Table 1a. Natural food
fluctuations (% of total food intake) of different size classes of mrigal, Cirrhinus mrigala in open
water (river, stream) |
|
Food items |
Percentage composition of food |
|
|
Fingerlings |
Juveniles |
Adults |
|
Green algae |
5.1 |
5.9 |
14.2 |
|
Diatoms |
4.3 |
8.2 |
10.8 |
|
Blue-green algae |
1 |
4 |
6.3 |
|
Desmids |
4.1 |
4 |
2 |
|
Phytoflgellates |
3 |
6.1 |
3.9 |
|
Algal spores and zygotes |
1.5 |
3.6 |
5.9 |
|
Macrovegetation |
- |
2.1 |
1 |
|
Decayed organic matter |
12.3 |
22.3 |
30 |
|
Protozoa |
6.3 |
4.3 |
1.3 |
|
Rotifers |
19.1 |
8.3 |
2 |
|
Crustaceans |
27.3 |
15.1 |
2.5 |
|
Sand and mud |
1.6 |
16.1 |
20.1 |
|
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|
|
Table 1b. Natural food
fluctuations (% of total food intake) of different size classes of mrigal, Cirrhinus mrigala in closed
water (e.g., pond, lake) |
|
Food items |
Percentage composition of food |
|
|
|
Fingerlings |
Juveniles |
Adults |
|
Green algae |
3 |
6.2 |
10 |
|
Diatoms |
6.5 |
12 |
13 |
|
Blue-green algae |
2 |
7 |
9.5 |
|
Desmids |
6 |
5.1 |
4.1 |
|
Phytoflgellates |
8.5 |
8.1 |
7 |
|
Algal spores and zygotes |
3.7 |
3 |
3.8 |
|
Macrovegetation |
1.2 |
1 |
|
|
Decayed organic matter |
15.5 |
19.5 |
31.1 |
|
Protozoa |
6 |
5 |
2.5 |
|
Rotifers |
15.2 |
10.1 |
3 |
|
Crustaceans |
16.4 |
10 |
2 |
|
Sand and mud |
16 |
13 |
14 |
|
Data source : Khan (1972) |
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