Biogenic bromophenols as negative recruitment cues
Biogenic bromophenols as negative recruitment cues
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生物源溴酚作为负招募线索
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
D. Lincoln
中科院分区：
文献类型：
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作者：
S. Woodin;S. Lindsay;D. Lincoln
内动物群极大地改变了它们所生活的沉积物。一种形式的修饰是通过生物体的分泌物发生的。在许多多毛类和半索动物科中，蠕虫的分泌物包括卤代芳香族化合物，例如溴酚。为了确定此类化合物的存在如何影响幼年动物群，我们直接将合成溴酚添加到现场浓度的天然沉积物中，并观察了最近定居的 2 种双壳类和 1 种多毛类幼体的反应。在自然界中，溴苯酚由甲壳多毛动物分泌到沉积物中。相当大比例的双壳贝幼体（50％和67％）没有钻入实验性受溴酚污染的沉积物中，而所有双壳贝幼体都钻入对照沉积物中。沙环多毛类幼体在实验污染的沉积物中挖洞，但这些幼体在污染沉积物中的挖洞速度明显慢于对照沉积物。因此，沉积物中添加溴酚对所有 3 个物种新定居的幼体对沉积物的接受程度产生显着的负面影响。这些结果与此类分泌物决定具有卤代芳香族化合物生物源生产者的区域中的组合物组成的概念是一致的。
Infauna greatly modify the sediments in which they live. One form of modification occurs via the organisms' secretions. In a number of families of Polychaeta and Hemichordata, the worms' secretions include halogenated aromatic compounds such a s bromophenols. To determine how the presence of such compounds affects luvenile infauna, we directly added synthetic bromophenols to natural sediments at field concentrations and observed the responses of recently settled juveniles of 2 bivalve and 1 polychaete specles. In nature the bromophenols are secreted into sed~ments by a capitellid polychaete. A significant percentage of the bivalve juveniles (50 and 67%) did not burrow Into the s e d ~ n ~ e n t s experimentally contaminated w ~ t h bromophenols, w h ~ l e all the bivalve juveniles burrowed into the control sediments. The arenicolid polychaete juveniles burrowed into the experimentally contaminated sediments, but the rate of burrowing of these juveniles was significantly slower in the contamlnated sediments than in the control sediments The addi t~on of bromophenols to sediments, therefore, had a slgn~ficantly negative effect on acceptance of the sediment by recently settled juveniles of all 3 species. These results are consistent with the concept of such secretions determining the composition of assemblages in areas with biogenic producers of haloaromatic compounds.