Effect of grazing-mediated dimethyl sulfide (DMS) production on the swimming behavior of the copepod Calanus helgolandicus.
Effect of grazing-mediated dimethyl sulfide (DMS) production on the swimming behavior of the copepod Calanus helgolandicus.
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DOI：
10.3390/md11072486
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发表时间：
2013-07-15
期刊：
影响因子：
5.4
通讯作者：
Steinke M
中科院分区：
文献类型：
--
作者：
Breckels MN;Bode NW;Codling EA;Steinke M
化学相互作用在海洋食物网生态学中发挥着重要作用。二甲基硫（DMS）是一种普遍存在的海洋痕量气体，作为一种生物活性化合物，通过引发包括桡足类Temora longicornis在内的一系列海洋类群的觅食行为。微型浮游动物吃浮游植物后，二甲硫醚的产生会迅速增加。在这里，我们调查是否放牧诱导的DMS elteran增加在桡足类哲水蚤helgolandicus的觅食行为。我们开发了一种半自动化的方法来量化放牧介导的DMS的时间预算拴系女性分配到缓慢的游泳，通常与喂养的比例的影响。汇总数据显示，高（23.6 ± 9.74%）和低（29.1 ± 18.33%）DMS处理之间分配给慢游的25 min时间预算比例无差异。然而，个体桡足类的行为反应之间存在高度的变异性。我们讨论了需要更详细的物种特异性研究的桡足类在不同的空间尺度上的化学信号的个体水平的反应，以提高我们的理解桡足类和他们的猎物之间的化学相互作用。
Chemical interactions play a fundamental role in the ecology of marine foodwebs. Dimethyl sulfide (DMS) is a ubiquitous marine trace gas that acts as a bioactive compound by eliciting foraging behavior in a range of marine taxa including the copepod Temora longicornis. Production of DMS can rapidly increase following microzooplankton grazing on phytoplankton. Here, we investigated whether grazing-induced DMS elicits an increase in foraging behavior in the copepod Calanus helgolandicus. We developed a semi-automated method to quantify the effect of grazing-mediated DMS on the proportion of the time budget tethered females allocate towards slow swimming, typically associated with feeding. The pooled data showed no differences in the proportion of the 25 min time budget allocated towards slow swimming between high (23.6 ± 9.74%) and low (29.1 ± 18.33%) DMS treatments. However, there was a high degree of variability between behavioral responses of individual copepods. We discuss the need for more detailed species-specific studies of individual level responses of copepods to chemical signals at different spatial scales to improve our understanding of chemical interactions between copepods and their prey.
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影响因子：
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