title: Interactive effects of λ-cyhalothrin, soil moisture, and temperature on Folsomia candida and Sinella curviseta (Collembola).
abstract: The authors investigated whether and how 2 environmental factors could influence the toxicity of a pyrethroid to 2 representatives of an important group of soil organisms. The impacts of different temperatures (20 °C and 26 °C) and soil moisture levels (30%, 50%, and 70% of water holding capacity) were investigated in combination with the insecticide λ-cyhalothrin on the reproduction success of Folsomia candida and Sinella curviseta in a full factorial design. Testing was based on the standard collembolan reproduction test (Organisation for Economic Co-operation and Development, guideline 232) following an effect concentration design. The results showed an effect of environmental and chemical factors on the number of juveniles of these animals. Particularly in dry soil, the reproduction of both species was reduced, while higher soil moisture levels influenced the number of juveniles positively compared with the middle soil moisture level. In general, however, higher soil moisture led to increased sensitivity to λ-cyhalothrin. In both organisms, temperature affected the toxicity of the pesticide but in different directions: high temperature led to higher toxicity in F. candida but to lower toxicity in S. curviseta.
authors.affiliation: ECT Oekotoxikologie, Flörsheim, Germany; Biodiversity and Climate Research Centre BiK-F, Frankfurt/Main, Germany; Department of Aquatic Ecotoxicology, Goethe University Frankfurt, Frankfurt/Main, Germany.
authors.forename: Cornelia
authors.initials: C
authors.lastname: Bandow
authors.forename: Anja
authors.initials: A
authors.lastname: Coors
authors.forename: Nora
authors.initials: N
authors.lastname: Karau
authors.forename: Jörg
authors.initials: J
authors.lastname: Römbke
mesh_terms: D000818:Animals; D001181:Arthropods / Q000187:drug effects* / Q000502:physiology; D005659:Fungicides, Industrial / Q000737:chemistry / Q000633:toxicity; D007306:Insecticides / Q000633:toxicity*; D009570:Nitriles / Q000737:chemistry / Q000633:toxicity*; D011722:Pyrethrins / Q000737:chemistry / Q000633:toxicity*; D012098:Reproduction / Q000187:drug effects; D012987:Soil; D012989:Soil Pollutants / Q000633:toxicity*; D013696:Temperature; D014867:Water
chemical_list: D005659:Fungicides, Industrial; D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; D012987:Soil; D012989:Soil Pollutants; D014867:Water; C037304:cyhalothrin
keywords: Environmental factor; Factorial design; Insecticide; Springtail; Toxic effect