Risks to Aquatic Organisms from Use of Chlorpyrifos in the United States - Reviews of Environmental Contamination and Toxicology - page 137

Brock et al.
( 1995 ),
Cuppen
et al. ( 1995 ),
Van Donk
et al. ( 1995 )

Indoor 847 L,
Netherlands,
Elodea
nuttallii -dominated
(western
waterweed),
nutrient-enriched
system

Dursban ® 4E
48%: 5 and
35

Copepods decreased,
cladocerans
eliminated., rotifers
increased

Not reported Cladocera

reappeared after
10 wk, then
increased; copepods
surpassed pre-dose
levels after 5 wk;
rotifer populations
decreased after their
initial increase

Isopods decreased;
Gammarus pulex ,
Chaorobus
obscuripes , and Plea
minutissima
eliminated

Recoveries by
Proasellus
meridianus and
Lumbriculus
variegatus restored
decomposition rates

Rapid recovery
by Proasellus
meridianus and
some recovery
by Lumbricula
variegatus .
Eliminated
species did not
reappear

<5 μ g L −1

g L −1
applied once

μ

Daam et al.
( 2008a )

Outdoor 1 m 3
Thailand

Dursban ® 40
EC; 0.1, 1, 10,
100

Cladocerans ( Moina
micrura ) most
sensitive,
NOAEC = 0.1

PRC affected at 1,
10, 100

PRC recovered at
1

Pebble baskets;
Conchostraca (clam
shrimp) eliminated at
three highest
concentrations;
ostracods eliminated
at 10

PRC
NOAEC = 0.1 μ g L −1

PRC recovered
by wk-10 at all
concentrations;
Corixidae
recovered by
wk-8; all taxa
recovered by
wk-10

0.1 μ g L −1

g L −1 ;
NOAEC = 0.1

μ μ g L −1 by d-14, at

g L −1
applied once

μ μ g L −1 10 g L −1 by d-35,

and at 100

μ

g L −1 ;
other cladocerans
( Ceriodaphnia
cornuta ), adult
copepods, copepod
nauplii
NOAEC = 1

μ g L −1 by

d-70; all taxa
recovered by wk-10
at 100

μ

μ g L −1 g L −1 ;

Corixidae decreased
at 10

μ

g L −1 ; snails,
fl atworms, mollusks
increased;
NOAEC = 0.1

μ

g L −1 on
wk-1, then recovered;
some rotifers
( Keratella ) decreased
at 100

μ

μ g L −1

g L −1 , other
rotifers increased

μ

Daam et al.
( 2008b )

Outdoor 250 L,
Thailand

Dursban ® 40%
AI; 1

Cladocerans
decreased; copepods,
rotifers, ostracods
increased

PRC affected in both
treatments

PRC recovered by
d-32 in both
treatments

Not included in study Not included in

study

Not included in
study

<1 μ g L −1

g L −1
applied once
or 2× @ 2-wk
interval

μ

(continued)