title: Neustonic versus epiphytic bacteria of eutrophic lake and their biodegradation ability on deltamethrin.
abstract: This study evaluated biodegradation of the insecticide deltamethrin (1 μg l(-1)) by pure cultures of neustonic (n = 25) and epiphytic (n = 25) bacteria and by mixed cultures (n = 1), which consisted of a mixture of 25 bacterial strains isolated from the surface microlayer (SM ≈ 250 μm) and epidermis of the Common Reed (Phragmites australis, (Cav.) Trin. ex Steud.) growing in the littoral zone of eutrophic lake Chełmżyńskie. Results indicate that neustonic and epiphytic bacteria are characterized by a similar average capacity to degrade deltamethrin. After a 15-day incubation, bacteria isolated from the surface microlayer reduced the initial concentration of deltamethrin by 60%, while the average effectiveness of the bacteria found on the Common Reed equaled 47%.
authors.affiliation: Department of Water Microbiology and Biotechnology, Nicolaus Copernicus University, Gagarina 9, 87-100, Toruń, Poland. kala@umk.pl
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Kalwasińska
authors.forename: Jacek
authors.initials: J
authors.lastname: Kęsy
authors.forename: Iwona
authors.initials: I
authors.lastname: Wilk
authors.forename: Wojciech
authors.initials: W
authors.lastname: Donderski
mesh_terms: D001419:Bacteria / Q000145:classification / Q000254:growth & development / Q000302:isolation & purification*; D001673:Biodegradation, Environmental; D004787:Environmental Pollution / Q000517:prevention & control*; D005068:Eutrophication; D005618:Fresh Water / Q000382:microbiology*; D005840:Gentian Violet; D007306:Insecticides / Q000378:metabolism; D059013:Microbial Consortia / Q000502:physiology*; D009570:Nitriles / Q000378:metabolism*; D010619:Phenazines; D006109:Poaceae / Q000382:microbiology*; D011044:Poland; D011722:Pyrethrins / Q000378:metabolism*; D014871:Water Microbiology
chemical_list: C035863:Gram's stain; D007306:Insecticides; D009570:Nitriles; D010619:Phenazines; D011722:Pyrethrins; C017180:decamethrin; D005840:Gentian Violet