Phycology جلبک شناسی

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معرفی جنس Aphanochaete

Aphanochaete

 

 

 

General appearance of alga? Simple branched algae one cell thick.

 

Colour? green.

 

Habitat freshwater.

 

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

 

Free-living or attached? attached to plants or algae.

 

Motile? Not motile.

 

Is mucilage or gelatinous material present? Absent.

 

Filament: Branching type true branching.

 

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? Present.

 

Cell: How many flagella per cell? Absent.

 

Cell: Is a red eyespot conspicuous? no.

 

Cell: Heterocytes absent.

 

Cell: Akinetes absent.

 

Cell: Cell length 6–20 µm.

 

Cell: Cell diameter 5–10 µm.

 

Cell: How many pyrenoids per plastid? 1–10.

 

Cell: How many plastids? 1.

 

Cell: Plastid shape? sheet or longitudinal plate.

 

Cell: Position of plastid in cell? Parietal.

 

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 Chlorophyta (Green Algae).

 

Classification: Class Chlorophyceae.

 

Classification: Family Chaetophoraceae.

 

 

 

Reference Smith (1950:163), Prescott (1951:125), Dillard (1999:135), Ling et al. (2000:126), Day et al. (1995:50), Entwisle et al. (1999c).

 

 

 

 

 

 

 

 

 

 

 

  
نویسنده : رضا رمضان نژاد قادی ; ساعت ۱۱:۱۳ ‎ب.ظ روز چهارشنبه ٢ اسفند ۱۳۸٥