International Journal of Aquaculture, 2015, Vol.5, No.27 1
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Table 2 Within population allelic richness, Shannon's index, evenness
Population Name
S (±SD)
H´or I (±SD)
e
H´
E= e
H´
/S
TR-1
1.2965 ±0.4579
0.1791 ±0.2848
1.1961
0.922561
TR-2
1.2915 ±0.4556
0.1648 ±0.2691
1.1792
0.913047
TR-3
1.3769 ±0.4858
0.2205 ±0.2950
1.2467
0.905440
TR-4
1.3417 ±0.4755
0.1934 ±0.2811
1.2134
0.904375
TR-5
1.3216 ±0.4683
0.1899 ±0.2859
1.2091
0.914876
TR-6
1.3417 ±0.4755
0.1930 ±0.2826
1.2129
0.904002
S = Observed number of alleles or allelic richness; H´or I= Shannon's Information index; E= Measure of evenness.
SD= Standard deviation
Figure 1 Map showing collection spots of
Badis badis
from the
streams of the Terai region in the northern part of West Bengal,
India. Geographical locations and altitudes were recorded by
hand-held GPS. The alphabets in capital bold case indicate the
collection spots. TR-1. Mahananda Barrage, Fulbari [26º38.884
´N; 88º24.125´E; 319 ft AMSL]; TR-2. Mahananda-Panchanoi
River Junction [26º42.125´N; 88º24.717´E; 620 ft AMSL];
TR-3. Balason River, Palpara, Matigara [26º43.177´N; 88º22.
825´E; 646ft AMSL]; TR-4. Panchanoi River [26º43.007´N;
88º24.396´E; 666 ft AMSL]; TR-5. Mahananda River, Champasari
[26º44.452´N; 88º25.497´E; 717 ft AMSL]; TR-6. Balason River,
Tarabari [26º45.632´N; 88º18.912´E; 731 ft AMSL]
and identity as well as from the UPGMA
dendrogram that the TR-1 and TR-5 populations were
more distant from each other while the TR-4 and TR-5
populations were more closely related to each other
(Figure 3B). The dendrogram indicated that the six
populations formed two groups, one group consisting
five populations viz., TR-2, TR-3, TR-4, TR-5 and
TR-6 whereas the population of TR-1 formed a single
outgroup (Figure 3B). The two-dimensional PCoA
plot (Figure 4) gave a clearer picture of clustering of 6
Badis badis
populations in this region. The four
populations viz., TR-3; TR-4; TR-5; TR-6 formed a
cluster whereas TR-1 and TR-2 constituted two
separate groups (Figure 4). Therefore, the PCoA
analysis was largely in agreement and confirmation
with the UPGMA dendrogram.
1.4
SHE analysis
SHE
analysis revealed a clear distribution of three
biodiversity components richness (
S
), diversity (
H
´)
and evenness (
E
) of the
Badis badis
gene pool into six
Figure 2 Pair-wise gene differentiation and estimate of gene
flow of six different populations of
Badis badis
