Phycology جلبک شناسی

نخستین پایگاه اطلاعاتی جلبک شناسی به زبان فارسی

معرفی جنس Arthrodesmus




General appearance of alga? Non-motile microalgae (single cells).


Colour? green.


Habitat freshwater.


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


Free-living or attached? free-living.


Motile? not recorded.


Is mucilage or gelatinous material present? Absent.


Filament: Branching type not recorded.


Filaments in bundles? not recorded.


Filament: Cell arrangement not recorded.


Filament: Filament diameter not recorded.


Cell: Individual cell shape other.


Cell: Is there a median constriction (isthmus)? not recorded.


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


Cell: How many flagella per cell? Absent.


Cell: Is a red eyespot conspicuous? no.


Cell: Heterocytes absent.


Cell: Akinetes absent.


Cell: Cell length not recorded.


Cell: Cell diameter not recorded.


Cell: How many pyrenoids per plastid? not recorded.


Cell: How many plastids? not recorded.


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 recorded.



Classification: Division Chlorophyta (Green Algae).


Classification: Class Zygnematophyceae.


Classification: Family Desmidaceae.



Reference Bourelly (1966:432), Dillard (1999:41), Whitford et al. (1973:75), Day et al.

(1995:77), Entwisle et al. (1999c).



نویسنده : رضا رمضان نژاد قادی ; ساعت ۱:٥٩ ‎ق.ظ روز چهارشنبه ۱٥ فروردین ۱۳۸٦