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Anthopleura elegantissima

“Splitting up is hard to do”

This fellow tears itself apart

All these are same clone (or they would be ‘fighting’)

 

Take home

 

Clones itself to capture available habitat

 

Fights” other clones with specialized weapons (Acrorhagi)

 

Endosymbiont may be either green or Dinoflagellate algae

 

See below

Endosymbionts

While I worked this photo up to show the rounded turbercles (called verrucae)  which distinguish it from A xanthogrammica --- I now note the green color is not so bright as others on this page --- indicates to me that has the ‘other’ symbiont in high ratio (if not exclusively) – actually 3 sybionts have been found Symbiodinium californium and Symbiodinium muscatinei; LaJeunesse and Trench 2000) and at least one zoochlorella (green cells in the phylum Chlorophyta

 

Does this fellow look belligerent?

Those white colored bulbs are called acrorhagi --- they are filled with ‘weapons’ called nematocysts – which one source claims = 40T grams of acceleration when ‘exploded’ from launcher
War between clones in Santa Barbara captured these images -- note inflated and then tattered after battle

Here is intra species aggression by similar species from UK

 

 

 

ITIS systematics – Google images

BioOne articles – 8 at time accessed;

--- several on cloning evolution in anemones – stretching (as above) leads cascade cell changes;
Or compared DNA eastern and western Pacific – argues cloning and symbiosis arose several times in Anthopleura

Behind enemy lines – scouts and battles – a ‘popular’ aspect of this anemone

 

 

 

 

 

 

Created by LG on MAY/11/2005

Last updated on Wednesday, October 19, 2005