Metabolic Rate Characteristics and Sediment Cleaning Potential of the Tropical Sea Cucumber Holothuria scabra
ISSN | 00213551 |
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書誌レコードID(総合目録DB) | AA0068709X |
The oxygen consumption rate (OCR) and ammonium excretion rate (AER) of a tropical sea cucumber, Holothuria scabra, were determined in laboratory experiments. OCR and AER exhibited a significant negative correlation to body weight (BW), expressed as a power function of BW: OCR = 0.09 × BW-0.58 (mgO2/g/h, r2=0.89, n=15) and AER = 0.38 × BW-0.19(μmolN/g/h, r2=0.54, n=15). These values were comparable to those in previous studies on other sea cucumber species. The OCR of shrimp tank sediment was reduced to less than half (4.5 ± 0.3 to 1.0 ± 0.1 mgO2/gdry/h) by the ingestion and excretion process of H. scabra. Acid volatile sulfide (AVS-S) concentration was also decreased to less than half (0.67 to 0.31 mgS/mgdry); despite the low reduction rates of organic carbon and nitrogen contents (0.19 to 0.14 mgC/mgdry and 0.022 to 0.019 mgN/mgdry, respectively). These results suggest that components in the sediment with high oxygen consumption potential were removed by H. scabra. These findings also provide fundamental information with which to evaluate the quantitative role of H. scabra in polyculture with shrimp.
刊行年月日 | |
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作成者 | KODAMA Masashi SUMBING Joemel Gentelizo LEBATA-RAMOS Maria Junemie Hazel WATANABE Satoshi |
著者キーワード |
ammonium excretion feces oxygen consumption sediment shrimp aquaculture |
公開者 | Japan International Research Center for Agricultural Sciences |
オンライン掲載日 | |
国立情報学研究所メタデータ主題語彙集(資源タイプ) | Journal Article |
巻 | 49 |
号 | 1 |
開始ページ | 79 |
終了ページ | 84 |
DOI | 10.6090/jarq.49.79 |
権利 | Japan International Research Center for Agricultural Sciences |
言語 | eng |