Table 3 Phytoplankton genera observed in the hilsa gut and water.
Phytoplankton division | Seasons | Genus | Percent (%) contribution | ||
|---|---|---|---|---|---|
Hilsa gut | Water | Hilsa gut | Water | ||
Bacillariophyta (diatoms) | Dry | Synedra sp., Coscinodiscus sp., Pleorosigma sp., Triceratium sp., Navicula sp., Fragilaria sp., Lioloma sp., Ditylum sp., Odontella sp., Synedra sp. and Gomphonema sp. | Coscinodiscus sp., Lioloma sp., Asterionella sp., Pleorosigma sp., Chaetoceros sp., Proboscia sp., Ditylum sp., Cerataulina sp., Fragilaria sp., Melosira sp., Asteromphalus sp., Triceratium sp. and Nitzchia sp. | 21.6 | 32 |
Wet | Coscinodiscus sp., Melosira sp., Synedra sp., Fragilaria sp., Asterionella sp., Odontella sp., Diatoma sp., Navicula sp., Surirella sp., Nitzchia sp. and Lioloma sp. | Coscinodiscus sp., Lioloma sp., Pleorosigma sp., Cyclotella sp., Fragilaria sp., Asterionella sp., Odontella sp., Licmophora sp., Synedra sp., Thalassonema sp., Surirella sp., Triceratium sp., Melosira sp. and Nitzchia sp. | 23.5 | 27 | |
Chlorophyta (green algae) | Dry | Oedogonium sp., Spirogyra sp., Pediastrum sp., Muogeotia sp., Ulothrix sp., Microspora sp., Volvox sp., Tetraedron sp., Chlorella sp., Muogeotia sp., Zygnema sp., Closterium sp. and Stichococcus sp. | Hydrodictyon sp., Muogeotia sp., Microspora sp., Chlorella sp., Volvox sp., Ulothrix sp., Merismopedium sp., Uroglena sp., Closterium sp., Pediastrum sp., Oedogonium sp., Spirogyra sp. and Tetraedron sp. | 45.8 | 26 |
Wet | Muogeotia sp., Spirogyra sp., Zygnema sp., Ulothrix sp., Pediastrum sp., Phytocoris sp., Cladophora sp. and Arthrospira sp. | Hydrodictyon sp., Pediastrum sp., Oedogonium sp., Muogeotia sp., Phytoconis sp., Microspora sp., Volvox sp., Arthrospira sp., Zygnema sp., Spirogyra sp. and Tetraedron sp. | 61.5 | 36 | |
Cyanobacteria (blue-green algae) | Dry | Oscillatoria sp., Chroococcus sp., Microcystis sp., Aphanizomenon sp., Gomphosphaeria sp., Anabaena sp. and Merismopedium sp. | Microcystis sp., Gomphosphaeria sp., Oscillatoria sp., Aphanizomenon sp., Lyngbya sp. and Rivularia sp. | 14.08 | 16 |
Wet | Gomphosphaeria sp., Microcystis sp., Oscillatoria sp., Gleocapsa sp. and Anabena sp. | Microcystis sp., Anabaena sp., Gomphosphaeria sp., Oscillatoria sp. | 12 | 14 | |
Xanthophyta | Dry | Botrydium sp. | – | 2.66 | |
Wet | – | – | – | ||
Euglenophyta | Dry | Euglena sp. | 3 | ||
Wet | Euglena sp. | Euglena sp. | 1 | 4 | |
Miozoa | Dry | – | Ceratium sp. | 9 | |
Wet | – | Ceratium sp. and Detonula sp. | 4 | ||
