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Diss Factsheets

Ecotoxicological information

Toxicity to terrestrial arthropods

Currently viewing:

Administrative data

toxicity to non-target arthropods on inert substrate (NTA other than pollinators)
Type of information:
experimental study
Adequacy of study:
supporting study
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: No raw data available
Cross-referenceopen allclose all
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study

Data source

Reference Type:
Efecto teratogénico y toxico de ácidos grasos de cadena corta insaturados, en Rhodnius proxilus
Gomez I.
Bibliographic source:
Mem. Inst. Oswaldo Cruz, Rio de Janeiro, Vol 80(4), 375 - 385, 1985

Materials and methods

Principles of method if other than guideline:
Larvae of the assassin bug in different developmental stages were treated with the test item.
Application method:
other: contact via treated surface (filter paper) and topical application using a micro syringe

Test material

Constituent 1
Chemical structure
Reference substance name:
Undec-10-enoic acid
EC Number:
EC Name:
Undec-10-enoic acid
Cas Number:
Molecular formula:
undec-10-enoic acid
Specific details on test material used for the study:
Details on properties of test surrogate or analogue material (migrated information):
No data

Sampling and analysis

Analytical monitoring:
Details on sampling:
No data

Test substrate

Details on preparation and application of test substrate:
No data

Test organisms

Test organisms (species):
other: Rhodinus proxilus
Animal group:
other: Hemiptera
Details on test organisms:
Supplier: Laboratorio Parasitologia de la Facultad de Farmacia, U.C.V., Caracas, Venezuela

Study design

Study type:
laboratory study
Limit test:
Post exposure observation period:
Up to the finalisation of the development of larvae to the adult stage.

Test conditions

Test temperature:
24 ± 4°C
pH (if soil or dung study):
No data
Photoperiod and lighting:
No data
Details on test conditions:
Test container: Glass vessels (200 mL) containing folded filter paper and closed with a lid with a mesh for ventilation.
Nominal and measured concentrations:
No data
Reference substance (positive control):

Results and discussion

Details on results:
No data
Results with reference substance (positive control):
No data
Reported statistics and error estimates:
No data

Any other information on results incl. tables

No data

Applicant's summary and conclusion

Validity criteria fulfilled:
not applicable
Executive summary:

Undecylenic acid induced rather teratogenic but primarily lethal effects when applied to 1st instar larvae of Rhodnius proxilus at doses between 0.1 and 1 µL/larva via topical application or 100 µL via contact exposure. Teratogenic effects, if apparent, occurred only at those dosages which caused also significant mortality. There were no differences in the effects irrespective whether hungry or feeded larvae were used. Eggs of the bug were not affected at treatment doses of 5, 10 and 20 µL of undecylenic acid.