Aysha Javeed (1) , Sazlina Salleh (2) , Aqilah Darif (3) , Mahadi Mohammad (4)

(1) Centre for Policy Research and International Studies, University Sains Malaysia
(2) Centre for Policy Research and International Studies, University Sains Malaysia
(3) Centre for Policy Research and International Studies; Centre for Marine and Coastal Studies, University Sains Malaysia
(4) School of Biological Sciences; Centre for Marine and Coastal Studies, Universiti Sains Malaysia


This study describes the morphological structure of Thalassiosira spp. found in coastal water and intertidal area of Teluk Bahang, Penang. Examination of the samples collected from January 2015 to June 2016 showed that these species were the common genera in both benthic and surface seawater at Teluk Bahang. To obtain phytoplankton samples, five liters of seawater were filtered through the plankton net (35 µm). While for benthic samples, the samples were collected at sediment surface of 1 mm depth. Samples of Thalassiosira spp. were obtained from both phytoplankton and benthic samples. Scanning electron microscope (SEM) was used to study the morphology of Thalassiosira spp. Results from the SEM showed distinct differences in areolae pattern, sizes, position and number of processes among Thalassiosira spp. (Thalassiosira nanolineata, Thalassiosira densannula, and Thalassiosira gravida). Thalassiosira densannula and Thalassiosira nanolineata were found in both habitats, coastal and benthic area while Thalassiosira gravida was found only in coastal water. Thalassiosira spp. contribute approximately 15% of the total benthic community and approximately 35% of the total phytoplankton community.


Thalassiosira spp.; coastal water; intertidal area; morphology; SEM

Full Text:



Cleve PT. 1873. On diatoms from the Arctic Sea. Stockholm: P.A. Norstedt.

Guiry MD, Guiry GM. 2014. Algae Base. Worldwide electronic publication, National University of Ireland, Galway.

Fryxell GA. 1989. Marine phytoplankton at the Weddell Sea ice edge: seasonal changes at the specific level. Polar Biology. 10(1):1–8.

Hasle GR, Fryxell GA. 1977. The genus Thalassiosira: some species with a linear areola array. In: R. Simonsen (ed.), Proceedings of the fourth symposium on recent and fossil marine diatoms. Oslo: August 30–September 3, 1976. Beihefte zur Nova Hedwigia 54:15–66.

Li Y, Zhao Q, Lü S. 2013. The genus Thalassiosira off the Guangdong coast, South China Sea. Botanica Marina. 56(1):83–110.

Mann A. 1925. Marine diatoms of the Philippine Islands. Bulletin United States National Museum. Indiana University: Govt. Print. off.

Park JS, Lee JH. 2010. A study on the fine structure of the marine diatoms in Korean coastal waters: genus Thalassiosira 5. Algae 25(3):121–131.

Taylor JC, Harding WR, Archibald CGM. 2007. A methods manual for the collection, preparation and analysis of diatom samples version 1.0. WRC Report TT 281/07 January 2007.

Tomas CR. 1997. Identifying marine phytoplankton. San Diego: Elsevier Science Publishing Co Inc.

Article Reads

Total: 1528 Abstract: 988 PDF: 540


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.


Daily Visit

The last two months

View complete Google Analytics report here

This website is maintained by:
Bio Publisher
The Faculty of Biology Publishing

Faculty of Biology
Universitas Jenderal Soedirman
Jalan dr. Suparno 63 Grendeng
Purwokerto 53122

Telephone: +62-281-625865

T his website uses:
OJS | Open Journal System
A free journal management and publishing system that has been developed by the PKP (Public Knowledge Project) version

All article content metadata are registered to:
An official nonprofit  Registration Agency of the International Digital Object Identifier (DOI) Foundation.

Articles in this journal are indexed by:

Complete index list  »