SEAFDECINSTITUTIONAL REPOSITORY
    • English
    • ไทย
    • 日本語
    • Bahasa Indonesia
    • Bahasa Melayu
    • Burmese
    • Filipino
    • Khmer
    • Lao
    • Tiếng Việt
  • English 
    • English
    • ไทย
    • 日本語
    • Bahasa Indonesia
    • Bahasa Melayu
    • Burmese
    • Filipino
    • Khmer
    • Lao
    • Tiếng Việt
  • Login
View Item 
  •   SEAFDEC Institutional Repository (SIR)
  • 03 SEAFDEC External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Conference Proceedings
  • AQD Conference Proceedings
  • View Item
  •   SEAFDEC Institutional Repository (SIR)
  • 03 SEAFDEC External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Conference Proceedings
  • AQD Conference Proceedings
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Microcystins from the cyanobacteria Microcystis aeruginosa in Laguna de Bay, Philippines

Thumbnail
View/Open
Date
2005
Author
Cuvin-Aralar, Maria Lourdes
Page views
464
Metadata
Show full item record

Share 
 
Abstract
Laguna de Bay, the largest freshwater lake in the Philippines, experiences periodic blooms of the cyanobacteria Microcystis aeruginosa. The results of analysis for the presence of the hepatotoxin microcystins in bloom samples of this cyanobacteria from 1996, 1998, 1999 and laboratory cultures from 1997 isolates, based on the studies conducted at Binangonan Freshwater Station of SEAFDEC/AQD are presented. Twenty structural variants of the toxin have been isolated with microcystin LR (MC-LR) being the most abundant form. MC-LR contribution ranged from 22% to almost 100% of the total microcystins in the samples. Microcystis bloom in 1998 had MC-RR as the most dominant form of the toxin with almost 38% followed closely by MC-WR (23%) and MC-LR (22%). The harvest from 1996 had the highest total toxin concentration (4048 µg g-1). Laboratory-cultured M. aeruginosa had even higher total toxin concentrations ranging from 11,472 to 12,160 µg g-1. The presence of high microcystins concentrations in M. aeruginosa from Laguna de Bay has far reaching implications in terms of the use of this resource for fishery and domestic water supply.
URI
http://hdl.handle.net/10862/6125
Suggested Citation
Cuvin-Aralar, M. L. (2005). Microcystins from the cyanobacteria Microcystis aeruginosa in Laguna de Bay, Philippines. In M. L. Cuvin-Aralar, R. S. Punongbayan, A. Santos-Borja, L. V. Castillo, E. V. Manalili, & M. M. Mendoza (Eds.), Proceedings of the First National Congress on Philippine Lakes (pp. 116-122). Southeast Asian Regional Center for Graduate Study and Research in Agriculture (SEARCA).
Subject
toxic substances ASFA; lakes ASFA; nitrogen ASFA; phosphorus ASFA; carbon ASFA; temperature ASFA; light ASFA; iron ASFA; pH ASFA; growth rate ASFA; toxicity ASFA; Laguna de Bay; Microcystis aeruginosa; Cyanobacteria; Microcystin; Toxins; Philippines
Collections
  • AQD Conference Proceedings [298]

© SEAFDEC 2025
Contact Us
 

 

Browse

All of SIRCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

View Usage Statistics
Related Links
SEAFDEC/TD IRSEAFDEC/AQD IRSEAFDEC/MFRDMD IRSEAFDEC/IFRDMD IR

© SEAFDEC 2025
Contact Us