Ascidiacea | 
Stolidobranchia | 
Pyuridae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Sessile; depth range 30 - 100 m (Ref. 116516).  Temperate			
			
			
				
			
			
			
				Northern Atlantic, Northern Pacific and the Arctic:  Alaska, Canadian Arctic Archipelago, and Europe.  Temperate to polar climates.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm Max length : 8.0 cm BL male/unsexed; (Ref. 7726)			
			
			
						
			
			
			
			
				
					Known from subtidal to deep water on hard substrates; encrusted with marine plants and bryozoans.  Thrives in current and surge swept areas (Ref. 7726).				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
					Members of the class Ascidiacea are hermaphroditic; both cross- and self-fertilization is typical.  Life cycle:  Eggs develop into lecithotrophic larva before metamorphosing into benthic adults.				
			
			
			
			
			
				Hansson, H.G. 1989 NEAT (North East Atlantic Taxa): South Scandinavian marine Chordata check-list. http://www.tmbl.gu.se [accessed 05/04/2007] (Ref. 3399)
			
			
			
			
			
			
			
					
						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 compositionFood consumptionPredators   Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae   PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  
			 
			
			
			
				Internet sources
			
			
			
			
			
				Estimates based on models
			
			
			
									
						Preferred temperature  					
				 (Ref. 
115969): 0.5 - 10.3, mean 3.5 (based on 1095 cells).			
 
			
			
			
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Low vulnerability (10 of 100).					
				
						
						
			
									
						Price category  					
					
					Unknown.