Effects of elutriates from contaminated coastal sediments on different life cycle phases of planktonic diatoms.
Effects of elutriates from contaminated coastal sediments on different life cycle phases of planktonic diatoms.
复制标题
DOI：
10.1016/j.marenvres.2020.104890
复制
发表时间：
2020-03
影响因子：
3.3
通讯作者：
A. Pelusi;F. Rotolo;A. Gallo;M. Ferrante;M. Montresor
中科院分区：
文献类型：
--
作者：
A. Pelusi;F. Rotolo;A. Gallo;M. Ferrante;M. Montresor
我们利用在坎帕尼亚海岸（意大利第勒尼安海）被污染的Bagnoli-Coroglio湾三个站点收集的沉积物中经常出现的三种浮游硅藻(pseudonitzschia multistriata，P.；arenysensisandChaetocerossocialis。具体地说，我们在假设污染物会损害有性生殖的情况下，测试了异生殖假nitzschiia种的有性阶段的产生。我们还测试了ofC孢子的播种能力。假定污染物会影响休眠阶段发芽的能力，在洗脱液中储存长达6个月后。56号站的洗脱液，污染物浓度最高，损害了生长、有性繁殖和孢子萌发。与对照相比，25站和84站的洗脱液对伪尼齐亚斯的生长和有性繁殖有中等程度的促进作用，对孢子的播种量也有中等程度的影响。
We assessed the effects of elutriates from sediments collected at three stations in the polluted Bay of Bagnoli-Coroglio along the Campania coast (Tyrrhenian Sea, Italy) using three planktonic diatoms regularly occurring in the area,Pseudo-nitzschia multistriata,P. arenysensisandChaetocerossocialis. Specifically, we tested the production of sexual stages in the heterothallicPseudo-nitzschiaspecies with the hypothesis that pollutants could impair sexual reproduction. We also tested the seeding capacity of spores ofC. socialisafter up to six months of storage in elutriates, assuming that pollutants could affect the capability of resting stages to germinate. Elutriate from station 56, with the highest concentrations of pollutants, impaired growth, sexual reproduction and spore germination. Elutriates from stations 25 and 84 caused moderate enhancement of growth and sexual reproduction inPseudo-nitzschiaas compared with control conditions, and also had intermediate effect on spore seeding capacity.