The persistence of emamectin benzoate in marine sediments with different organic matter regimes, temperature conditions, and antibiotic presence.
Mar Pollut Bull
; 197: 115714, 2023 Dec.
Article
en En
| MEDLINE
| ID: mdl-37890320
ABSTRACT
The objectives of this 318-day study are to determine half-lives of the anti-sea lice medication emamectin benzoate (EMB) under conditions present in sediments at aquaculture sites and document the degradation of EMB into its main metabolite desmethyl emamectin benzoate (DES). Tested conditions include different matrix types (sand, mud), two temperatures (4, 10 degrees), organic matter presence (fish feed waste and feces), and the presence of oxytetracycline. We document a transformation ratio of EMB to DES of 0.16 to 4.4 % and show that the co-presence of oxytetracycline increases EMB calculated half-lives to values >6000 days for mud matrices. EMB incubated in high organic enrichment regimes was not observed to degrade at 4 degrees. Multivariate analyses show interactions between sediment conditions (matrix, temperature, organic matter [OM], oxytetracycline) influence EMB persistence and DESEMB ratios. Ranges of EMB half-lives and information on metabolites can be used to anticipate potential effects on marine communities.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Oxitetraciclina
/
Antiparasitarios
Límite:
Animals
Idioma:
En
Revista:
Mar Pollut Bull
Año:
2023
Tipo del documento:
Article