Phycology جلبک شناسی

نخستین پایگاه اطلاعاتی جلبک شناسی به زبان فارسی

معرفی جنس Arthrospira




General appearance of alga? Unbranched filaments; or Blue-green algae - cells without organelles.


Colour? yellow.


Habitat freshwater; or terrestrial.


Aquatic type? lake; or pond; or bogs; or puddles and ditches.


Free-living or attached? free-living; or attached in sand or soil.


Motile? Not motile.


Is mucilage or gelatinous material present? Absent.


Filament: Branching type not recorded.


Filaments in bundles? not recorded.


Filament: Cell arrangement cells abutting.


Filament: Filament diameter not recorded.


Cell: Individual cell shape cylindrical.


Cell: Is there a median constriction (isthmus)? Absent.


Cell: Do the cells bear spines or cellular extensions? Absent.


Cell: How many flagella per cell? Absent.


Cell: Is a red eyespot conspicuous? no.


Cell: Heterocytes absent.


Cell: Akinetes absent.


Cell: Cell length 2–5 µm.


Cell: Cell diameter 2–8 µm.


Cell: How many pyrenoids per plastid? 0.


Cell: How many plastids? 0.


Cell: Plastid shape? not recorded.


Cell: Position of plastid in cell? not recorded.


Colony: Are remnants of the mother cell wall present or is the entire mother cell wall persistent? not recorded.


Colony: cell arrangement not recorded.


Colony: Shape of colony? not recorded.


Colony: Are cells or groups of cells connected by mucilaginous threads? No.


Colony: Cells in one layer or throughout not recorded.


Capable of forming blooms? Not observed.



Classification: Division Cyanobacteria (Blue-green algae).


Classification: Class Cyanophyceae.


Classification: Family Oscillatoriaceae.



Reference Dillard (1999:115), Day et al. (1995:209), Entwisle et al. (1999c).

نویسنده : رضا رمضان نژاد قادی ; ساعت ٢:٠۳ ‎ق.ظ روز چهارشنبه ۱٥ فروردین ۱۳۸٦