Ova lipid profiling and egg quality in wild and captive lumpfish, Cyclopterus lumpus (Linnaeus, 1758)

Lumpfish ( Cyclopterus lumpus ) serves an important role as cleaner fish for removing salmon lice in aquaculture. For this use, cultivated lumpfish are preferred over wild-caught to avoid overexploitation of natural stocks and provide a stable production good quality eggs larvae. To support this, high containing the necessary building blocks fertilization success, development into normal embryo hatching success is needed. Ova from captive females were collected assessed identify how wild domesticated differ terms ova lipid profiles, egg larvae quality. Wild-caught displayed higher compared lumpfish, whereas other biological variables like size, egg/larvae dry weight respiration, larval morphometry, not significantly different between lumpfish. profiles (total lipid, classes, fatty acid composition lipidomics) can separate batches based on their geographic origin diets used broodstock (lipid carbohydrate content). Multivariate statistics applied markers that be predict ova. lipidomic covaried with several parameters, indicating former latter. mostly composed triacylglycerides (TAGs) some phosphatidylethanolamines (PEs) phosphatidylcholines (PCs), more sensitive origins, mother weight/size than such size or morphometric measures. PC PE content positively correlated both rates, thus key highlighted species putative predictors • We identified relationships markers. separated by geographical origins parental diet. The 5 PCs 4 PEs rates. These may proposed