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

Sonia Munir; Zaib-un-nisa Burhan; Tahira Naz; P. J. A. Siddiqui; Steve L. Morton

doi:10.1007/s00343-013-2150-y

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

OriginalPaper | Updated：2023-05-16

- Morphotaxonomy and seasonal distribution of planktonic and benthic Prorocentrales in Karachi waters, Pakistan Northern Arabian Sea
- Morphotaxonomy and seasonal distribution of planktonic and benthic Prorocentrales in Karachi waters, Pakistan Northern Arabian Sea
- 海洋湖沼学报（英文） 2013年31卷第2期页码：267-281
- Affiliations：
  
  1. Centre of Excellence in Marine Biology University of Karachi
  2. National Oceanic and Atmospheric Administrations
- Author bio：
- Funds：
  
  Supported by Scholarship (IRSIP) of Higher Education Commission, Islamabad, Pakistan for Doctoral student Miss. Sonia Munir
- DOI：10.1007/s00343-013-2150-y
  中图分类号：
- 网络首发：2013-03-07，
  
  纸质出版：2013
- Accepted：
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Morphotaxonomy and seasonal distribution of planktonic and benthic Prorocentrales in Karachi waters, Pakistan Northern Arabian Sea[J]. 海洋湖沼学报（英文）, 2013,31(2):267-281.

Munir, S., Burhan, Zun., Naz, T. et al. Morphotaxonomy and seasonal distribution of planktonic and benthic Prorocentrales in Karachi waters, Pakistan Northern Arabian Sea., Chin. J. Ocean. Limnol. 31, 267–281 (2013). https://doi.org/10.1007/s00343-013-2150-y
Morphotaxonomy and seasonal distribution of planktonic and benthic Prorocentrales in Karachi waters, Pakistan Northern Arabian Sea[J]. 海洋湖沼学报（英文）, 2013,31(2):267-281. DOI： 10.1007/s00343-013-2150-y.

Munir, S., Burhan, Zun., Naz, T. et al. Morphotaxonomy and seasonal distribution of planktonic and benthic Prorocentrales in Karachi waters, Pakistan Northern Arabian Sea., Chin. J. Ocean. Limnol. 31, 267–281 (2013). https://doi.org/10.1007/s00343-013-2150-y DOI：

摘要

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.

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references

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