Please use this identifier to cite or link to this item:
http://nopr.niscpr.res.in/handle/123456789/13269| Title: | Occurrence of red tide caused by Karenia mikimotoi (toxic dinoflagellate) in the Southwest coast of India |
| Authors: | Madhu, N V Reny, P D Paul, Meenu Ullas, N Resmi, P |
| Keywords: | Dinoflagellate bloom;Karenia mikimotoi;Cochin estuary |
| Issue Date: | Dec-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Intense brownish discoloration was observed in the surface waters of Cochin barmouth on 21st October 2009, which found to extend a few kilometers in the coastal waters. Continuous monitoring was carried out in the region for a period of 5 days (21st to 25th October 2009) and generated data on changes in water quality and phytoplankton community associated with the bloom. Relatively high level of inorganic nutrients (ammonia 0.5-9.7 µM, nitrate 1.3-2.9 µM, phosphate 1-2.3 µM, silicate 23.5-39.9 µM) and chlorophyll a (av. 56.8 ± 23.7 mg m-3) concentration were observed during the bloom period. Microscopic analysis revealed that the discoloration was caused by an unarmored toxic dinoflagellate, Karenia mikimotoi Miyake & Kominami ex Oda (Karenia, Gymnodiniaceae) belongs to Gymnodiniales, which cause massive fish mortality by releasing hemolytic compounds. |
| Page(s): | 821-825 |
| ISSN: | 0975-1033 (Online); 0379-5136 (Print) |
| Appears in Collections: | IJMS Vol.40(6) [December 2011] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJMS 40(6) 821-825.pdf | 184.69 kB | Adobe PDF | View/Open |
Items in NOPR are protected by copyright, with all rights reserved, unless otherwise indicated.