Pre-breeding Diets in the Seahorse Hippocampus reidi: How Do They Affect Fatty Acid Profiles, Energetic Status and Histological Features in Newborn?

Seahorses ( Hippocampus spp.) are exceptional marine species considering their reproductive patterns and other features. Due to the iconic characteristics of these fishes, aquarium trade, research efforts have increased in last years. Consequently, novel rearing techniques been developed; however, there is a need for improvements on series issues, namely reproduction success enhancement. The tropical reidi most traded seahorse but many aspects breeding its impact quality neonates still poorly understood. In present study, we assessed effects two pre-breeding diets newborn viability biochemical characteristics, energetic status, ultrastructural muscular tissue. During whole season (5 months), breeders were fed one following diets: M0 (adult non-enriched Artemia ) M5 + mysidaceans). From onset period, all 6 months diet M5. Breeding status (ATP, total adenylic nucleotides, AEC, NAD) newborns resulted considerably enhanced treatment However, initial differences did not affect further performance (survival growth until day 7 after male’s pouch release) while gaining access high-quality preys (copepods). Besides, morphological alterations muscle tissue observed. followed capital–income continuum pattern characterized by an mixed capital-income period (until 70–100 days since season) income with progressive exhaustion body reserves, especially M0-newborns. Interestingly, also noticed second half period. Our results seemed indicate that requirements essential fatty acids H. lower than (e.g., guttulatus ). Globally, achieved revealed would likely result advantageous improve endurance conditions moderate starvation or sub-optimal feeding.