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Título: Effect of Light–Dark Cycle on Skin Mucosal Immune Activities of Gilthead Seabream (Sparus aurata) and European Sea Bass (Dicentrarchus labrax)
Fecha de publicación: 2020
Editorial: MDPI
Cita bibliográfica: Fishes, 2020, 5, 10;
ISSN: 2410-3888
Materias relacionadas: CDU::5 - Ciencias puras y naturales
Palabras clave: photoperiod
circadian rhythms
skin
mucosal immunity
gilthead seabream (Sparus aurata)
European sea bass (Dicentrarchus labrax)
teleosts
aquaculture
Resumen: Changes in di erent immune activities in the skin mucus of gilthead seabream (Sparus aurata L.) and European sea bass (Dicentrarchus labrax L.) specimens exposed to a constant light–dark photoperiod (12 h L:12 h D) were studied. Samples were collected at 08:00 (light on), 14:00, 20:00 (light o ), 02:00, and again at 08:00 to determine immunoglobulin M (IgM) levels, several enzymes related to the immune system, and bactericidal activity. IgM levels were higher during the day in seabream and reached a minimum value at 20:00, but it was hardly a ected in sea bass. No significant variations were recorded in the levels of protease and antiprotease. Peroxidase reached its maximum level in seabream at 02:00, the same time that it reached its minimum level in sea bass. Lysozyme showed little variation in seabream, but it was significantly lower at 14:00 than during the rest of the cycle in sea bass. Finally, di erent interspecific variations on bactericidal activity against Vibrio harveyi were recorded. The findings demonstrate that the immune parameters present in skin mucus of these important fish species are a ected by the light–dark cycle and that there are substantial interspecies di erences.
Autor/es principal/es: Ceballos-Francisco, Diana
Cuesta, Alberto
Esteban, María Ángeles
Facultad/Departamentos/Servicios: Departamento de Biología Celular e Histología
URI: http://hdl.handle.net/10201/103054
DOI: doi:10.3390/fishes5010010
Tipo de documento: info:eu-repo/semantics/article
Número páginas / Extensión: 16
Derechos: info:eu-repo/semantics/openAccess
Atribución-NoComercial-SinDerivadas 3.0 España
Aparece en las colecciones:Artículos: Biología Celular e Histología

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