Nouvelle déclaration d'incident
No de la demande: 2022-1214
Numéro de référence du titulaire d'homologation: M-800905-01-1
Nom du titulaire (nom légal complet, aucune abbréviation): Bayer CropScience Inc.
Adresse: Suite 200, 160 Quarry Park Boulevard SE
Ville: CALGARY
État: AB
Pays: Canada
Code postal /Zip: T2C 3G3
Étude scientifique
ARLA No d'homologation 19204 ARLA No de la demande d'homologation EPA No d'homologation.
Nom du produit: Phenmedipham TC
Inconnu
Inconnu
Titre Phenmedipham: Fish Short-Term Reproduction Assay with the FatheadMinnow (Pimephales promelas)
Date 31-JAN-22
Non
Nouveau danger pour la santé ou pour l'environnement
Statistical analysis concluded that there was a treatment-related effect observed on fecundity, in terms of the cumulative number of eggs produced and the number of eggs produced per female per reproductive day, at the 0.176 mg phenmedipham+MHPC/L (0.0956 mg phenmedipham/L) treatment level compared to the control. This appears to be lower than the current chronic 28-day fish LOEC for fry survival (0.181 mg phenmedipham+MHPC/L), thus would meet the criteria for adverse effects reporting [Matlock, et. al. 2014; Early Life Stage Toxicity of Phenmedipham to the Rainbow Trout (Oncorhynchus mykiss) Under Flow-Through Conditions]. However, this study is not considered appropriate for assessing chronic risk to fish for 2 reasons. First, this study is an endocrine screening study. Second, there are a limited number of test concentrations employed and a specific dose-spacing factor and these constraints do not provide for the type of dose-response analysis that lends to a robust risk assessment endpoint.
Non
The fish short-term reproduction assay was conducted to meet endocrine testing requirements for active ingredients in the European Union. The study met reportability criteria under Canadian adverse effects reporting guidelines.