Keywords:Haliotis diversicolor supertexta  hydrogen peroxide  settlement  metamorphosis
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号