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Early anatomical development of the digestive system and high intestinal digestive enzyme activity in two silverside species, Odontesthes bonariensis and O. hatcheri (Atherinomorpha: Atherinopsidae) Elva


 
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1. Title Title of document Early anatomical development of the digestive system and high intestinal digestive enzyme activity in two silverside species, Odontesthes bonariensis and O. hatcheri (Atherinomorpha: Atherinopsidae) Elva
 
2. Creator Author's name, affiliation, country Elva Mayra Toledo-Cuevas; Universidad Michoacana de San Nicolás de Hidalgo, 58880 Morelia, Michoacán, Mexico; Mexico
 
2. Creator Author's name, affiliation, country María Cristina Chávez-Sánchez; CIAD, A.C. *CORRESPONDING AUTHOR; Mexico
 
2. Creator Author's name, affiliation, country María Antonia Herrera-Vargas; Universidad Michoacana de San Nicolás de Hidalgo; Mexico
 
2. Creator Author's name, affiliation, country Selene María Abad Rosales; CIAD, A.C.; Mexico
 
2. Creator Author's name, affiliation, country Evangelina Cortés Ortiz; Universidad Michoacana de San Nicolás de Hidalgo; Mexico
 
2. Creator Author's name, affiliation, country Carlos Augusto Strüssmann; Tokyo University of Marine Science and Technology; Japan
 
2. Creator Author's name, affiliation, country María Gisela Ríos-Durán; Universidad Michoacana de San Nicolás de Hidalgo; Mexico
 
2. Creator Author's name, affiliation, country Luciana Raggi; Universidad Michoacana de San Nicolás de Hidalgo; Mexico
 
3. Subject Discipline(s)
 
3. Subject Keyword(s) Odontesthes; pejerrey; cytosolic and membranal, digestive system development, histology, intestinal activities
 
4. Description Abstract Integrative studies are important for a better understanding of the functional development of fish digestive systems and the consequent design of suitable feeding regimes and ad-hoc diets. To characterize the ontogeny of digestive function in larvae and juveniles of two atherinopsids from South America, Odontesthes bonariensis and O. hatcheri, morphologic, histologic, and intestinal enzyme biochemical analyses were performed. Both species showed a functional digestive system from one week after hatching (wah) with a sustained high-level activity of the cytosolic enzyme leucine alanine peptidase (leu-ala) until 9 and 13 wah in O. hatcheri and O. bonariensis, respectively. Maximum specific leu-ala activities in both species were higher compared to other agastric and most gastric fish. These results and the abundant pinocytic vacuoles in the posterior intestine suggest that cytosolic digestion is crucial for these species. It seems that their apparent anatomically simple digestive system is compensated by an uncommonly early development and function of the digestive tract and accessory organs accompanied by high intestinal cytosolic activity. The above findings contribute to the understanding of the Atherinopsidae digestive model and, for the first time, suggest that under farming conditions, these species could be weaned at an early developmental stage with an appropriate balanced diet.
 
5. Publisher Organizing agency, location Pontificia Universidad Católica de Valparaíso
 
6. Contributor Sponsor(s) CONACyT (CB-2006-61167, CB-2007-83920, 104194 and 94136); Cooperación bilateral México-Japón (JSPS, RC 20922001); COECYT (08-02/151); CIC-UMNSH; MAHV and ECO received fellowships during master’s degree studies from CONACyT and COECyT
 
7. Date (YYYY-MM-DD) 2024-06-30
 
8. Type Status & genre Peer-reviewed Article
 
8. Type Type
 
9. Format File format PDF
 
10. Identifier Uniform Resource Identifier https://lajar.cl/index.php/rlajar/article/view/vol52-issue3-fulltext-3155
 
10. Identifier Digital Object Identifier (DOI) https://doi.org/10.3856/vol52-issue3-fulltext-3155
 
11. Source Title; vol., no. (year) Latin American Journal of Aquatic Research; Vol 52, No 3 (2024)
 
12. Language English=en en
 
13. Relation Supp. Files Cover Letter (150KB)
Figure 1 (165KB)
Figure 2 (2MB)
Figure 3 (379KB)
 
14. Coverage Geo-spatial location, chronological period, research sample (gender, age, etc.)
 
15. Rights Copyright and permissions Copyright (c) 2024 Latin American Journal of Aquatic Research