Polyplacophora | 
Chitonida | 
Tonicellidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Benthic; depth range 0 - 115 m (Ref. 289).  Temperate			
			
			
				
			
			
			
				Pacific Ocean.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm Max length : 5.1 cm TL male/unsexed; (Ref. 296)			
			
			
							
				
				
					
						Girdle:  Microscopically granulated showing concentric growth lines.  Lateral areas:  Scarcely definable by a slightly raised wide rib.  Valves:  Variable in design and in color; range from orange-red to deep blood reds or lavenders with white zigzag markings.  Markings:  Edged in blue in live specimens but the blue color fades quickly in alcohol or in dried specimens.  Girdle in alcohol:  Cream colored, fading from orange in live specimens (Ref. 296).					
				
				
						
			
			
			
			
				
					Intertidal to 115 m (Ref. 289).  Abundant in the intertidal zone, and, in some localities, can exceed 50 individuals per square meter of surface area.  Lives on cobbles, boulders, and bedrock encrusted with pink coralline algae (Lithothamnion spp.) or unidentified rust-brown encrusting bryozoans (Ref. 290).  Herbivorous, feeding primarily on encrusted red coralline algae (Ref. 312).				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
					Reproduction:  The annual spawning cycle may be cued by spring phytoplankton (Ref. 290).				
			
			
			
			
			
				Dickson, R. 2002 Chitons of British Columbia. Royal British Columbia Museum. http://www.royalbcmuseum.bc.ca/nh_papers/chitonkey/intro.htm[accessed25/01/06] (Ref. 290)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (Ref. 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (Ref. 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				Threat to humans  
			
			
				
									
			
			
			
			
			
			
			
			
				Human uses  
			
			
							
			
			
				 | FishSource | 			
			
			
			
			
			
Tools
			
			
			
			
				
					More information				
				
					 Population dynamicsGrowth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
  Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae   PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  				 
			 
			
			
			
				Internet sources
			
			
			
			
			
				Estimates based on models
			
			
			
									
						Preferred temperature  					
				 (Ref. 
115969): 5.7 - 15.4, mean 9.7 (based on 344 cells).			
 
			
			
			
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Low vulnerability (10 of 100).					
				
						
						
			
									
						Price category  					
					
					Unknown.