Unknown

Dataset Information

0

CO2-induced pH reduction increases physiological toxicity of nano-TiO2 in the mussel Mytilus coruscus.


ABSTRACT: The increasing usage of nanoparticles has caused their considerable release into the aquatic environment. Meanwhile, anthropogenic CO2 emissions have caused a reduction of seawater pH. However, their combined effects on marine species have not been experimentally evaluated. This study estimated the physiological toxicity of nano-TiO2 in the mussel Mytilus coruscus under high pCO2 (2500-2600??atm). We found that respiration rate (RR), food absorption efficiency (AE), clearance rate (CR), scope for growth (SFG) and O:N ratio were significantly reduced by nano-TiO2, whereas faecal organic weight rate and ammonia excretion rate (ER) were increased under nano-TiO2 conditions. High pCO2 exerted lower effects on CR, RR, ER and O:N ratio than nano-TiO2. Despite this, significant interactions of CO2-induced pH change and nano-TiO2 were found in RR, ER and O:N ratio. PCA showed close relationships among most test parameters, i.e., RR, CR, AE, SFG and O:N ratio. The normal physiological responses were strongly correlated to a positive SFG with normal pH and no/low nano-TiO2 conditions. Our results indicate that physiological functions of M. coruscus are more severely impaired by the combination of nano-TiO2 and high pCO2.

SUBMITTER: Hu M 

PROVIDER: S-EPMC5215630 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature

altmetric image

Publications

CO<sub>2</sub>-induced pH reduction increases physiological toxicity of nano-TiO<sub>2</sub> in the mussel Mytilus coruscus.

Hu Menghong M   Lin Daohui D   Shang Yueyong Y   Hu Yi Y   Lu Weiqun W   Huang Xizhi X   Ning Ke K   Chen Yimin Y   Wang Youji Y  

Scientific reports 20170105


The increasing usage of nanoparticles has caused their considerable release into the aquatic environment. Meanwhile, anthropogenic CO<sub>2</sub> emissions have caused a reduction of seawater pH. However, their combined effects on marine species have not been experimentally evaluated. This study estimated the physiological toxicity of nano-TiO<sub>2</sub> in the mussel Mytilus coruscus under high pCO<sub>2</sub> (2500-2600 μatm). We found that respiration rate (RR), food absorption efficiency (A  ...[more]

Similar Datasets

| S-EPMC6018417 | biostudies-literature
| S-EPMC4778646 | biostudies-literature
| S-EPMC7806842 | biostudies-literature
| S-EPMC3431879 | biostudies-literature
| S-EPMC6841970 | biostudies-literature
| S-EPMC8481496 | biostudies-literature
| S-EPMC5343010 | biostudies-literature
| S-EPMC9965057 | biostudies-literature
| S-EPMC4303858 | biostudies-literature
| PRJNA689255 | ENA