Stomach Content Analysis (SCA) |
Oreochromis
niloticus |
Oreochromis niloticus |
Oreochromis niloticus |
Coptodon
rendalli |
Coptodon rendalli |
Coptodon
rendalli |
Statistics |
|
Number of fish(n) |
Size class (mm. TL) |
Mean±SD |
Number of
fish |
Size class (mm. TL) |
Mean±SD |
|
Stomach fullness |
46 |
<50 |
1.9 ± 1.4 |
48 |
<50 |
2.5 ± 1.2 |
U=129,n=89, p=0012 |
|
65 |
51-100 |
3.0 ± 0.9 |
79 |
51-100 |
3.6 ± 0.5 |
U=153,n=81, p=0165 |
|
90 |
101-150 |
3.5 ± 0.5 |
39 |
101-150 |
3.5 ± 0.6 |
U=144,n=129, p=0283 |
Vacuity index |
46 |
<50 |
7.2 |
48 |
<50 |
16.7 |
U=338,n=133, p=0.001 |
|
65 |
51-100 |
31 |
79 |
51-100 |
21.4 |
U=319,n=127,
p=0128 |
|
90 |
101-150 |
51.4 |
39 |
101-150 |
21.5 |
U=387,n=141,
p=0172 |
Levin’s index |
46 |
<50 |
1.4 ± 1.4 |
48 |
<50 |
1.5 ± 1.2 |
U=216,n=91, p=01397 |
|
65 |
51-100 |
2.0 ± 0.3 |
79 |
51-100 |
2.6 ± 0.5 |
U=291,n=87, p=0.001 |
|
90 |
101-150 |
2.5 ± 1.5 |
39 |
101-150 |
2.4 ± 0.4 |
U=288,n=101, p<0001 |