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- Title
Effects of Continuous Light (LD24:0) Modulate the Expression of Lysozyme, Mucin and Peripheral Blood Cells in Rainbow Trout.
- Authors
Valenzuela, Ariel; Rodríguez, Ignacia; Schulz, Berta; Cortés, Raúl; Acosta, Jannel; Campos, Víctor; Escobar-Aguirre, Sebastián
- Abstract
Continuous photoperiod is extensively used in fish farming, to regulate the reproductive cycle, despite evidence suggesting that artificial photoperiods can act as a stressor and impair the immune system. We evaluated the potential effects of an artificial photoperiod on mucus components: lysozyme and mucin, in juvenile rainbow trout (Oncorhynchus mykiss) after exposure for one month to natural photoperiod (LD12:12) or constant light (LD24:0) artificial photoperiod. For each treatment, we assessed changes in peripheral blood cells (erythrocytes and leukocytes) and skin mucus component concentrations. Our results show a decrease in lysozyme concentration, while mucin levels are increased. Similarly, we find elevated monocytes and polymorphonuclears under constant light photoperiod. These findings suggest that LD24:0 regulates lysozyme, mucin, and leukocytes, implying that artificial photoperiods could be a stressful.
- Subjects
FISH farming; RAINBOW trout; LYSOZYMES; ERYTHROCYTES
- Publication
Fishes (MDPI AG), 2022, Vol 7, Issue 1, p28
- ISSN
2410-3888
- Publication type
Article
- DOI
10.3390/fishes7010028