Skip to main content
Journal cover image

Life history responses of Daphnia similoides simultaneously exposed to microcystin-LR and ammonia and their postexposure recovery.

Publication ,  Journal Article
Cao, H; Lyu, K; Xiang, F; Yang, Z
Published in: Environmental toxicology and chemistry
November 2014

Aquatic organisms often suffer episodic stress from cyanobacterial bloom-derived concomitants and sometimes interactive stressors, and they may recover when stressors terminate. To assess whether exposed Daphnia can quickly recover from combined toxicity of bloom-derived stressors, Daphnia similoides were exposed to mixtures of ammonia (0 mg L(-1) , 0.37 mg L(-1) , and 0.58 mg L(-1) ) and dissolved microcystin-LR (0 µg L(-1) , 10 µg L(-1) , 30 µg L(-1) , and 100 µg L(-1) ) in a full factorial design for 14 d and subsequently allowed to recover for 7 d. During the exposure, the mixtures of ammonia and microcystin-LR showed different effects on the selected variables. Ammonia delayed the time to maturation, but microcystin-LR was not negative to the development of the tested daphnids. Furthermore, microcystin-LR reduced the prolonged developmental time to first eggs and first clutch caused by high ammonia. The total reproduction of D. similoides was dramatically reduced by 64% to 79% by both toxicants and their combinations, but there were no interactive effects. After the recovery period, organisms under most treatments did not recover completely from the combined stress but showed positive signs of recovery, based on the size of the last clutch and the mean number of clutches during recovery; thus the affected D. similoides have the potential to quickly recover from the combined toxic stressors.

Duke Scholars

Altmetric Attention Stats
Dimensions Citation Stats

Published In

Environmental toxicology and chemistry

DOI

EISSN

1552-8618

ISSN

0730-7268

Publication Date

November 2014

Volume

33

Issue

11

Start / End Page

2497 / 2505

Related Subject Headings

  • Time Factors
  • Reproduction
  • Microcystins
  • Marine Toxins
  • Life Cycle Stages
  • Female
  • Environmental Sciences
  • Environmental Monitoring
  • Daphnia
  • Cyanobacteria
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Cao, H., Lyu, K., Xiang, F., & Yang, Z. (2014). Life history responses of Daphnia similoides simultaneously exposed to microcystin-LR and ammonia and their postexposure recovery. Environmental Toxicology and Chemistry, 33(11), 2497–2505. https://doi.org/10.1002/etc.2701
Cao, Huansheng, Kai Lyu, Fuhui Xiang, and Zhou Yang. “Life history responses of Daphnia similoides simultaneously exposed to microcystin-LR and ammonia and their postexposure recovery.Environmental Toxicology and Chemistry 33, no. 11 (November 2014): 2497–2505. https://doi.org/10.1002/etc.2701.
Cao H, Lyu K, Xiang F, Yang Z. Life history responses of Daphnia similoides simultaneously exposed to microcystin-LR and ammonia and their postexposure recovery. Environmental toxicology and chemistry. 2014 Nov;33(11):2497–505.
Cao, Huansheng, et al. “Life history responses of Daphnia similoides simultaneously exposed to microcystin-LR and ammonia and their postexposure recovery.Environmental Toxicology and Chemistry, vol. 33, no. 11, Nov. 2014, pp. 2497–505. Epmc, doi:10.1002/etc.2701.
Cao H, Lyu K, Xiang F, Yang Z. Life history responses of Daphnia similoides simultaneously exposed to microcystin-LR and ammonia and their postexposure recovery. Environmental toxicology and chemistry. 2014 Nov;33(11):2497–2505.
Journal cover image

Published In

Environmental toxicology and chemistry

DOI

EISSN

1552-8618

ISSN

0730-7268

Publication Date

November 2014

Volume

33

Issue

11

Start / End Page

2497 / 2505

Related Subject Headings

  • Time Factors
  • Reproduction
  • Microcystins
  • Marine Toxins
  • Life Cycle Stages
  • Female
  • Environmental Sciences
  • Environmental Monitoring
  • Daphnia
  • Cyanobacteria