title: Effect of low dissolved oxygen on aquatic life stages of the caddisfly Clistoronia magnifica (Limnephilidae).
abstract: Embryos, larval stages (instars I-V), pupal stages, and pharate adults of the caddisfly Clistoronia magnifica (Limnephilidae) were exposed to a range of dissolved oxygen (DO) concentrations (0.9-8.3 mg/L) for 4-88 days in the laboratory. Some embryos suspended growth at low DO, resuming growth and hatch when DO was increased. Embryos and larvae all had 96-h EC50 values (50% mortality at 96 h) of about 2.0 mg/L DO. The statistical Effect and No-Effect Thresholds for larvae exposed through two molts from instars I-III were 1.6 and 2.4 mg/L, respectively. At DO concentrations below 4.6 mg/L, egg hatch, larval development, molting success, time of molting, pupation, and adult emergence were delayed.
authors.affiliation: U. S. Environmental Protection Agency, National Health and Environmental Effects Research Laboratory, Corvallis, Oregon 97333, USA.
authors.forename: A V
authors.initials: AV
authors.lastname: Nebeker
authors.forename: S T
authors.initials: ST
authors.lastname: Onjukka
authors.forename: D G
authors.initials: DG
authors.lastname: Stevens
authors.forename: G A
authors.initials: GA
authors.lastname: Chapman
mesh_terms: D000818:Animals; D004305:Dose-Response Relationship, Drug; D007313:Insecta / Q000187:drug effects* / Q000196:embryology / Q000254:growth & development; D007814:Larva / Q000187:drug effects; D010100:Oxygen / Q000494:pharmacology*; D011679:Pupa / Q000187:drug effects; D012995:Solubility
chemical_list: D010100:Oxygen