Table 3: Percentage composition of various zooplankton taxa in the MLD and thermocline layer during early and peak phases of summer monsoon at station 1 and 6 (values in the parentheses denotes the peak phase).

Zooplankton taxaStation 1Station 6
MLD (%)Thermocline (%)MLD (%)Thermocline (%)

Polychaeta0.52 (—)0.41 (0.12)— (—)0.23 (—)
Chaetognatha1.09 (3.86)0.86 (12.11)8.17 (0.24)0.96 (1.91)
Euphausiids0.12 (0.86)0.09 (8.37)0.03 (0.05)0.10 (55.51)
Decapoda0.56 (0.45)0.45 (0.67)1.24 (0.04)0.44 (0.07)
Pteropoda0.28 (0.00)0.22 (0.06)8.91 (0.01)1.24 (—)
Foraminifera1.80 (0.67)1.42 (0.18)0.75 (—)— (—)
Ostracoda27.73 (42.43)21.92 (19.87)3.44 (1.27)8.93 (3.34)
Copepoda66.39 (51.05)52.49 (56.66)69.31 (30.81)83.7 (15.08)
Amphipoda0.87 (0.01)0.69 (—)0.07 (0.01)0.06 (—)
Fish larvae0.10 (—)0.08 (0.19)0.68 (—)0.0 (0.03)
Siphonophora0.30 (0.03)0.23 (0.19)0.01 (6.36)0.10 (2.69)
Copelata0.25 (0.28)0.19 (0.01)6.00 (0.00)2.46 (—)
Doliolids— (—)— (0.03)0.06 (0.01)— (0.02)
Stomatopoda— (—)— (0.02)0.44 (0.03)0.03 (0.01)
Heteropoda— (—)— (—)0.10 (—)— (—)
Mysid— (—)— (0.32)— (—)— (—)
Gastropoda— (0.29)— (0.80)0.09 (—)0.33 (—)
Fish egg— (—)— (—)— (—)0.84 (—)
Cephalopoda— (0.02)— (—)— (—)0.02 (—)
Salp— (—)— (—)0.28 (—)0.20 (—)
Medusa— (—)— (0.03)— (—)— (—)
Amphioxus— (0.04)— (—)— (—)— (—)
Hydrozoa— (—)— (0.37) — (0.13)— (—)
Euphausiid Egg— (—)— (—) — (61.11)— (20.95)
Others— (—)— (—)0.18 (—)0.13 (—)