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Análisis transcriptómico del desarrollo testicular en Thamnaconus septentrionalis en respuesta a un aumento de
Yan Liu1, Xueli Zhang1, Wengang Xu1
1School of Ocean, Yantai University, Yantai 264005, China.
Animals : an open access journal from MDPI
|January 28, 2026
Resumen
El aumento de las temperaturas promueve el desarrollo testicular en el pez comercialmente importante Thamnaconus septentrionalis. Este estudio revela mecanismos moleculares que involucran la biosíntesis de hormonas esteroides, lo que ayuda a los esfuerzos de cría artificial y conservación para esta especie de acuicultura.
Área de la Ciencia:
- Acuicultura
- Biología reproductiva de peces
- Endocrinología molecular
Sus antecedentes:
- Thamnaconus septentrionalis es una valiosa especie de acuicultura comercial que enfrenta una disminución de la población.
- La cría artificial es crucial para la conservación de T. septentrionalis y el desarrollo de la pesquería.
- Se conoce el impacto de la temperatura en el desarrollo de los ovarios de T. septentrionalis, pero los mecanismos de desarrollo testicular están poco estudiados.
Objetivo del estudio:
- Investigar los efectos de la temperatura en el desarrollo testicular de T. septentrionalis.
- Elucidar los mecanismos moleculares subyacentes al desarrollo testicular inducido por la temperatura.
Principales métodos:
- Observación histológica y microscopía electrónica de transmisión de testículos de T. septentrionalis a diferentes temperaturas.
- Análisis transcriptómico para identificar genes diferencialmente expresados.
Principales resultados:
- Las temperaturas elevadas avanzaron el desarrollo testicular de T. septentrionalis de la fase III a la IV.
- El análisis transcriptómico reveló 315 genes diferencialmente expresados (200 regulados al alza, 115 regulados a la baja).
- Las vías clave afectadas incluyen la biosíntesis de hormonas esteroides, la senescencia celular y el metabolismo de nucleótidos.
Conclusiones:
- La temperatura influye significativamente en el desarrollo testicular de T. septentrionalis.
- La regulación al alza de genes como hsd11b2, cyp11b, cyp11a y hsd17b3 puede aumentar los niveles de testosterona y 11-ceto-testosterona.
- Esta investigación proporciona nuevas perspectivas moleculares para la cría artificial y la conservación de recursos de T. septentrionalis.
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