Influencia del fotoperiodo sobre la aparición de la primera madurez sexual, comportamiento reproductivo y calidad de puestas en hembras de lubina Dicentrarchus labrax (Linnaeus, 1758)
Juvenile sea bass, Dicentrarchus labrax (Linnaeus, 1758), (4-5 months old) were kept during four (experiment I) or three (experiment II) consecutive years under artificial photoperiod conditions. Compared with the control group, in experiment I, during the first reproductive cycle, the EX and LO gro...
| Authors: | , , , |
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| Format: | article |
| Publication Date: | 2002 |
| Country: | España |
| Institution: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repository: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/313275 |
| Online Access: | http://hdl.handle.net/10261/313275 |
| Access Level: | Open access |
| Keyword: | Acuicultura Fotoperiodo pubertad reproducción fecundidad relativa lubina Dicentrarchus labrax |
| Summary: | Juvenile sea bass, Dicentrarchus labrax (Linnaeus, 1758), (4-5 months old) were kept during four (experiment I) or three (experiment II) consecutive years under artificial photoperiod conditions. Compared with the control group, in experiment I, during the first reproductive cycle, the EX and LO groups showed a statistically significant advance and delay of 53 and 58 days, respectively, in mean spawning time. In Experiment II, the SLmar and CO groups presented a significant advance in spawning time, of 1 and 2 months, respectively, compared with the controls. From these results, it can be concluded that long-term application of artificial photoperiods can advance or delay the time of first spawning in D. labrax, as well as altering their rates of relative fecundity, and the quality of eggs and larvae. |
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