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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Do effects of ultraviolet radiation on microbial films have indirect effects on larval attachment of the barnacle Balanus amphitrite?
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Do effects of ultraviolet radiation on microbial films have indirect effects on larval attachment of the barnacle Balanus amphitrite?

机译：紫外线对微生物膜的影响是否间接影响藤壶Balanus闪石的幼虫附着？

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摘要

We have examined the indirect effects of UV-A and UV-B on cypris attachment of the barnacle Balanus amphitrite Darwin through their effects on microbial films. Specifically, we tested the hypothesis that both UV-A and UV-B radiation can indirectly affect the larval attachment of barnacles by altering the microbial film bioactivity. Microbial films were developed from mid-intertidal region (～1 m above Mean Low Water Level) for 6 days and subjected to ambient levels of ultraviolet radiation. Response of cyprids to untreated and UV-treated microbial films was investigated using double-dish still water choice bioassay. Results showed that both UV-A and UV-B caused a decrease in the percentage of respiring bacterial cells in microbial films and this effect increased with UV energy. With the same UV energy, UV-B caused a greater decrease in respiring bacterial cells than UV-A. However, despite strong UV radiation, the bioactivities of microbial films (i.e., stimulation of cypris attachment) remain unchanged. Results of this study suggest that increased UV radiation, which might occur due to ozone depletion, may not significantly affect the barnacle recruitment by means of affecting the inductive larval attachment cues of microbial films.
机译：我们已经检查了UV-A和UV-B对藤壶Balanus amphitrite达尔文的塞浦路斯附着的间接影响，其原因是它们对微生物膜的影响。具体来说，我们测试了以下假设：UV-A和UV-B辐射均可通过改变微生物膜的生物活性而间接影响藤壶的幼虫附着。从潮间带中部区域（平均低水位以上约1 m）显影了6天的微生物膜，然后将其置于环境水平的紫外线辐射下。使用双碟静止水选择生物测定法研究了塞浦路斯人对未经处理和经紫外线处理的微生物膜的反应。结果表明，UV-A和UV-B都导致微生物膜中呼吸细菌细胞的百分比降低，并且这种作用随UV能量的增加而增加。在紫外线能量相同的情况下，紫外线B导致的呼吸细菌细胞减少幅度要大于紫外线A。然而，尽管强烈的紫外线辐射，微生物膜的生物活性（即，刺激丝囊附着）仍保持不变。这项研究的结果表明，可能由于臭氧消耗而引起的紫外线辐射增加，可能不会通过影响微生物膜的诱导性幼虫附着线索而显着影响藤壶的募集。

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