Digestive enzyme activities during pejerrey (Odontesthes bonariensis) ontogeny
Visualitza/Obre
Autor/a
Pérez-Sirkin, Daniela I.
Solovyev, Mikhail
Delgadin, Tomás H.
Herdman, Javier E.
Miranda, Leandro A.
Somoza, Gustavo M.
Vissio, Paula G.
Data de publicació
2020-02-22ISSN
0044-8486
Resum
The first step for assessing and refining the nutritional requirements during the larval and early juvenile stages of a fish is the study of the ontogeny of digestive system functionality. The combination of these studies with ecological and anatomical knowledge of the species of interest establishes the base for facing one of the major aquaculture challenges: promoting larvae growth and survival. Considering this, changes in the activity of the main digestive (pancreatic and intestinal) enzymes during larval development of the agastric South America pejerrey (Odontesthes bonariensis) were described in the present work. Digestive enzymes for protein, lipid, and carbohydrate hydrolysis were present from the first-week post-hatching (6.85 ± 0.07 mm total length, TL). Changes in the activity of trypsin, chymotrypsin, and alkaline protease indicated that the exocrine pancreas in pejerrey achieves its functional development at the 2nd week post-hatching (9.22 ± 0.17 mm TL). Interestingly, α-amylase and maltase total activity progressively increased over development, suggesting that gradual incorporation of dietary carbohydrates in a feeding protocol may have a protein-sparing effect, as well as a cheap and fast way to obtain energy for the development and growth of pejerrey. The analysis of intestinal enzymes revealed that the typical shift between intracellular and luminal protein digestion that occurs during larval development in gastric species does not take place in pejerrey, indicating that in agastric species intracellular protein digestion plays a major role in comparison to luminal digestion during larval development. Contrary to gastric species, our results suggest that the ratio of alkaline phosphatase to leucine-aminopeptidase for evaluating gut maturation in agastric species is not recommended, and other parameters should be measured when evaluating the maturation process in fish larvae from this group of species.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
Anglès
Matèries (CDU)
639 - Caça. Pesca. Piscicultura
Pàgines
34
Publicat per
Elsevier
Publicat a
Aquaculture
Citació
Pérez-Sirkin, Daniela I., Mikhail Solovyev, Tomás H. Delgadin, Javier E. Herdman, Leandro A. Miranda, Gustavo M. Somoza, Paula G. Vissio, and Enric Gisbert. 2020. "Digestive Enzyme Activities During Pejerrey (Odontesthes Bonariensis) Ontogeny". Aquaculture 524: 735151. Elsevier BV. doi:10.1016/j.aquaculture.2020.735151.
Número de l'acord de la subvenció
MICIU/Programa Estatal de I+D+I orientada a los retos de la sociedad/117RT0521/ES/Estrategias de desarrollo y mejora de la producción de larvas de peces en Iberoamerica/LARVAplus
Programa
Aqüicultura
Aquest element apareix en la col·lecció o col·leccions següent(s)
- ARTICLES CIENTÍFICS [2549]
Els següents fitxers sobre la llicència estan associats a aquest element:
Excepte que s'indiqui una altra cosa, la llicència de l'ítem es descriu com http://creativecommons.org/licenses/by-nc-nd/4.0/