Hydrozoa | 
Leptothecata | 
Sertulariidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Demersal; depth range 1647 - 2044 m (Ref. 7414).  Polar			
			
			
				
			
			
				Distribution				
					Countries | FAO areas | Ecosystems | Occurrences | Introductions				
			
			
				Antarctic Atlantic:  Scotia Sea.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm			
			
			
							
				
				
					
						30mm long, polysiphonic over almost its entire length. Main stem giving rise to three branches on the same side and another branch on the opposite side; branching approximately in
one plane. Hydrothecae alternately arranged in one plane, forming two longitudinal rows. Hydrothecae only slightly immersed into the branches, strongly curved outwards. Adcauline hydrothecal wall free for approximately half of its length. Free adcauline wall straight or slightly convex. Abcauline hydrothecal wall concave. Aperture circular; rim even and usually provided with numerous short renovations, tilted downwards, forming an acute angle with long axis of branch. Hydrotheca lacking mushroom-shaped diaphragm.					
				
				
						
			
			
			
			
				
									
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
					Members of the order Leptothecata include L-form hydroids.  Life cycle:  The zygote develops into planula and later into polyp then into free-swimming medusa.				
			
			
			
			
			
				Peña Cantero, A.L. and W. Vervoort 2003 Species of Staurotheca Allman, 1888 (Cnidaria; Hydrozoa: Sertulariidae) from US Antarctic expeditions, with the description of three new species. Journal of Natural History 37:2653-2722. (Ref. 7414)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (Ref. 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (Ref. 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				Threat to humans  
			
			
				
					  Harmless				
			
			
			
			
			
			
			
			
				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