Research Square (Research Square),
Год журнала:
2022,
Номер
unknown
Опубликована: Дек. 15, 2022
Abstract
The
current
study
was
aimed
at
studying
the
long-term
effects
of
diclofenac
on
freshwater
shrimp
Neocaridina
davidi
,
concerning
survival,
somatic
growth,
and
reproduction.
To
this
study,
both
ovigerous
females
males
species
were
exposed
for
63
d
to
0
(control),
0.1,
or
1
mg/L
diclofenac.
At
highest
concentration,
significant
mortality
detected,
growth
significantly
decreased.
percentage
with
a
second
spawn,
observable
from
day
45,
increased
mg/L,
while
time
between
spawns
reduced
concentrations
assayed.
However,
gonadal
analysis
made
end
assay
in
surviving
showed
lower
proportion
advanced
oocytes
as
compared
control.
Concerning
hatching,
that
could
have
successful
hatching
diclofenac,
especially
first
spawn.
For
number
juveniles
hatched
control;
these
also
higher
incidence
morphological
abnormalities,
such
hydropsy
underdeveloped
appendages.
Taken
together,
results
even
when
able
produce
earlier
spawns,
reproductive
output
each
spawn
reduced.
No
differences
spermatophore
structure
seen
distal
vas
deferens
males.
Biodiversitas Journal of Biological Diversity,
Год журнала:
2022,
Номер
23(6)
Опубликована: Июнь 6, 2022
Abstract.
Salwiyah,
Purnama
MF,
Syukur.
2022.
Ecological
index
of
freshwater
gastropods
in
Kolaka
District,
Southeast
Sulawesi,
Indonesia.
Biodiversitas
23:
3031-3041.
District
is
one
the
existing
centers
high
gastropod
diversity
Sulawesi
Province,
more
than
30
species
inland
occupy
this
area
and
some
them
(species)
are
used
by
local
communities
as
food
(daily
consumption).
This
research
was
conducted
for
4
months,
namely
January-April
2021
The
purpose
study
to
determine
ecological
(abundance,
diversity,
evenness,
richness,
dominance,
distribution
pattern)
community
Kolaka.
sampling
location
determined
qualitatively
using
purposive
method
a
simple
random
technique
(Quantitative
based).
Gastropod
samples
were
collected
manually
(hand
picking)
paralone
pipe
(3.5
inches),
Sieve
(1
mm),
Gloves.
total
sample
obtained
during
1929
individuals
consisting
9
families,
19
genera,
33
species.
average
abundance
population
reached
96.45
ind./m2
ranged
from
0.75-15.05
ind./m2.
Overall,
results
analysis
showed
stable
condition,
where
categorized
(H':
3.20),
moderate
evenness
(E:
0.90),
richness
(R:
4.23),
dominant
dominance.
that
there
no
(C:
0.1)
clumped
pattern
(Ip:
0.01).
Empirically
data
scientific
justification
related
sustainability
water
ecosystems
or
description
current
homeostasis
system
Journal of Toxicology and Environmental Health,
Год журнала:
2022,
Номер
85(19), С. 798 - 814
Опубликована: Июнь 19, 2022
A
freshwater
snail
assay
was
employed
to
assess
the
embryotoxicity
of
solvents
including
acetone,
methanol,
ethanol,
isopropanol,
dimethyl-sulfoxide,
glycerin,
metals/metalloids
mercuric
chloride
(HgCl2),
cadmium
(CdCl2,),
antimony
salts
Sb+3
and
Sb+5,
drugs
colchicine,
hydroxyurea,
cyclophosphamide,
an
industrial
chemical
sodium
azide
(SA),
anionic
surfactant
dodecyl
sulfate-(DSS),
H2O2
(NaCl).
The
consists
exposing
Biomphalaria
glabrata
egg
masses
(EM)
substances
for
96-hr
following
up
embryo/snail
development
lethality,
abnormal
morphology
(teratogenicity),
day
hatching
10
or
14
after
spawning.
Based
upon
concentration-response
relationships,
LC50%s
(embryolethality),
EC50%s
(teratogenicity)
IC50%s
(hatching
retardation)
95%CIs
were
determined
tested
chemicals.
LOECs
indicated
that
HgCl2
(37
nM)
CdCl2
(140
are
potent
embryotoxic
agents
in
snails.
Teratogenic
indices
(TI
=
LC50/EC50)
almost
all
chemicals
lower
than
close
unity
suggesting
these
compounds
not
teratogenic
this
assay.
may
be
adequately
performed
a
cost-effective
standardized
protocol
which
enables
testing
number
environmental
over
broad
concentration
range.
needs
undergo
further
validation
recognized
internationally
harmonized
hazard
identification
ecotoxicity
risk
assessment.
Biodiversitas Journal of Biological Diversity,
Год журнала:
2022,
Номер
23(7)
Опубликована: Июнь 27, 2022
Abstract.
Oetama
D,
Purnama
MF.
2022.
Freshwater
gastropod
community
in
South
Konawe
District,
Southeast
Sulawesi,
Indonesia.
Biodiversitas
23:
3364-3372.
The
freshwater
population
Indonesia,
consists
of
aquatic
and
terrestrial
snail
communities.
This
resource
(gastropod)
is
an
ecological
economic
potential
that
needs
to
be
maintained
utilized
optimally
sustainably.
research
was
conducted
April-July
2021
aimed
determine
the
index
inland
District.
sampling
location
determined
qualitatively
using
purposive
method
a
simple
random
technique
(Quantitative
based).
Gastropod
samples
were
collected
manually
(hand
picking)
with
paralon
pipe
(3.5
inches),
Sieve
(1
mm),
Gloves.
total
gastropods
obtained
at
33
locations
this
district
2635
individuals.
comprised
19
genera
species
spread
over
9
families,
namely
Achantinidae,
Ampullariidae,
Ariophantidae,
Lymnaeidae,
Neritidae,
Pachychilidae,
Planorbidae,
Thiaridae,
Viviparidae.
average
abundance
reached
79.85
ind./m2
ranged
from
0.58-13.48
ind./m2.
Overall,
analysis
ecology
showed
stable
condition,
where
diversity
categorized
as
high
(H'=
3.03),
moderate
evenness
(E=
0.87),
richness
(R=
4.06).
There
no
dominant
(C=
0.08)
distribution
clustered
pattern
(Ip=
0.02).
These
values
indicated
waters
District
condition.
Although
simultaneously
has
same
area
invasive
family
Melanoides
tuberculata
(O.F.Müller,
1774)
Tarebia
granifera
(Lamarck,
1816).
Research Square (Research Square),
Год журнала:
2022,
Номер
unknown
Опубликована: Дек. 15, 2022
Abstract
The
current
study
was
aimed
at
studying
the
long-term
effects
of
diclofenac
on
freshwater
shrimp
Neocaridina
davidi
,
concerning
survival,
somatic
growth,
and
reproduction.
To
this
study,
both
ovigerous
females
males
species
were
exposed
for
63
d
to
0
(control),
0.1,
or
1
mg/L
diclofenac.
At
highest
concentration,
significant
mortality
detected,
growth
significantly
decreased.
percentage
with
a
second
spawn,
observable
from
day
45,
increased
mg/L,
while
time
between
spawns
reduced
concentrations
assayed.
However,
gonadal
analysis
made
end
assay
in
surviving
showed
lower
proportion
advanced
oocytes
as
compared
control.
Concerning
hatching,
that
could
have
successful
hatching
diclofenac,
especially
first
spawn.
For
number
juveniles
hatched
control;
these
also
higher
incidence
morphological
abnormalities,
such
hydropsy
underdeveloped
appendages.
Taken
together,
results
even
when
able
produce
earlier
spawns,
reproductive
output
each
spawn
reduced.
No
differences
spermatophore
structure
seen
distal
vas
deferens
males.
