The Chemical Ecology of Shallow-Water Antarctic Marine Invertebrates

南极浅水海洋无脊椎动物的化学生态学

基本信息

批准号：
9526610
负责人：
Bill Baker
金额：
$ 20.04万
依托单位：
Florida Institute of Technology
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1996
资助国家：
美国
起止时间：
1996-04-15 至 1999-03-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9526610&HistoricalAwards=false
关键词：
Chemical Ecology Shallow Water Antarctic

项目摘要

9526610 Baker The proposed research program is a continuation of an interdisciplinary approach to chemical ecology. The objectives in a broad sense are the characterization and quantification of chemically mediated ecological relationships among antarctic benthic invertebrates. There are several specific objectives to investigate during two field seasons. Research will involve an evaluation of chemical defenses in adult antarctic marine invertebrates and also early life history stages. Investigators will evaluate lecithotrophic eggs, embryos and larvae for bioactivity. This is particularly relevant as many Antarctic invertebrates broadcast conspicuous lecithotrophic embryos and larvae which require two to six months to develop while in the plankton. It has been observed that colored sponges use their pigments as defensive agents, and their functional role will be investigated in sponges and in other colored invertebrates. Furthermore, bioactive metabolite concentration and sequestration will be investigated in invertebrates from which secondary metabolites have been isolated. And finally work will continue on the isolation and characterization of bioactive compounds from invertebrates for the purpose of evaluating their functional role. Significant aspects of the research are the use of ecologically relevant bioassays to guide the isolation, on-site at McMurdo Station, of the active chemical agents, and subsequent characterization of those metabolites at our home institutions. In summary, the proposed program will make a significant contribution to the understanding of the nature and role of bioactive agents in the ecology of the Antarctic marine benthos.

9526610面包师提出的研究计划是化学生态学跨学科方法的延续。从广义上讲，目标是对南极无脊椎动物化学介导的生态关系的表征和定量。在两个田间季节中，有几个具体的目标需要调查。研究将涉及对成年南极海洋无脊椎动物以及早期生活史阶段的化学防御措施的评估。研究人员将评估嗜嗜性卵，胚胎和幼虫的生物活性。这尤其重要，因为许多南极无脊椎动物广播了明显的小嗜性胚胎和幼虫，这些胚胎需要在浮游生物中开发两个到六个月。已经观察到有色海绵将其颜料用作防御剂，其功能作用将在海绵和其他有色无脊椎动物中进行研究。此外，将在无脊椎动物中研究生物活性代谢产物浓度和隔离，从中分离出二级代谢产物。最后，将继续进行与无脊椎动物的生物活性化合物的隔离和表征，以评估其功能作用。这项研究的重要方面是使用与生态相关的生物测定物来指导麦克默多站现场的活性化学剂现场隔离，并随后在我们的家庭机构中对这些代谢产物进行表征。总而言之，拟议的计划将对理解生物活性剂在南极海洋生态学中的性质和作用的理解做出重大贡献。