多室草苔虫幼体光诱导附着机制研究

The bryozoan Bugula neritina is a cosmopolitan fouling species with major impacts on local ecosystems and pharmaceutical application value. Understanding the larval settlement mechanism of B. neritina has important implications for the development of antifouling strategies. Recent studies on the species have been focusing on how chemical and biotic environmental factors, but only very few studies have addressed the importance of light on larval settlement. This proposal focuses on the larval phototactic behavior of B. neritina, with emphasis on the coordination system that mediates phototactic behavior and larval settlement larval photoreceptor system. This proposed research plan covers three major areas, including 1) characterization of the photoreception characters including the larval optical maxima and photosensitivity of the larval photoreceptor system; 2) to determine the role of Nitric oxide in regulating larval phototaxis; and 3) to examine the interaction of nitric oxide and neurotransmitters in mediating larval phototaxis and larval settlement. The project leader has prime experience in larval settlement studies. In collaboration with optic engineers, the research team has great potential to bring further insights into how photoreception can influence larval settlement and thereby inspire the development of new antifouling approach using optical devices.

多室草苔虫是有重要生态及应用价值的海洋底栖动物﹐但同时造成严重的生物污损问题。阐明多室草苔虫幼体附着机制有助开发有效的防污手段。早期研究多集中于理解环境化学和生物因素对多室草苔虫幼虫附着的影响﹐对幼体视觉系统及调控幼虫附着的内部协调机制缺少详细研究。本项目的前期研究发现信息传导分子一氧化氮可调控幼体附着过程。因此，本项目拟详细研究多室草苔虫幼体视觉系统及光诱导幼体附着的机制中﹐一氧化氮的调控功能。本项目具体研究内容涵括三个方面：（1）建立趋光测试系统﹐阐明多室草苔虫幼体视觉系统的感光特征; （2）阐明一氧化氮调控幼体趋光行为的功能;（3）测试一氧化氮与神经传导物的联合作用﹐阐明一氧化氮在光诱导幼体附着机制中的协调功能。项目申请人在研究多室草苔虫幼体附着机理的课题上有丰富经验，结合光学专家团队﹐有望为多室草苔虫幼体附着机理研究课题上作出突破。

多室草苔虫是有重要生态及应用价值的海洋底栖动物﹐但同时造成严重的生物污损问题。.阐明多室草苔虫幼体附着机制有助开发有效的防污手段。早期研究多集中于理解环境化学和生.物因素对多室草苔虫幼虫附着的影响﹐对幼体视觉系统及调控幼虫附着的内部协调机制缺少详.细研究。本项目的前期研究发现信息传导分子一氧化氮可调控幼体附着过程。因此，本项目拟.详细研究多室草苔虫幼体视觉系统及光诱导幼体附着的机制中﹐一氧化氮的调控功能。本项目.具体研究内容涵括三个方面：（1）建立趋光测试系统﹐阐明多室草苔虫幼体视觉系统的感光.特征; （2）阐明一氧化氮调控幼体趋光行为的功能;（3）测试一氧化氮与神经传导物的联合.作用﹐阐明一氧化氮在光诱导幼体附着机制中的协调功能。项目申请人在研究多室草苔虫幼体.附着机理的课题上有丰富经验，结合光学专家团队﹐有望为多室草苔虫幼体附着机理研究课题.上作出突破。