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Net uptake of dissolved free amino acids by the giant clam, Tridacna maxima: alternative sources of energy and nitrogen?
Ambariyanto and Hoegh-Guldberg, O. (1999-04) Net uptake of dissolved free amino acids by the giant clam, Tridacna maxima: alternative sources of energy and nitrogen?. Coral Reefs, 18 1: 91-96.
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| Author(s) |
Ambariyanto
Hoegh-Guldberg, O.
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| Title |
Net uptake of dissolved free amino acids by the giant clam, Tridacna maxima: alternative sources of energy and nitrogen?
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| Journal name |
Coral Reefs
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| Publication date |
1999-04
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| Volume number |
18
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| Issue number |
1
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| ISSN |
0722-4028
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| Start page |
91
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| End page |
96
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| Total pages |
6
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| Place of publication |
Berlin
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| Publisher |
Springer-Verlag
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| Language |
eng
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| Subject |
06 Biological Sciences
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| Abstract |
The role of dissolved free amino acids (DFAA) in nitrogen and energy budgets was investigated for the giant clam, Tridacna maxima, growing under field conditions at One Tree Island, at the southern end of the Great Barrier Reef, Australia. Giant clams (121.5-143.7 mm in shell length) took up neutral, acidic and basic amino acids. The rates of net uptake of DFAA did not differ between light and dark, nor for clams growing under normal or slightly enriched ammonium concentrations. Calculations based on the net uptake concentrations typical of the maximum concentrations of DFAA found in coral reef waters (similar to 0.1 mu M)revealed that DFAA could only contribute 0.1% and 1% of the energy and nitrogen demands of giant clams, respectively. These results suggest that DFAA does not supply significant amounts of energy or nitrogen for giant clams or their symbionts.
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| Keyword(s) |
Marine & Freshwater Biology
Acanthaster-planci
Crassostrea-gigas
Larvae
Seawater
Metabolism
Nutrition
Transport
Corals
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