Hoplonemertea | 
Monostilifera | 
Tetrastemmatidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Benthic; depth range ? - 5 m (Ref. 410).  Boreal			
			
			
				
			
			
			
				Northwest Pacific:  known from coastal waters of Hokkaido and in Far Eastern seas of Russia, it is found in coastal waters of southern and middle Primorè, Kunashir Island, and in Aniva Bay; also found in Peter the Great Bay.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm			
			
			
						
			
			
			
			
				
					Settles in shallows not deeper than 5 m, under stones among bryozoans and calcareous algae (Ref. 410).				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
					Members of the phylum Nemertea are mostly gonochoric.  Life cycle:  Eggs hatch and develop into short-lived lecitotrophic larvae before metamorphosing into juveniles and further into adults.				
			
			
			
			
			
				Chernyshev, A.V. 1998 Nemerteans of the genus Tetrastemma (Enopia, Monostilifera) from seas of the Russian Far East. Russian Journal of Zoology. 2(3):378-385. Translated from Zoologicheskii Zhurnal. 77(9):995-1002. (Ref. 410)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (Ref. 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (Ref. 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				Threat to humans  
			
			
				
					  Harmless				
			
			
			
			
			
			
			
			
				Human uses  
			
			
							
			
			
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					More information				
				
					 Trophic EcologyFood items (preys)
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Predators
  Population dynamicsGrowth
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Length-weight rel.
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  Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae   PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  
			 
			
			
			
				Internet sources
			
			
			
			
			
				Estimates based on models
			
			
			
							
			
			
			
			
			
						
						
						
			
									
						Price category  					
					
					Unknown.