Seasonal Chemical Composition and Related Gene Expression Profiles in Three Mullet Species, and Their Effect on Nutritional Value
Source abstract
Abstract
The Mugilidae family comprises several euryhaline species of significant ecological and economic value in global fisheries and aquaculture. Despite close taxonomic relationships, Chelon auratus, Chelon ramada and Mugil cephalus differ notably in physiological traits, seasonal energy allocation and tissue composition, influencing both ecological roles and commercial value. This study investigates the effect of seasonality on the fish flesh quality and metabolic gene expression of these three commercially important mullet species, collected from their natural habitat in Klisova Lagoon, Greece, by analyzing proximate composition (moisture, ash, protein, lipid), hepatosomatic index (HSI) and expression of lipid metabolism genes. M. cephalus showed lower protein and lipid content than C. ramada and C. auratus. In this context, expression of key lipid metabolism genes (fabp, pparg, cpt) reflected these differences not only between species but also revealed patterns which differed between examined tissues and seasons. Notably, this study provides the first characterization of these genes in the species examined. HSI data further indicated species-specific and seasonal strategies for energy storage. The results contribute to refining harvest timing strategies, enhancing post-harvest handling practices, in an effort to promote market differentiation and eventually to improve the economic viability of the mullet fishery sector.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Aquaculture Nutrition and Growth · Protein Hydrolysis and Bioactive Peptides · Antioxidant Activity and Oxidative Stress
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Ichthyology and Aquatic Environment, School of Agriculture Sciences, University of Thessaly, Fytokou Str., GR-38445 Volos, Greece
Laboratory of Ichthyology & Fisheries, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
Department of Fisheries & Aquaculture, School of Agricultural Sciences, University of Patras, GR-26504 Mesolonghi, Greece
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