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| Content Provider | Springer Nature Link |
|---|---|
| Author | Buitrago, Esperanza Lodeiros, Cèsar Lunar, Karem Alvarado, Daniela Indorf, Federico Frontado, Khenia More, Pulido Vasquez, Zoila |
| Copyright Year | 2005 |
| Abstract | We evaluated the mass production of competent larvae of the sea urchin Lytechinus variegatus cultured at three initial densities (0.25, 0.5, and 1 larvae per ml) and fed Chaetoceros muelleri. Survival, length, dry weight of larvae, and larval stage index (LSI) were estimated in each treatment as a function of the density. Density decreased during the experiment due to mortality, but the percentage was similar in all three treatments (68.5, 66.7, and 76.0%). The experiment was stopped at 13 days after fertilization, when most of the larvae were competent and had settled. There were no significant differences in survival (exceeded 65% in all treatments), length and larval stage index among treatments. However, larvae weight in the two low density treatments (1.1 ± 0.11 mg and 1.2 ± 0.05 mg, respectively) was greater than the high density treatment (0.59±0.376 mg). This study demonstrates that competent larvae of Lytechinus variegatus can be produced with less than 25% mortality in 13 days when cultures are started at densities of 0.25–1 larvae/ml. Culturing at higher densities (0.5–1 larvae/ml) had no apparent disadvantages and would reduce the cost of production. |
| Starting Page | 359 |
| Ending Page | 367 |
| Page Count | 9 |
| File Format | |
| ISSN | 09676120 |
| Journal | Aquaculture International |
| Volume Number | 13 |
| Issue Number | 4 |
| e-ISSN | 1573143X |
| Language | English |
| Publisher | Kluwer Academic Publishers |
| Publisher Date | 2005-01-01 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Culture Density Echinoid Larvae Lytechinus variegatus Hydrobiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Aquatic Science Agronomy and Crop Science |
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