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Quality assessment of newly hatched mud crab, Scylla serrata, larvae

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Petsa
2018
May-akda
Quinitio, Emilia T.
dela Cruz-Huervana, Joana Joy
Parado-Estepa, Fe D.
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111
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Abstract
Starvation and exposure to formalin were investigated as possible stress tests for evaluating the quality of mud crab, Scylla serrata, larvae. For the starvation stress test, newly hatched zoeae stocked in 150-ml containers were either starved or fed rotifers. Similarly, newly hatched zoeae were stocked in containers with seawater of 0 (control), 20, 30 and 40 mg/L formalin for the formalin stress test. The zoeae from the same batches were used for seed production to monitor their performance and validate the results of stress tests. Starvation was found to be unsuitable for larval quality evaluation. However, the impact of initial food deprivation on the newly hatched larvae indicates that feeding immediately after hatching is necessary for mud crab larvae. Exposure of larvae to 40 mg/L formalin for 3 hr appeared to be a reliable and practical method for larval quality assessment as the survival of larvae in the mass production tanks validated the classification of good and poor quality batches in the stress tests. On this basis, a hatchery operator can decide which batch should be cultured further. Finally, there appears to be a link between the quality of larvae and the performance at the megalopa and early juvenile crabs.
URI
http://hdl.handle.net/10862/3154
Suggested Citation
Quinitio, E. T., dela Cruz-Huervana, J. J., & Parado-Estepa, F. D. (2018). Quality assessment of newly hatched mud crab, Scylla serrata, larvae. Aquaculture Research, 49(1), 75-80.
DOI
10.1111/are.13434
Paksa
aquatic crustaceans ASFA; food availability ASFA; marine environment ASFA; containers ASFA; starvation ASFA; evaluation ASFA; seed production ASFA; juveniles ASFA; larvae ASFA; quality control ASFA; tests ASFA; hatching ASFA; quality ASFA; sea water ASFA; zoeae ASFA; Biological stress; tanks ASFA; Scylla serrata; Formaldehyde; Formalin; Larval quality; Mud crab hatchery; hatcheries AGROVOC
Taxonomic term
Scylla serrata
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