Use of neomysis mercedis (crustacea: mysidacea) for estuarine toxicity tests

Journal Article · Mon Mar 01 04:00:00 EST 1993 · Transactions of the American Fisheries Society; (United States)

DOI:https://doi.org/10.1577/1548-8659(1993)122<0279:UONMCM>2.3.CO;2· OSTI ID:5696619

Brandt, O M; Fujimura, R W; Finlayson, B J ^[1]

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1. Aquatic Toxicology Laboratory, Elk Grove, CA (United States)

The mysid Neomysis mercedis was examined as a test organism for use in acute toxicity tests at intermediate salinities characteristic of estuarine waters. Several sensitive invertebrate species are available for marine assessments (mysids) and freshwater tests (cladocerans), but few are available for estuarine toxicity tests. Observations in the laboratory indicate that Neomysis mercedis can be reared successfully at a temperature of 17[degrees]C, a salinity of 2%, and a population density less than 5/L. Brine shrimp nauplii Artemia salina, algae, and commercial foods were used to sustain mysid cultures. Neomysis mercedis is vivaparous and can complete its life cycle in 3-4 months. Neomysis mercedis is as sensitive as or more sensitive to toxicants than the marine mysid Mysidopsis bahia and the freshwater cladocerans Daphnia magna, Ceriodaphnia dubia, and Simocephalus serrulatus. The mean 96-h LC50 values (concentrations lethal to half the test animals) for N. mercedis, in increasing order, were 0.20 [mu]g/L for thiobencarb, and for malathion, 14 [mu]g/L for carbofuran, 150 [mu]g/L for copper sulfate, 280 [mu]g/L for thiobencarb, and 1,600 [mu]g/L for molinate. Neonates (5 d postrelease) were generally more sensitive than older juveniles. Coefficients of variation (100[center dot]SD/mean) of LC50 values varied from 21 to 35%. 37 refs., 2 figs., 7 tabs.

• OSTI ID: 5696619
• Journal Information: Transactions of the American Fisheries Society; (United States), Journal Name: Transactions of the American Fisheries Society; (United States) Vol. 122:2; ISSN 0002-8487; ISSN TAFSAI
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring &amp; Transport-- (1990-)
560300 -- Chemicals Metabolism &amp; Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
AQUATIC ORGANISMS
ARTHROPODS
BIOLOGICAL EFFECTS
BIOLOGICAL INDICATORS
CHEMICAL WASTES
COPPER COMPOUNDS
COPPER SULFATES
CRUSTACEANS
ENVIRONMENTAL TRANSPORT
ESTUARIES
INVERTEBRATES
MASS TRANSFER
NONRADIOACTIVE WASTES
OXYGEN COMPOUNDS
PESTICIDES
RUNOFF
SULFATES
SULFUR COMPOUNDS
SURFACE WATERS
TRANSITION ELEMENT COMPOUNDS
WASTES