Do microplastic particles affect Daphnia magna at the morphological, life history and molecular level?
Do microplastic particles affect Daphnia magna at the morphological, life history and molecular level?
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DOI：
10.1371/journal.pone.0187590
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发表时间：
2017
期刊：
影响因子：
3.7
通讯作者：
Laforsch C
中科院分区：
文献类型：
--
作者：
Imhof HK;Rusek J;Thiel M;Wolinska J;Laforsch C
微塑料颗粒不仅在海洋中普遍存在，而且在淡水生态系统中也普遍存在。然而，由多种合成聚合物组成的微塑料对淡水生物的影响仍然知之甚少。我们考察了两种聚合物混合物对大型水蚤(三个不同克隆)的形态、生活史和分子水平的影响。在低浓度下(食物颗粒的1%)提供~40μm的微塑料颗粒，导致消化道中平均有~30个颗粒，这反映了较高的微塑料污染，但仍类似于自然情况。没有观察到成体水蚤死亡率增加，形态(体长、体宽和尾棘长度)或生殖参数发生变化。对幼水蚤的分析揭示了形态特征(体长、宽和尾棘长度)的各种微小和相当微妙的反应。对于成年水蚤，暴露48h后，与应激反应相关的基因(即HSP60、HSP70和GST)以及其他与身体功能和身体组成有关的基因(即SERCA)的表达已经发生了变化。我们预计，微塑料的不利影响可能会受到许多额外因素的影响，如颗粒的大小、形状、类型甚至年龄，而实验室检测到的相当弱的影响可能会导致在自然多应激源环境中的适合性降低。
Microplastic particles are ubiquitous not only in marine but also in freshwater ecosystems. However, the impacts of microplastics, consisting of a large variety of synthetic polymers, on freshwater organisms remains poorly understood. We examined the effects of two polymer mixtures on the morphology, life history and on the molecular level of the waterflea Daphnia magna (three different clones). Microplastic particles of ~40 μm were supplied at a low concentration (1% of the food particles) leading to an average of ~30 particles in the digestive tract which reflects a high microplastic contamination but still resembles a natural situation. Neither increased mortality nor changes on the morphological (body length, width and tail spine length) or reproductive parameters were observed for adult Daphnia. The analyses of juvenile Daphnia revealed a variety of small and rather subtle responses of morphological traits (body length, width and tail spine length). For adult Daphnia, alterations in expression of genes related to stress responses (i.e. HSP60, HSP70 & GST) as well as of other genes involved in body function and body composition (i.e. SERCA) were observed already 48h after exposure. We anticipate that the adverse effects of microplastic might be influenced by many additional factors like size, shape, type and even age of the particles and that the rather weak effects, as detected in a laboratory, may lead to reduced fitness in a natural multi-stressor environment.
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影响因子：
3.1
作者：
Altshuler, Ianina;McLeod, Anne M.;Cristescu, Melania E.
通讯作者：
Cristescu, Melania E.
影响因子：
3.7
作者：
Altshuler, Ianina;Vaillant, James J.;Cristescu, Melania E.
通讯作者：
Cristescu, Melania E.
影响因子：
9.2
作者：
Browne, Mark Anthony;Niven, Stewart J.;Thompson, Richard C.
通讯作者：
Thompson, Richard C.
DOI：
10.1126/science.1197761
发表时间：
2011-02-04
期刊：
Science (New York, N.Y.)
影响因子：
--
作者：
Colbourne JK;Pfrender ME;Gilbert D;Thomas WK;Tucker A;Oakley TH;Tokishita S;Aerts A;Arnold GJ;Basu MK;Bauer DJ;Cáceres CE;Carmel L;Casola C;Choi JH;Detter JC;Dong Q;Dusheyko S;Eads BD;Fröhlich T;Geiler-Samerotte KA;Gerlach D;Hatcher P;Jogdeo S;Krijgsveld J;Kriventseva EV;Kültz D;Laforsch C;Lindquist E;Lopez J;Manak JR;Muller J;Pangilinan J;Patwardhan RP;Pitluck S;Pritham EJ;Rechtsteiner A;Rho M;Rogozin IB;Sakarya O;Salamov A;Schaack S;Shapiro H;Shiga Y;Skalitzky C;Smith Z;Souvorov A;Sung W;Tang Z;Tsuchiya D;Tu H;Vos H;Wang M;Wolf YI;Yamagata H;Yamada T;Ye Y;Shaw JR;Andrews J;Crease TJ;Tang H;Lucas SM;Robertson HM;Bork P;Koonin EV;Zdobnov EM;Grigoriev IV;Lynch M;Boore JL
通讯作者：
Boore JL
DOI：
10.1111/j.2517-6161.1995.tb02031.x
发表时间：
1995-01-01
影响因子：
5.8
作者：
BENJAMINI, Y;HOCHBERG, Y
通讯作者：
HOCHBERG, Y