Polyplacophora | 
Callochitonida | 
Callochitonidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Benthic.  Temperate			
			
			
				
			
			
			
				Northwest Atlantic and Eastern Pacific:  USA and Mexico.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm Max length : 5.1 cm TL male/unsexed; (Ref. 296)			
			
			
							
				
				
					
						Girdle:  Medium wide; sandy, fleshy and thickly covered with bristles.  Murco:  Highly posterior.  Central areas:  Granulose cross ribbing with those cross ribs coming from the jugal area heavier until they meet midway the heavier cross ribs coming from the lateral areas.  Lateral areas:  Broad-ribbed.   Color of valves:  Black with occasional white stripe down sides of dorsal ridge.   Color of girdle:  Cream with reddish brown hairs and granular (Ref. 296).					
				
				
						
			
			
			
			
				
					Habitat:  Intertidal (Ref. 289); found in mid to high tide zones from Puget Sound to Mexico on rocks, in crevices or among barnacles and mussels (Ref. 312).  Occurs from mid to high tide mark.				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
					Members of the class Polyplacophora are mostly gonochoric.  Life cycle:  Eggs hatch into lecitotrophic planktonic trocophore larvae (no veliger stage) which later metamorphose and settle on the bottom as young adults.				
			
			
			
			
			
				Burghardt, G. and L. Burghardt 2006 West Coast Chitons. A Gallery of Worlwide Chitons: http://home.inreach.com/burghart/wcoast.html[accessed20/01/06] (Ref. 296)
			
			
			
			
			
			
			
					
						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				
				
					 Trophic EcologyFood items (preys)
Diet composition
Food consumption
Predators
  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): 9.6 - 20.2, mean 12.9 (based on 161 cells).			
 
			
			
			
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Low vulnerability (10 of 100).					
				
						
						
			
									
						Price category  					
					
					Unknown.