NDLI: Morphotaxonomy and seasonal distribution of planktonic and benthic Prorocentrales in Karachi waters, Pakistan Northern Arabian Sea

Content Provider	Springer Nature Link
Author	Munir, Sonia Burhan, Zaib un nisa Naz, Tahira Siddiqui, P. J. A. Morton, Steve L.
Copyright Year	2013
Abstract	Morphotaxonomy and seasonal abundance of dinoflagellates of the genera Prorocentrum and Mesoporos (Prorocentrales) were studied from nutrient-rich waters, Karachi Harbor and the mouth of the Manora Channel, Pakistan during May 2002–July 2003. Using both light and scanning electron microscopy, 13 species of Prorocentrales were identified according to cell shape, size, ornamentation of thecal plates, and architecture of apical platelets, apical pore area, marginal pores, and intercalary bands. P. sigmoides, P. arcuatum, P. scutellum, P. donghaiense, P. balticum, P. minimum, P. emarginatum, P. lima, P. faustiae, and Mesoporos perforatus constitute new records for sindh coast of Pakistan. The most abundant species were P. minimum/P. balticum (4.5×103 cells/L), P. micans (1.1×103 cells/L), P. gracile / P. sigmoides (2.5×10 2 cells/L) and P. donghaiense (6.6×103 cells/L) at temperatures of 29–31°C and salinities of 35–40. Maximum abundance was observed in winter and lower abundance in summer. There was no significant change in the distribution of species between stations except for the benthic species which occurred close to Karachi Harbor waters. Significant positive correlations were observed between Prorocentrum spp. and temperature ( R 2 =0.27) and negative correlations with salinity ( R 2 =−0.32) except for P. minimum and P. emarginatum which has negative correlation with temperature (R 2 =−0.24) and positive with salinity (R 2 =0.08, 0.19). The finding of potential okadaic-acid producing species of benthic Prorocentrum call for monitoring for possible human health problems in this region.
Starting Page	267
Ending Page	281
Page Count	15
File Format	PDF
ISSN	02544059
Journal	Chinese Journal of Oceanology and Limnology
Volume Number	31
Issue Number	2
e-ISSN	19935005
Language	English
Publisher	SP Science Press
Publisher Date	2013-03-07
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	ecology morphology planktonic/benthic Prorocentrales harmful algae scanning electron microscopy northern Arabian Sea Oceanography
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Oceanography

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