Aquatic Ecotoxicology

Aquatic Ecotoxicology

Ecotoxicology services: aquatic ecotoxicology


Fera laboratories perform the following tests:

OECD 201, 202, 203, 235

Effects on Aquatic Organisms

For the protection of the aquatic environment, it is important that testing assesses each of the trophic levels; primary producers (photosynthetic organisms), primary consumers (herbivores) and secondary consumers (predatory organisms).  For the primary producers, tests are performed that provide the Effective Concentration test statistics (EC10, EC20, EC50) and corresponding No Observed Effect Concentration (NOEC) for the green alga Pseudokirchneriella subcapitata (OECD 201).  Where herbicidal activity is exhibited and a second species is required, the same endpoints are provided for the diatom Navicula pelliculosa.  Where anti-microbial activity is known, a cyanobacterial species such as Anabaena flos-aquae can be used.

For the protection of primary consumers, tests are performed that provide the 24 and 48 hour median Effective Concentration (EC50), and where possible the No Observed Effect Concentration (NOEC) for the cladoceran Daphnia magna (OECD 202)Where an insecticidal mode of action is known or insecticidal activity is exhibited and a second species is required the same endpoints are provided for the dipteran Chironomus riparius (OECD 235).  For the protection of secondary consumers, yet in order to minimise fish testing, a threshold approach is taken and a limit test performed wherever possible, with Oncorhynchus mykiss (OECD 203).

.

Pond Close Up

OECD 210, 211, 218/219/233, 30

Long-term and Chronic Effects

Where exposure of surface water is both likely and long-lasting due to the fate and stability of compounds, it is important that longer term chronic assessments are made for the relevant trophic levels.  For the protection of primary consumers, tests are performed that provide the Effective Concentration test statistics (EC10, EC20) and corresponding No Observed Effect Concentration (NOEC) for reproduction in the cladoceran Daphnia magna (OECD 211).  Where insect growth regulation is known or accumulation in aquatic sediment is indicated, the same endpoints or provided for development of the dipteran Chironomus riparius (OECD 218/219 or OECD 233).

For the protection of secondary consumers (fish), tests are performed that provide the Effective Concentration test statistics (EC10, EC20) and corresponding No Observed Effect Concentration (NOEC) for the Early Life Stage (OECD 210).  Additionally, where bioconcentration is indicated, then relevant BCF and uptake/depuration rate constants are provided (OECD 305).

OECD 221, 238/239

Effects on Aquatic Macrophytes

Primary producers are considered sufficiently protected by the OECD 201 test, unless herbicidal activity or plant growth regulation is known, then tests are performed that provide the Effective Concentration test statistics (EC10, EC20, EC50) and corresponding No Observed Effect Concentration (NOEC) for the macrophyte Lemna minor (OECD 221)Additionally, if there are clear indications of effects on dicotyledons or monocotyledons, the same endpoints are provided for Myriophyllum spicatum (OECD 238/239) or Glyceria maxima respectively.

OECD 229/230 and 234

Endocrine Disrupting Properties

Where the potential for endocrine disruption is considered, tests can be performed according the OECD Conceptual Framework for Testing and Assessment of Endocrine Disruptors at Level 3 and 4, including Screening Assays (OECD 229/230) and Development tests (OECD 234).

For more information on our aquatic ecotoxicology services, please get in touch.


Contact us

Contact our sales team

If you are interested in this service, please complete the short form below and a member of our team will contact you within 2 working days.

Untick this box if you would not like to receive occasional marketing emails from Fera Science.

  • Preferred contact Method:

  • Telephone

We will use the email address provided above to contact you about this service within 2 working days