Page 62 - PARVEEN, S

maintaining their daily life expenses. The LEAN FISHES
sanitation process of the study area was very poor.
191 ZANNAT, M.F.; AKTER, T. & AHMAD,
S. (Dept. of Zoology, Jahangirnagar University,
Savar, Dhaka). LARVICIDAL ACTIVITY OF
FRESH AND ROTTEN LEAF EXTRACT OF
SOME INDIGENOUS PLANTS AGAINST
RD
LATE 3 INSTAR LARVAE OF CULEX
QUINQUEFASCIATUS SAY (DIPTERA:
CULICIDAE). Bang. J. Life Sci., 2007, 19 (1), 25-
31.
Laboratory studies were carried out to evaluate the
larvicidal properties of fresh and rotten leaf extract
of five indigenous plants with three concentrations
rd
5%, 10% and 15% against late 3 instar larvae of
Culex quinquefasciatus Say. Tested plants were
Azadirachta indica (Neem), Lantana camara
(Utushkanta), Ipomea Fistulosa (Dholkolmi),
Tagetes patula (Gada) and Duranta plumieri
(Katamehedi). Highest mortality occurred within
24 hours with 3 different concentrations of both
fresh and rotten leaves of Ipomea fistulosa.
Significant difference occurred in 5%
concentration of fresh and rotten leaves of Tagetes
patula, in rotten leaves 90%, and in fresh leaves
41.66% mortality occurred. Percent mortality did
not vary between 5% and 10% concentrated extract
of fresh leaves. But, 10% concentrated extract of
rotten leaves of Duranta plumieri, Tagetes patula
and Ipomea fistulosa shows higher toxicity (above
90%) against Culex larvae than extract of fresh
leaves. No significant variation occurred between
extract of fresh and rotten leaves of different plants
in 15% concentration, but, 15% extract of fresh
and rotten leaves of Azadirachta indica and
Lantana camara significantly differ with their 5%
concentration after 24 hours of exposure.
597 : ZOOLOGY : FISHES
192 AKTER, S.; AHMED, A.T.A. (Dept. of
Zoology, Dhaka University, Dhaka); WAHED,
M.A. & KHALEQUE, M.A. (Institute of Food
Science and Technology, BCSIR, Dhaka).
STUDIES ON THE PERFORMANCE OF
TURMERIC WITH SALT AS A GHITTAGONG
PRESERVATIVE FOR THE CURING OF TWO
55
IN LABORATORY
CONDITION. Bang. J. Zool., 2007, 35 (1), 49-60.
A new dimension of preservation process
(Turmeric Salting Process) "TPS" for curing of
nutritionally enriched lean fishes (non-fatty,
.smaller fishes), such as Mola [Amblypharyngodon
mola, Hamilton Buchanan. 1822) and Chapila
(Gudusia chapra. Hamilton Buchanan, 1822) was
compared to other general salt curing methods (e.g.
dry salting, pickle salting, and mixed salting). The
TPS included a combination of salting and drying
process and addition of turmeric with salt as
preservative. The curing periods of the TSP ranged
from 8 to 14 hours (drying time) whereas it was
72, from 120 to 144, arid 120 to 168 hours in case
of Dry Salted Product (DSP), Pickle Salted Product
(PSP) and Mixed Salted Product (MSP),
respectively. The TSP contained higher percentage
of protein (42.12 to 45.35 %) and fat (8.2 to 8.26
%) and lower percentage of moisture (15.46 to
20.12 %) than those of DSP, PSP and MSP. The
shelf-life of the TSP ranged from 4 to 5 months
and of the DSP, PSP and MSP ranged from 2 to 3
months at room temperature. The sensory scores of
the TSP showed the highest average value (4.875)
of all the values of other products. The average
Total Volatile Nitrogen (TVN) values of the G.
chapra and A. mola fishes were 100 and 110 in the
case of TSP, 177 and 181 in the DSP, 176 and 191
in the PSP. and 192 and 204 in the MSP. In this
case the turmeric could have acted as a protector
against insect pests, fungi and other pathogens and
served as a longer term preserver containing a taste
increasing nutrient. The TSP showed a prime level
of effectiveness possessing a longer shelf-life,
higher sensory scores, shorter curing period, better
quality and more favourable nutrient properties for
preservation than any other type of salt curing
methods.
193 BASHAR, M.A.; MAMUN, M.A.; KHAN,
H.R. & CHOWDHURY, M.A.K. (Dept. of
Zoology, Dhaka University, Dhaka). WING-
VENATION AS A FACTOR FOR THE
IDENTIFICATION OF NYMPHALID
BUTTERFLIES IN THE FORESTS OF
& COX'S BAZAR
(BANGLADESH). Bang. J. Zool., 2006, 34 (2),
187-193.