Data from: The role of sandy environment in enhancing growth, cognition, and reproduction in cultured Senegalese sole (Solea senegalensis) females [Dataset]
Physical enrichment improves fish welfare and reduces negative traits in captivity. Solea senegalensis, a key species in European aquaculture, is often raised in intensive fiberglass tanks, which can lead to undesirable traits, particularly for future breeders. This study assessed the long-term effe...
| Autores: | , , , , , , , , |
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| Tipo de recurso: | conjunto de datos |
| Estado: | Versión publicada |
| Fecha de publicación: | 2026 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/419010 |
| Acceso en línea: | http://hdl.handle.net/10261/419010 |
| Access Level: | acceso abierto |
| Palabra clave: | Flatfish Aquaculture Enriched environment Cognitive capacities Reproduction Agricultural sciences http://metadata.un.org/sdg/14 Conserve and sustainably use the oceans, seas and marine resources for sustainable development |
| Sumario: | Physical enrichment improves fish welfare and reduces negative traits in captivity. Solea senegalensis, a key species in European aquaculture, is often raised in intensive fiberglass tanks, which can lead to undesirable traits, particularly for future breeders. This study assessed the long-term effects of using a sand substrate during the on-growing phase on growth, cognition, and maturation in Senegalese sole females. Six tanks with juvenile soles were divided into two environments (three fiberglass, three sand), and sampled every six months for two years (n = 30 per group). This study measured biometrics, blood, gonad histology, and gene expression in the brain and gonad. Females from sand grew faster than females from fiberglass. The histological results showed that the sand group was more mature than the fiberglass group from the second sampling, where the sand group reached previtellogenic oocytes. Sex steroids and Lh levels were also significantly higher in the sand group after two years. These results in maturation were supported by the fhra and pgrexpression in the brain and gonads. Females from sand showed higher cognitive capacity according to c-fos, nr4a2, and bdnf expression. These results show that using sand as an enrichment helps improve growth, cognition, and reproduction in Senegalese sole females |
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