English Summary
THE MALARIA VECTOR IN TELUK
DALAM SUBDISTRICT, NIAS
Damar T. Boewono, Sustriayu N,T.
Sularto, Mujiono, Sukarno
Vector Control Research Station, Health
Research and Development Board, De-
partment of Health, Salatiga, Indonesia
A field study on malaria vec-
tors has been conducted on 1995,
in three villages which were lo-
cated in coastal and inland
areas of Teluk Dalam subdistrict
of Nias island, North Sumatra
Province.
The results of this study showed
that the suspected malaria
vectors in those areas were An.
nigerrimus, An. sundaicus, An,
kochi, An. barbirostris and An. si-
nensis. Two species were con-
firmed as malaria vector, i.e. An.
tessellatusand An. sinensis,which
were detected positive sporo-
zoite using ELISA test and squash
method, respectively.
Cermin Dunja Kedokt. 1997; 118: 9-14
Dtb, Sn, Ts, M, S
THE EFFICACY OF B.SPHAERICUS
2362 (SPHERIMOS PP) ON ANO-
PHELES SPP. LARVAE
Umi Widyastuti, Blondine Ch.P.,
Mujiyono
Vector Control Research Station,
Health Research and Development
Board, Department of Health, Sala-
tiga, Indonesia
A study using the biological
agent B. sphaericus 2362 (Spheri-
mos PP) was conducted in the
Vector Control Research Station
laboratory in Salatiga. It was also
applied to ricefields belonging
to inhabitants of Bawonifaoso
village. Teluk Dalam Sub District,
Nias Regency. These ricefields
were breeding sites for Anophe-
les spp larvae. The aim of this
study was to determine the
efficacy of powder formulation
of B. sphaericus 2362 (Spherimos
PP) against Anopheles larvae in
the laboratory as well as in the
field.
The effect of Spherimos PP
toward Anopheles larvae in the
laboratory was conducted
according to WHO guidelines to
assess the lethal concentrations
(LC50 and LC9O), calculated
through the probif analysis:
Laboratory test showed that
after 24 hours of exposure, the
LC50 and LC90 values calculated
for early fourth- instar larvae of
An, sinensis were 0.0079 ppm and
0.0211 ppm respectively. While
after 48 hours of exposure, the
LC50 and LC90 were estimated
as 0.0058 ppm and 0.0083 ppm
respectively.
In the field test, the efficacy of
Spherimos PP. dosage of 0.016
ppm on Anopheles spp larvae
was maintainedfor2l days, while
dosages of 0.08 ppm and 0.8 ppm
were maintained for 35 days with
reduction of larval population
density of more than 50%.
Cermin Dunia Kedokt.1997; 118: 28-32
Uw, B, M
THE EFFICACY OF B. THURINGIEN-
SIS H-14 (VECTOBAC G) ON ANO-
PHELES BARBIROSTRIS VD. WULP
LARVAE IN LABORATORY SETTING
Umi Widyastuti, Widiarti, Sustriayu
Nalim
Vector Control Research Station,
Health Research and Development
Board, Department of Heatm, Sala-
tiga, Indonesia
A study was conducted in the
Vector Control Research Station
Laboratory in Salatiga, to de-
termine the efficacy of B. Thu-
ringiensis H-14 (Vectobac G)
against An. barbirostris larvae.
Laboratory tests showed that B.
Thuringiensis H-14 at a dosage of
0.28 g/m
2
was effective against
all larval instars of An. barbirostris
a which was provided with or with-
out food consisting meat - rice
bran mixed powder. Mortality
was observed at 80% - 100%. A
significant difference was
observed in the mortality of fourth
instar larvae provided with
meat - rice bran mixed powder
(80%) compared with seven other
treatments (larval mortality
ranged from 98.75% - 100%) (p <
0.05).
Cermin Dunia Kedokt.1997; 118: 33-4
Uw, W, Sn
PLASMODIUM BERGHEI INOCU-
LATION ON SEVERAL STRAINS
OF MICE
Siti Sundari, Edhie Sulaksono,
Rabea Pangerti Yekti, Suba-
gio
Health Research and Development
Board, Department of Health. Jakarta,
Indonesia
Swiss derived, Balb/c and
C3H strains of mice were stu-
Bersambung ke hal. 19
Cermin Dunia Kedokteran No. 118, 1997
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