Interactions of temperature and dietary composition on juvenile European lobster (Homarus gammarus, L.) energy metabolism and performance
| Autor: | Renata Gonçalves, Ivar Lund, Manuel Gesto |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Carbohydrate Physiology Acclimatization Denmark Molting 01 natural sciences Biochemistry Feed conversion ratio chemistry.chemical_compound Animal science Homarus gammarus Gammarus Juvenile Animals Lactic Acid Cephalothorax Molecular Biology Ecosystem Glycogen biology 010604 marine biology & hydrobiology Protein Temperature Extruded feeds 04 agricultural and veterinary sciences biology.organism_classification Animal Feed Diet Nephropidae Glucose chemistry Antarctic krill 040102 fisheries 0401 agriculture forestry and fisheries Animal Nutritional Physiological Phenomena Female Energy Metabolism Moulting |
| Zdroj: | Goncalves, R, Lund, I & Gesto, M 2021, ' Interactions of temperature and dietary composition on juvenile European lobster ( Homarus gammarus, L. ) energy metabolism and performance ', Comparative Biochemistry and Physiology-Part A: Molecular & Integrative Physiology, vol. 260, 111019 . https://doi.org/10.1016/j.cbpa.2021.111019 |
| ISSN: | 1531-4332 |
| DOI: | 10.1016/j.cbpa.2021.111019 |
| Popis: | Optimal rearing temperatures for European lobster Homarus gammarus in aquaculture differ from those prevalent in their aquatic ecosystems and acclimating juveniles to the prevailing temperatures before release may aid in the success of re-stocking programs. As the dietary nutritional composition is important for optimal performance of H. gammarus, in this study we aimed to investigate whether juvenile growth and energy metabolism responses to temperature variation could be modulated by the diet. Prior to the trial start, the juveniles were divided into two groups. One was maintained at 19 °C and the other gradually adapted to 13 °C. From this point and for a 24-day period, juveniles (~ 100 mg) within each temperature group were assigned one of two experimental diets: a carbohydrate-rich (HC) or a protein-rich (HP) extruded feed. Antarctic krill (AK) was used as a control diet within each temperature group. Feed intake, growth, glycogen, glucose, lactate, and protein concentrations of H. gammarus in each group were evaluated. Regardless the dietary treatment, feed intake, cephalothorax protein and glucose, and abdominal glycogen and glucose levels decreased at colder temperature. The effect of lower temperature on growth (SGR and moulting rate declines) and energy metabolism (reduction on cephalothorax glycogen and protein) was more severe in HC-fed lobsters. Results showed that the impact of lower temperature on juvenile H. gammarus can be modulated by diet highlighting the importance of designing optimized diets not only for growth and feed efficiency but also for resilience to environmental variation. |
| Databáze: | OpenAIRE |
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