Temperature and clone-dependent effects of microplastics on immunity and life history in Daphnia magna.
Temperature and clone-dependent effects of microplastics on immunity and life history in Daphnia magna.
复制标题
微塑料对大型溞免疫和生活史的温度和克隆依赖性影响。
DOI：
10.1016/j.envpol.2019.113178
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Sadler DE
中科院分区：
文献类型：
--
作者：
Sadler DE
微塑料（MP）污染对许多水生生物来说是一个潜在的主要威胁。然而，我们目前所知甚少的机制，负责的影响，小MP的表型，以及在何种程度上的影响，MP被修改的遗传和环境因素。采用多变量方法，我们研究了500 nm聚苯乙烯微球对8个淡水枝角类动物Daphnia magnared在两种温度下（18 °C/24 °C）的生活史和免疫力的影响。MP暴露改变了我们研究的一半克隆的多变量表型，但对其他克隆没有影响。在受影响的克隆中，暴露于MP的个体在两种温度下都有较小的后代，而在高温下有更多的后代。MP暴露反应的差异与颗粒摄取的差异无关，而是与血细胞的上调有关，特别是在高温下。我们的研究结果具有克隆特异性和环境依赖性，这表明将遗传变异和环境背景纳入塑料颗粒暴露影响评估的重要性。我们的研究结果确定免疫力作为一个重要的机制，支持MP污染的遗传变量的反应，并可能有重大影响，预测MP污染的后果。
Microplastic (MP) pollution is potentially a major threat to many aquatic organisms. Yet we currently know very little about the mechanisms responsible for the effects of small MPs on phenotypes, and the extent to which effects of MPs are modified by genetic and environmental factors. Using a multivariate approach, we studied the effects of 500 nm polystyrene microspheres on the life history and immunity of eight clones of the freshwater cladoceranDaphnia magnareared at two temperatures (18 °C/24 °C). MP exposure altered multivariate phenotypes in half of the clones we studied but had no effect on others. In the clones that were affected, individuals exposed to MPs had smaller offspring at both temperatures, and more offspring at high temperature. Differences in response to MP exposure were unrelated to differences in particle uptake, but were instead linked to an upregulation of haemocytes, particularly at high temperature. The clone-specific, context-dependent nature of our results demonstrates the importance of incorporating genetic variation and environmental context into assessments of the impact of plastic particle exposure. Our results identify immunity as an important mechanism underpinning genetically variable responses to MP pollution and may have major implications for predicting consequences of MP pollution.
登录
查看更多内容
影响因子：
3.7
作者：
Imhof HK;Rusek J;Thiel M;Wolinska J;Laforsch C
通讯作者：
Laforsch C
宿主-寄生虫和基因型-环境相互作用：温度改变灭菌病原体选择的潜力
影响因子：
11.6
作者：
S. E. Mitchell;Emily S. Rogers;T. Little;A. Read
通讯作者：
A. Read
影响因子：
3.3
作者：
Jansen, Mieke;Stoks, Robby;de Meester, Luc
通讯作者：
de Meester, Luc
影响因子：
11.4
作者：
Cole, Matthew;Lindeque, Pennie;Galloway, Tamara S.
通讯作者：
Galloway, Tamara S.
影响因子：
2.1
作者：
Vale PF;Little TJ
通讯作者：
Little TJ