Phycology جلبک شناسی

نخستین پایگاه اطلاعاتی جلبک شناسی به زبان فارسی

معرفی جنس Arthrodesmus

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