Document Detail


Changes in digestive enzyme activity during initial ontogeny of bay snook Petenia splendida.
MedLine Citation:
PMID:  21327498     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Several samples of P. splendida larvae were obtained from eggs until day 60 after hatching (dah) to determine acid and alkaline proteases, trypsin, chymotrypsin, leucine aminopeptidase, α-amylase, lipase, and acid and alkaline phosphatase activities using biochemical techniques. Additionally, SDS-PAGE alkaline protease zymogram and PAGE acid protease zymogram were carried out to identify active isoforms during larviculture. Alkaline protease and chymotrypsin were present at the moment of hatching, increased gradually reaching the maximum values at 35 dah. Trypsin and leucine aminopeptidase activities were low from hatching, increasing gradually as larvae grew. Alkaline protease zymogram showed four zymogens, which appears at different days, remaining present until the end of the larviculture (95.2 kDa at 11 dah, 26.4 kDa at 9 dah, 21.4 kDa at 3 dah, and 23.3 kDa at hatching). Pepsin activity was present at day 7 after hatching and increased progressively until the end of the larviculture. Acid protease zymogram only showed one zymogen (0.65 rf), which appear at 6 dah. Lipase was high at the time of hatching and increased until 15 dah, after which decreased gradually. Amylase was high from the beginning and until 15 dah and then decreased rapidly to almost nothing onward. Alkaline and acid phosphatases presented a high activity at the egg stage, fell slightly during the first feeding and increased again from 20 to 30 dah. Results obtained in this study show that larvae can be fed artificial diets starting on day 10 after hatching.
Authors:
A Uscanga-Martínez; N Perales-García; C A Alvarez-González; F J Moyano; D Tovar-Ramírez; G E Gisbert; G Márquez-Couturier; W M Contreras-Sánchez; L Arias-Rodríguez; J R Indy
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-13
Journal Detail:
Title:  Fish physiology and biochemistry     Volume:  -     ISSN:  1573-5168     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100955049     Medline TA:  Fish Physiol Biochem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Departamento de Biología Aplicada, Escuela Politécnica Superior, La Cañada de San Urbano, Universidad de Almería, 04120, Almería, Spain.
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