Seasonal dynamics in the occurrence and abundance of Pseudo-nitzschia species in the Maheshkhali channel of the Bay of Bengal, Bangladesh
Occurrence and abundance of Pseudo-nitzschia spp. at the mouth of the Maheshkhali channel of the Bay of Bengal, Bangladesh were studied. Plankton and water samples were collected monthly from the sub-surface water during high tide at daytime from June 2000 to May 2001. Four species of Pseudo-nitzschia, namely P. pungens, P. pseudodelicatissima, P. delicatissima and P. australis were identified and among them the first three were most commonly encountered and they varied seasonally. Pseudo-nitzschia delicatissima was the dominant species during the autumn and winter months, whereas P. pungens was dominant during the summer and spring months. Pseudo-nitzschia pseudodelicatissima exhibited its highest abundance level during the summer. Surface water temperature, salinity, nitrate-nitrogen (N03-N) and phosphate-phosphorus (P04-P) were recorded and their relationship with the occurrence and abundance ofPseudo-nitzschia species were studied. At the mouth of the Maheshkhali channel, Pseudo-nitzschia cell density was highest in late autumn (November) when highest salinity (35 o/oo) and P04-P (3.2 mg/l) concentrations and low temperature (23 °C) were recorded.
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Format: | article biblioteca |
Language: | English |
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2005
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Subjects: | Fisheries, Pseudo-nitzschia, Maheshkhali channel, Bay of Bengal, |
Online Access: | http://hdl.handle.net/1834/33282 |
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dig-aquadocs-1834-332822021-06-30T02:55:39Z Seasonal dynamics in the occurrence and abundance of Pseudo-nitzschia species in the Maheshkhali channel of the Bay of Bengal, Bangladesh Jewel, M.A.S. Khan, S. Haque, M.M. Fisheries Pseudo-nitzschia Maheshkhali channel Bay of Bengal Occurrence and abundance of Pseudo-nitzschia spp. at the mouth of the Maheshkhali channel of the Bay of Bengal, Bangladesh were studied. Plankton and water samples were collected monthly from the sub-surface water during high tide at daytime from June 2000 to May 2001. Four species of Pseudo-nitzschia, namely P. pungens, P. pseudodelicatissima, P. delicatissima and P. australis were identified and among them the first three were most commonly encountered and they varied seasonally. Pseudo-nitzschia delicatissima was the dominant species during the autumn and winter months, whereas P. pungens was dominant during the summer and spring months. Pseudo-nitzschia pseudodelicatissima exhibited its highest abundance level during the summer. Surface water temperature, salinity, nitrate-nitrogen (N03-N) and phosphate-phosphorus (P04-P) were recorded and their relationship with the occurrence and abundance ofPseudo-nitzschia species were studied. At the mouth of the Maheshkhali channel, Pseudo-nitzschia cell density was highest in late autumn (November) when highest salinity (35 o/oo) and P04-P (3.2 mg/l) concentrations and low temperature (23 °C) were recorded. 2021-06-24T17:29:10Z 2021-06-24T17:29:10Z 2005 article 1026-6690 http://hdl.handle.net/1834/33282 en application/pdf application/pdf 169-174 http://aquaticcommons.org/id/eprint/17831 12051 2015-09-18 18:47:32 17831 Bangladesh Fisheries Research Institute |
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Fisheries Pseudo-nitzschia Maheshkhali channel Bay of Bengal Fisheries Pseudo-nitzschia Maheshkhali channel Bay of Bengal |
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Fisheries Pseudo-nitzschia Maheshkhali channel Bay of Bengal Fisheries Pseudo-nitzschia Maheshkhali channel Bay of Bengal Jewel, M.A.S. Khan, S. Haque, M.M. Seasonal dynamics in the occurrence and abundance of Pseudo-nitzschia species in the Maheshkhali channel of the Bay of Bengal, Bangladesh |
description |
Occurrence and abundance of Pseudo-nitzschia spp. at the mouth of the Maheshkhali channel of the Bay of Bengal, Bangladesh were studied. Plankton and water samples were collected monthly from the sub-surface water during high tide at daytime from June 2000 to May 2001. Four species of Pseudo-nitzschia, namely P. pungens, P. pseudodelicatissima, P. delicatissima and P. australis were identified and among them the first three were most commonly encountered and they varied seasonally. Pseudo-nitzschia delicatissima was the dominant species during the autumn and winter months, whereas P. pungens was dominant during the summer and spring months. Pseudo-nitzschia pseudodelicatissima exhibited its highest abundance level during the summer. Surface water temperature, salinity, nitrate-nitrogen (N03-N) and phosphate-phosphorus (P04-P) were recorded and their relationship with the occurrence and abundance ofPseudo-nitzschia species were studied. At the mouth of the Maheshkhali channel, Pseudo-nitzschia cell density was highest in late autumn (November) when highest salinity (35 o/oo) and P04-P (3.2 mg/l) concentrations and low temperature (23 °C) were recorded. |
format |
article |
topic_facet |
Fisheries Pseudo-nitzschia Maheshkhali channel Bay of Bengal |
author |
Jewel, M.A.S. Khan, S. Haque, M.M. |
author_facet |
Jewel, M.A.S. Khan, S. Haque, M.M. |
author_sort |
Jewel, M.A.S. |
title |
Seasonal dynamics in the occurrence and abundance of
Pseudo-nitzschia species in the Maheshkhali channel of the Bay of Bengal, Bangladesh |
title_short |
Seasonal dynamics in the occurrence and abundance of
Pseudo-nitzschia species in the Maheshkhali channel of the Bay of Bengal, Bangladesh |
title_full |
Seasonal dynamics in the occurrence and abundance of
Pseudo-nitzschia species in the Maheshkhali channel of the Bay of Bengal, Bangladesh |
title_fullStr |
Seasonal dynamics in the occurrence and abundance of
Pseudo-nitzschia species in the Maheshkhali channel of the Bay of Bengal, Bangladesh |
title_full_unstemmed |
Seasonal dynamics in the occurrence and abundance of
Pseudo-nitzschia species in the Maheshkhali channel of the Bay of Bengal, Bangladesh |
title_sort |
seasonal dynamics in the occurrence and abundance of
pseudo-nitzschia species in the maheshkhali channel of the bay of bengal, bangladesh |
publishDate |
2005 |
url |
http://hdl.handle.net/1834/33282 |
work_keys_str_mv |
AT jewelmas seasonaldynamicsintheoccurrenceandabundanceofpseudonitzschiaspeciesinthemaheshkhalichannelofthebayofbengalbangladesh AT khans seasonaldynamicsintheoccurrenceandabundanceofpseudonitzschiaspeciesinthemaheshkhalichannelofthebayofbengalbangladesh AT haquemm seasonaldynamicsintheoccurrenceandabundanceofpseudonitzschiaspeciesinthemaheshkhalichannelofthebayofbengalbangladesh |
_version_ |
1756079071439093760 |