Use of 14C for Assessment of Nutritional Problems
125
70
60 ·
50
40 ,
30
20 I
10 I
o ·
9
10
11
12
Fig. 3.6. Feeding spectra of main trophospecies of zooplankton from the Dalnee Lake
(Kamchatka): The food objects: 1 bacteria; 2 Chlorella; 3 Stephanodiscus (key blooming diatom); 4 Asterionella; 5 Scenedesmus; 6 Ankistrodesmus; 7 Staurastrum; 8 detritus; 9 rotifers (Brachionus); 10 nauplii; 11 Neodiaptomus (copepodids); 12 ciliates; on
the ordinate the index of assimilation CalC, %. The zooplankters. I Neodiaptomus
angustilobis. II Cyclops scutifer. III Predatory rotifer Asplanchna priodonta
Table 3.1. Index of assimilation (CalC) during feeding of
Cricotopus silvestris on different kinds of food
Kind of food
State of food
CalC (%)
Nitzschia sp.
Living
31.4
Scenedesmus quadricauda
Living
2.6
Dead
22.1
Coelosphaerium dubium
Living
26.6
Dead
30.23
Aphanizomenon fios-aquae
Living
19.6
Chlorella
Living
1.0
Elodea
Detritus
0.28
Bacteria
Living
14.7
Bosmina
Living
0.67
Living
3.9
Dead
14.1