Table 1. Natural food
fluctuations (percent of total food intake) |
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Location |
New Zealand - Lake Waahi (seasonal variations) |
New Zealand - Waikato River |
Spain - Cabanes Lake |
Spain - Albufera Lake |
Black Sea |
Life
stage |
Juveniles/adults |
Juveniles/adults (a) |
Juveniles/adults (b) |
Juveniles/adults (b) |
Larvae (c) |
Period |
Jan/Feb (a) |
Mar/Apr (a) |
Jun/Jul/Aug (a) |
Sept/Oct (a) |
Nov/Dec (a) |
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Plants/algae |
48 |
34 |
59 |
54 |
41 |
63 |
25 |
12.5 |
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Detritus |
35 |
29 |
34 |
29 |
53 |
6 |
37.5 |
30.7 |
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Zoobenthos |
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37.5 |
18.2 |
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Benthic copepod
(Harpacticoida) |
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3.7 |
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1.5 |
Benthic copepod (Monstrilla) |
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0.8 |
Zooplankton |
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38.6 |
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Plankton copepods (Acartia clausi) |
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3 |
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6.4 |
1.2 |
Plankton copepods (Anomalocera patersoni) |
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1.3 |
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3.6 |
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Plankton copepods (Centropages kr�yeri) |
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3.7 |
2.7 |
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3.1 |
2.1 |
Plankton copepods (Labidocera brunescens) |
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0.7 |
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3.1 |
3.1 |
Plankton copepods (Oithona nana) |
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92.6 |
56.9 |
85.7 |
23.8 |
61.3 |
Plankton copepods (Paracalanus parvus) |
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16.9 |
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39.5 |
6.6 |
Plankton copepods (Pontenella mediterranea) |
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7.1 |
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Plankton copepods (Pseudocalanus elongatus) |
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11.8 |
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4.9 |
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Plankton crustacea (Penilia avirostris) |
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5.4 |
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5.9 |
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Plankton crustacea (Evadne sp.) |
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1 |
9.5 |
2.3 |
23.4 |
Crustacean nauplii |
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4.8 |
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Bivalvia larvae |
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0.3 |
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0.3 |
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Snails |
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7 |
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Inorganic matter |
17 |
37 |
7 |
17 |
6 |
24 |
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*Define size class in terms of weight and age (if
applicable) |
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Data source:
(a) Wells (1984) in fishbase.org, (b) Blanco et al. (2003) in fishbase.org,
(c) Pisarevskaya and Aksenova (1991) in fishbase.org |
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