Ecological and Biogeochemical Consequences of Bromoorganics in the Enteropneust, S. Kowalevskyi

大量不同种类的海洋生物积累了 有毒卤代有机化合物的多样性。 然而，无论是生态作用还是生物合成控制， 这些化合物是众所周知的， 除了软体动物和海绵动物以外的生物（多孔动物分类群）。 这 该项目涉及对海底肠呼吸的一项综合研究， 囊舌鱼kowalevskyi，这将建立一些关键的 环境和遗传因素调节的模式， 在这些生物体中的盐有机积累，并提供新的 了解有毒卤代有机物对微生物的影响， 海洋沉积物的地球化学过程 囊舌鱼属 kowalevskyi非常适合这项工作，因为：1）它是一个 潮间带大型底栖动物的共同组成部分; 2） 其生物学（例如，进食、消化、繁殖、排泄） #21453;的影响;（3）对新？ 沉积在潮间带的有机物。 另外这款 研究将有助于建立一个模型，为二次产品 与目前接受的基于以下因素的模型不同的累积 对软体动物和海绵的研究。

A large and diverse number of marine organisms accumulate a remarkable diversity of toxic halogenated organic compounds. However, neither the ecological roles nor biosynthetic controls of these compounds are well understood and this is especially true for organisms other than molluscs and sponges (poriferan taxa). This project involves a synoptic study of the benthic enteropneust, Saccoglossus kowalevskyi, which will establish some of the key environmental and genetic factors which regulate patterns of haloorganic accumulation in these organisms, and provide new insights on the effects of toxic haloorganics on microorganisms and biogeochemical processes in marine sediments. Saccoglossus kowalevskyi is ideally suited for this work since: 1) it is a common component of the intertidal macrofauna; 2) many aspects of its biology (e.g., feeding, digestion, reproduction, excretion) are well characterized; 3) it has a significant impact on freshly- deposited organic matter in the intertidal zone. In addition, this research will help establish a model for secondary product accumulation that differs from currently accepted models based on studies of molluscs and sponges.