Transition from endogenous to exogenous feeding in longfin yellowtail Seriola rivoliana larvae under simultaneous effects of daily temperature fluctuation and rotifer Brachionus rotundiformis enrichment

Temperature and nutrition are suggested as the primary factors affecting larval survival during the transition from endogenous to exogenous feeding in fish. However, little is known about its simultaneous impact during this period. In this study, Seriola rivoliana eggs were subjected to a constant 2...

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Published in:Fish physiology and biochemistry 2024-12, Vol.50 (6), p.2637-2649
Main Authors: Pacheco-Carlón, Nairoby, de Dios, Marco A. Hernández, Nolasco-Soria, Hector, Tovar-Ramírez, Dariel, Maldonado-García, Minerva, Galaviz, Mario A., Maldonado-García, Deneb
Format: Article
Language:English
Subjects:
Animal Anatomy
Animal Biochemistry
Animal Feed - analysis
Animal Physiology
Animals
Biomedical and Life Sciences
Brachionus rotundiformis
Diet
Diet - veterinary
Droplets
Eggs
Emulsions
Enrichment
Enzymes
Fatty acids
Feeding
Feeding Behavior
Fish
Fish larvae
Fish oils
Freshwater & Marine Ecology
Hatching
Histology
Larva - physiology
Larvae
Life Sciences
Live feeds
Marine fish
Marine fishes
Marine invertebrates
Morphology
Nutrient deficiency
Nutrients
Nutrition
Nutrition research
Perciformes - growth & development
Perciformes - physiology
Rotifera
Rotifera - physiology
Seriola rivoliana
Survival
Tanks
Temperature
Trypsin
Trypsin gene
Zoology
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Summary:Temperature and nutrition are suggested as the primary factors affecting larval survival during the transition from endogenous to exogenous feeding in fish. However, little is known about its simultaneous impact during this period. In this study, Seriola rivoliana eggs were subjected to a constant 24 °C (CTE) and a daily temperature fluctuation (DTF) between 22.8 and 25.2 °C until oil droplet exhaustion (5.5 days after hatching). On the other hand, marine fish larvae mostly rely on live feed, with certain nutritional deficiencies such as poor long-chain fatty acids. Thus, rotifer Brachionus rotundiformis enrichment was simultaneously evaluated with temperature using three enrichment diets: Ori-green, S.presso, and a Domestic emulsion. For this purpose, the five experimental groups were established in triplicate using six 100-L tanks with three 10-L containers inside (18 experimental units in total). One hundred eggs were incubated, using a green water system, and 10 rotifers mL −1 were offered at mouth opening. After oil droplet exhaustion, survival was only affected by temperature ( P  
ISSN:0920-1742
1573-5168
1573-5168
DOI:10.1007/s10695-024-01408-4