Caption: Fresh water centric diatom frustule (skeleton) - Cyclotella sp. This fresh water diatom is found in the brackish water interface of polluted streams and lakes. Diatoms are a type of algae (Chromophyta, Bacillariophyceae). They consist of two valves, made of silica (hydrated silicon dioxide), which fit together like the top and bottom of a box. This SEM shows the surface of one valve and the broad "girdle" connecting it to the other valve. The exterior of the valves are often highly decorative, with pores, spikes or other types of projections. It is an important alga in the fresh water food chain.
Magnification*: x1,400
Type: SEM
Copyright 2008 Dennis Kunkel Microscopy, Inc.
Keywords: 251093E,algae,diatom,alga,centric,centric diatom,Kaiwanui marsh,Hawaii,Coscinodiscus,05.01.08,aquatic,eukaryote,frustule,frustules,silica frustule,silica skeleton,fresh water phytoplankton,fresh water plankton,freshwater phytoplankton,freshwater plankton,phytoplankton,plankton,SEM,diatoms,Chromophyta,Bacillariophyceae,diatom valve,diatom valves,valve,valves,glass frustule,glass frustules,glass skeleton,glass skeletons,hydrated silicon dioxide,silica,silicon,silicon dioxide,fresh water food chain,freshwater food chain,food chain,unicelluar alga,unicelluar algae