Nutritional values of Apocyclops dengizicus (Copepoda: Cyclopoida) fed Chaetocerous calcitrans and Tetraselmis tetrathele
The cyclopoid copepod Apocyclops dengizicus was isolated from a marine shrimp pond, Penaeus monodon, Kuala Selangor, Malaysia, and reared in the laboratory for 3 months to establish a pure population stock. Amino acids and fatty acids of A. dengizicus were determined when fed Chaetocerous calci...
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| Principais autores: | , , |
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| Formato: | Atigo |
| Idioma: | English |
| Publicado em: |
Wiley-Blackwell
2009
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| Resumo: | The cyclopoid copepod Apocyclops dengizicus was isolated
from a marine shrimp pond, Penaeus monodon,
Kuala Selangor, Malaysia, and reared in the laboratory
for 3 months to establish a pure population
stock. Amino acids and fatty acids of A. dengizicus
were determined when fed Chaetocerous calcitrans
(C), Tetraselmis tetrathele (T) and their combination
(CT) (1:1 by number). The protein contents in A. dengizicus
that received C, T and CT were 46.8%, 60.5%
and 55.3% of dry weight respectively. Correspondingly,
the lipid was 19.0%, 17.8% and 19.1% of dry
weight for C,T and CT respectively. TheA. dengizicus
cultured on C, T and CT had total essential amino
acids without tryptophan measurement of 57.1, 60.3
and 67.8 and total non-essential amino acids of
42.9%, 40.0% and 32.2% of total amino acids. The
fatty acid content of A. dengizicus showed that it was
able to synthesize docosahexenoic acid (22:6n-3,
DHA), eicosapentaenoic acid (20:5n-3, EPA) and arachidonic
acid (20: 4n-6, ARA) from examined microalgal
diets. The DHA:EPA:ARA ratios of A. dengizicus
fed on C, T and CT were 6.8:3.0:1, 14.0:5.8:1 and
11.6:2.6:1 respectively. Apocyclops dengizicus could be
suitable live food for larval ¢sh and shrimp rearing
because it meets their nutritive requirements. |
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