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Papilionidae, Pleridae, Danaidae and Nymphalidae A study was conducted on the activity pattern of
were at the peak of their populations in the months
of March-June. But, Satyridae had its highest
abundance in November, December and January;
Hesperiidae and Lycaenidae were linearly
abundant throughout the year. Karerhat, Mirersarai
and Chunati had similar pattern of population
distribution.But, Fashiakhali and Eidgaon had
different pattern of population abundance.Not the
seasonal variation but plant phenology and species
richness could be the factors for the appearance of
such kind of abundance. Some butterfly families
were related with some specific plant families in
the forests. Papilionidae was associated with 10
plant families, Pleridae with 10, Nymphalidae with
12, Danaidae with six. Satyridae with three,
Lycinidae with 16, and Hesperiidae with 20 plant
families in the forests.
150 BEGUM, R.A. (Dept. of Zoology, Dhaka
University, Dhaka). Complete Sequence Of A
Gene From The Sessile Barnacle Megabalanus
Volcano (Crustacea: Balanidae) And Its
Phylogenic Relationship With Other Crustaceans.
Bang. J. Zool., 2008, 36 (1), 77-84.
Complete sequence of a protein-coding
cytochrome oxidase 1 (CO1) gene of the
mitochondrial genome in the sessile barnacle,
Megabalanus volcano, was determined that
contained 1, 545 base pairs (bp). The gene was
encoded in the H-stand, the start and stop codon of
the gene was TTG and TAA, respectively. The
base composition of the gene was rich in A+T
(64.5%). For molecular phylogenetic analyses,
nucleotide sequence of the gene from previously
determined mitochondrial genomes for seven other
crustacean species was combined with the present
data. Results revealed that the eight crustacean
species form a monophyletic group in which M.
volcano and Tetraclita japonica had the highest
bootstrap value. This is in harmony with the
morphology of the barnacles.
151 KABIR, M.M. (Dept. of Anatomy,
Cambridge University, UK). Activity pattern of
capped langur in the Rema-Kalenga Wildlife
Sanctuary of Bangladesh. Bang. J. Life Sci., 2006,
18 (2), 59-69.
42
capped langur in the Rema-Kalenga Wildlife
Sanctuary from December 1998 to May 2000.
During this study, a group of capped langur was
followed. There is a positive and strong correlation
between both sunrise and activity start and sunset
and activity finish for capped langur. All members
of capped langur left the sleeping tree just after the
sunrise at 0603h. On average, the group ceased
their activity at 1807h after the sunset. The overall
mean duration of active period of the group is 724
minutes. Capped langur in the study area spent
39.4% of their active time in feeding, 44.9%
resting, 10.4% traveling and 5.3% in other
activities.Activity budgets of the group varied
significantly between hours of the day, months and
seasons. Time spent by different age-sex classes in
different activities varied significantly except in
resting and traveling.
152 KHAN, M.A.G.; NATH, S.K. (Dept. of
Zoology, Chittagong University, Chittagong);
SADIQUE, S.B. (Dept. of Accounting,
Chittagong University, Chattagong) & BISWAS,
S. C. (Dept. of Statistics, Chittagong University,
Chattagong). LIMNOLOGICAL CONDITIONS
OF THREE PONDS AND ECOLOGY OF THEIR
MACROBENTHIC INVERTEBRATES. Bang. J.
Zool., 2007, 35 (1), 1-17.
Limnological conditions and macrobenthic
invertebrates of three ponds til Chittagong,
Bangladesh, were studied on the basis of seasonal
samplings for one year. Primary productivity and
important physical and chemical parameters of
water, viz. water temperature, Secehi depth, p .
H
dissolved oxygen (DO), biological oxygen demand
(BOD), free CO 2, Ca and total phosphate (TP).
2+
were estimated.Texture of sediment was also
determined, and the organic matter content
estimated. The ponds had moderate to good water
quality; critical levels of DO, BOD and CO 2 never
persisted.The mean water p of the ponds was
H
close to neutral, and the waters had low Ca and
2+
high TP contents.The lannal density was poor
(mean density ranged between 1215 and 2021 m ),
j
but the diversity was moderately high (Shannon-
Wiener diversity index - 2.66 to 3.74).
Discriminant Analysis based on Canonical
Correlation necessitated regression and correlation