Effect of low dissolved oxygen on aquatic life stages of the caddisfly Clistoronia magnifica (Limnephilidae).
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.
Nebeker
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U. S. Environmental Protection Agency, National Health and Environmental Effects Research Laboratory, Corvallis, Oregon 97333, USA.
Onjukka
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Stevens
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Chapman
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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
D010100:Oxygen