Malacostraca | 
Cumacea | 
Diastylidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Benthic; depth range 0 - 130 m (Ref. 125264).  Temperate; 82°N -   51°N, 167°W -   84°E			
			
			
				
			
			
			
				Arctic and Northern Atlantic:  from Alaska to Iceland, south to Belgium, north to Franz Josef Land and east to Kara Sea.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm Max length : 0.9 cm TL male/unsexed; (Ref. 7882); max. reported age: 2.00 years (Ref. 129949)			
			
			
						
			
			
			
			
				
					Species' maximum length from the Belgian part of the North Sea (Ref. 7882). Found along the coastal zone, often in fine-grained sediments and mud (Ref. 7882).  Also found in hard bottom (Ref. 117453).  This is a surface deposit feeder (Ref. 96214).  Main food based on another species of the same genus; to be replaced with a better reference (Ref. 96292).				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
					Members of the order Cumacea are gonochoric and sexually dimorphic.  Spawning is characterized by nocturnal swarming behavior.  Females brood the eggs in the marsupium where they molt, become mancas and leave.				
			
			
			
			
			
				Harms, J. 1993 Check list of species (algae, invertebrates and vertebrates) found in the vicinity of the island of Helgoland (North Sea, German Bight) - a review of recent records. Helgoländer Meeresunters 47:1-34. (Ref. 2711)
			
			
			
			
			
			
			
					
						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
			
			
			
							
			
			
			
							
					Resilience  				
				
				
					High, minimum population doubling time less than 15 months (tmax=2).				
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Low vulnerability (10 of 100).					
				
						
						
			
									
						Price category  					
					
					Unknown.