Phycology جلبک شناسی

نخستین پایگاه اطلاعاتی جلبک شناسی به زبان فارسی

Agmenellum

General appearance of alga? Soft or firm colony (many cells or filaments); or Blue-green algae - cells without organelles.

Colour? green; or blue; or colourless.

Habitat freshwater.

Aquatic type? not recorded.

Free-living or attached? free-living.

Motile? Not motile.

Is mucilage or gelatinous material present? Mucilage present in obvious concentric rings around each cell or group of cells in the colony.; or Mucilage present but not stratified.

Filament: Branching type not recorded.

Filaments in bundles? not recorded.

Filament: Cell arrangement not recorded.

Filament: Filament diameter not recorded.

Cell: Individual cell shape globose or spherical; or ovoid.

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 not recorded.

Cell: Cell diameter not recorded.

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? Mother cell wall absent.

Colony: cell arrangement Cells in groups greater than 4 cells.

Colony: Shape of colony? Rectangular.

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

Colony: Cells in one layer or throughout on periphery or surface layer of colony.

Capable of forming blooms? Not observed.

Distribution Queensland; or New South Wales.

Classification: Division Cyanobacteria (Blue-green algae).

Classification: Class Cyanophyceae.

Classification: Family Microcystaceae.

Reference Komárek et al. (1999), Day et al. (1995:199), Entwisle et al. (1999c).

  
نویسنده : رضا رمضان نژاد قادی ; ساعت ۱٠:۳۳ ‎ق.ظ روز یکشنبه ۱٢ آبان ۱۳۸٧