SEAFDEC/AQDINSTITUTIONAL REPOSITORY
    • English
    • 日本語
    • ไทย
    • Bahasa Indonesia
  • English 
    • English
    • 日本語
    • ไทย
    • Bahasa Indonesia
  • Login
View Item 
  •   SEAFDEC/AQD Institutional Repository Home
  • 01 SEAFDEC/AQD Publications
  • Conference Proceedings
  • Feeds for Small-scale Aquaculture
  • View Item
  •   SEAFDEC/AQD Institutional Repository Home
  • 01 SEAFDEC/AQD Publications
  • Conference Proceedings
  • Feeds for Small-scale Aquaculture
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

A preliminary study on the effect of hypoxia on carotenoid metabolism in black tiger shrimp Penaeus monodon Fabricius

  • Global styles
  • MLA
  • Vancouver
  • Elsevier - Harvard
  • APA
  • Help
Thumbnail
View/Open
ffssa_p112.pdf (44.01Kb) Open Access
Downloads: 1,936
Date
1996
Author
Heralde, Francisco III
Leaño, Milagros
Reyes, Angelita
Coloso, Relicardo
Page views
7,461
Subject
carotenoids ASFA
husbandry diseases
hypoxia ASFA
metabolism ASFA
shrimp culture ASFA
Penaeus monodon AGROVOC
Taxonomic term
Penaeus monodon GBIF
Metadata
Show full item record

Share 
 
Abstract
The pigmentation of black tiger shrimp Penaeus monodon is due to astaxanthin, astaxanthin monoester, and astaxanthin diester. These carotenoids are biosynthesized from beta-carotene or zeaxanthin. Biosynthesis is postulated to be mediated by the enzymes C3 and C4 monooxygenase and caroten-4-ol dehydrogenase. Blue-shrimp syndrome, characterized by low total astaxanthin levels in shrimp epidermis, is associated with nutritional deficiency for carotenoids but other factors such as high organic matter, hypoxia, high density, and high pH may also be involved. In this study, the effect of hypoxia on carotenoid metabolism in P. monodon was investigated with respect to retention and transformation of carotenoids and the activity of the enzymes C3 and C4 monooxygenase and caroten-4-ol dehydrogenase.Two tanks were prepared each containing 25 pieces of shrimp fed a control diet (not containing any carotenoid) for two weeks. Shrimps in one tank (Treatment 1) were given beta-carotene supplemented diet (3.8 ppm) in the next two weeks while those in the other (treatment 2) were fed the control diet. Two days after introduction of the test diets, both treatments were subjected to hypoxia challenge (dissolved oxygen, 2.5-2.7 mg/L) and the carotenoid content and profile of feces monitored for succeeding days. Assay of enzyme activity was performed five days after hypoxia challenge. Results showed a ten-fold increase in fecal total carotenoid content of shrimps in treatment 2 (122.2 ppm) compared with that in treatment 1 (12.4 ppm) on hypoxia challenge and restores to basal level (3.9-4.1 ppm) after three days. The carotenoids found in the feces of shrimps in treatment 2 were astaxanthin, astaxanthin monoester, astaxanthin diesters, and an unidentified carotenoid which was also found in the muscle of stressed shrimp. Using beta-carotene as substrate, conversion to astaxanthin was not observed in the hepatopancreas homogenates of shrimps in both treatments. Instead, a slow conversion of astaxanthin to betacarotene (i.e., a reverse reaction) was noted in treatment 2 exhibiting twice the activity in treatment 1. Radiolabelling studies using 14C-labelled astaxanthin as substrate confirmed the existence of this enzyme-mediated reductive pathway from astaxanthin which occurs at a very slow rate. This study demonstrated the carotenoid-depleting effect of hypoxia on shrimp, both through enhanced fecal release and moderately elevated reductive pathway from astaxanthin. This effect suggests a possible mechanism by which blue-shrimp syndrome may develop.
Description
Abstract only
URI
http://hdl.handle.net/10862/543
Type
Conference paper
Collections
  • Feeds for Small-scale Aquaculture [23]

Related items

Showing items related by title, author, creator and subject.

  • Thumbnail

    An overview of the nutrition, feed and feeding techniques of prawn penaeid/shrimps 

    Piedad-Pascual, Felicitas (Philippine Council for Aquatic and Marine Research and Development, 1989)
    This paper echoes what transpired during the first International Conference of Penaeid Prawns/Shrimps held in Iloilo City in December 4-7, 1984, particularly on the Nutrition nd Feed Development. Around 25 papers were ...
  • Thumbnail

    Identifying shrimp fry 

    Southeast Asian Fisheries Development Center, Aquaculture Department (Aquaculture Department, Southeast Asian Fisheries Development Center, 1988)
  • Thumbnail

    Mineral requirements of Penaeids 

    Piedad-Pascual, F. (Institut Francais de Recherche pour l'Exploitation de la Mer, 1990)
    Marine shrimps absorb minerals from their aquatic environment aside from the minerals that come from the food they eat. Thus, the dietary requirement of shrimps for certain minerals will depend on the amounts and availability ...
    Series: Actes de Colloque 9

© SEAFDEC/AQD  2022
Contact Us | Send Feedback
 

 

Browse

All of SAIRCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

LoginRegister

Statistics

View Usage Statistics

© SEAFDEC/AQD  2022
Contact Us | Send Feedback
 

 

Export citations

Export the current results of the search query as a citation list. Select one of the available citation styles, or add a new one using the "Citations format" option present in the "My account" section.

The list of citations that can be exported is limited to items.

Export citations

Export the current item as a citation. Select one of the available citation styles, or add a new one using the "Citations format" option present in the "My account" section.

Export Citations

DOCUMENT REQUEST NOT AVAILABLE

This publication is still available (in PRINT) and for sale at AQD bookstore. The library is currently restricted to send PDF of publications that are still for sale.

You may contact bookstore@seafdec.org.ph or visit AQD bookstore for orders.

FILE UNDER EMBARGO

This file associated with this publication is currently under embargo. This will be available for download after the embargo date.