International Journal of Marine Science 2015, Vol.5, No.23 1-13
7
Continued Table 2
Species
Family
Habitat
CPUE
Elops machanta
Elopidae
M B
0.18 ±0.40
Stolephorus commersonnii
Engraulidae
M B
4.67 ±0.26
Stolephorus indicus
Engraulidae
M B
2.26 ±0.31
Thryssa dussumeri
Engraulidae
M B
11.54 ±9.32
Thryssa malabarica
Engraulidae
M B
9.53 ±12.85
Gerres filamentosus
Gerridae
M F B
11.27 ±6.07
Gerres setifer
Gerridae
M B
4.43 ±1.4
Glossogobius giurius
Gobidae
M F B
0.67 ±0.0
Hyporhampus xanthopterus
Hemirhamphidae
M F B
18.63 ±10.31
Heteropneustus fossilis
Heteropneustidae
F B
0.31 ±0.85
Leiognathus brevirostris
Leiognathidae
M B
6.72 ±16.21
Leiognathus dussumieri
Leiognathidae
M B
9 ±10.03
Leiognathus equulus
Leiognathidae
M F B
4.34 ±1.4
Megalops cyprinoides
Megalonidae
M F B
6.09 ±8.25
Liza microlepis
Mugilidae
M F B
16.22 ±11.62
Liza parsia
Mugilidae
M F B
18.32 ±10.03
Mugil cephalus
Mugilidae
M F B
21.54 ±11.77
Valamugil speigleri
Mugilidae
M F B
14 ±2.7
Nandus nandus
Nandidae
F B
1.6 ±0.40
Pristolepis fasciata
Nandidae
F
0.54 ±2.31
Channa marulius
Ophiocephalidae
F
2.36 ±9.45
Channa striatus
Ophiocephalidae
F B
2.96 ±2.9
Eleutheronema tetradactylum
Polynemidae
M MFBF B
1.64 ±0.54
Scatophagus argus
Scatophagidae
M F B
3.18 ±4.33
Johnius coitor
Sciaenidae
M F B
4.00 ±4.54
Siganus javus
Siganidae
M B
0.16 ±0.87
Sillago sinhama
Sillaginidae
M B
0.51 ±0.70
Ompok bimaculatus
Siluridae
F B
0.67 ±0.84
Wallago attu
Siluridae
F B
2.02 ±0.04
Arius maculatus
Tachysuridae
M F B
4.6 ±8.5
Arius subrostratus
Tachysuridae
M B
6.4 ±16.43
Plicofollis platystomus
Tachysuridae
M B
0.89 ±0.62
Note: F: Fresh Water; B: Brackish Water; M: Marine water
Table 3 Comparison of fish species diversity [Margalef’s species richness (d), Pielou’s evenness (J’), Shannon index (H)] in the
Southern and Northern sector of Vembanad estuarine system
Region
Station
Margalef’s richness index
Pielou’s evenness index
Shannon Wiener diversity index
Southern
S1
2.562
0.7259
2.836
S2
2.665
0.8235
3.294
S3
2.327
0.9053
3.447
S4
3.667
0.8435
3.762
S5
3.398
0.8212
3.549
S6
4.22
0.8692
3.876
Averge
3.14
0.83
3.46
Northern
S7
4.751
0.9001
4.28
S8
5.336
0.932
4.701
S9
4.627
0.8279
4.176
S10
4.331
0.7693
3.914
Averge
4.76
0.86
4.27
M F B
