Food items autumn winter spring summer
%Cn %O %IRI %Cn %O %IRI %Cn %O %IRI %Cn %O %IRI
Coleoptera 9.6 37.14 10.91 *** *** *** 12.4 40 11.46 15.8 38.57 12.52
Bivalvia 3.5 15.71 4.48 5.3 18.57 5.55 2.3 14.29 3.63 2.1 14.29 3.77
Gastropoda 3.2 15.71 4.41 4.5 20.00 5.70 1 21.43 4.91 *** *** ***
Shrimp 10.4 31.43 9.76 7.9 30.00 8.81 7 32.86 8.72 6.3 28.57 8.03
Amphipoda 4.9 22.86 6.48 3.5 25.71 6.79 3.8 24.29 6.14 2.3 25.71 6.45
nematodes *** *** *** 6.5 27.14 7.82 8 32.86 8.94 5.3 31.43 8.46
tilapians 14.3 55.71 16.34 16.6 60.00 17.81 14.9 57.14 15.76 15.2 52.86 15.67
Clarias sp. 9.4 35.71 10.53 9.3 32.86 9.80 9.6 30.00 8.66 10.1 28.57 8.90
parts of fishes 36 61.43 22.73 35 57.14 21.43 33 54.29 19.09 34 58.57 21.32
Vegetable mat. 8.7 52.86 14.36 11.4 58.57 16.27 8 50.00 12.69 8.9 55.71 14.88
Digested food *** 28.57 *** *** 27.14 *** *** 27.14 *** *** 25.71 ***
Table 8: Seasonal variations in the consumption of food by B. bayad.