Gastropoda | 
Trochida | 
Calliostomatidae
			
			
			
				Environment: milieu / climate zone / गहराई सीमा / distribution range				
				
					पारिस्थितिकी				
				
			
			
				;  गहराई सीमा 0 - 30 m (संदर्भ 95344).  Temperate			
			
			
				
			
			
			
				Eastern Pacific and the Arctic:  from Alaska to Mexico.  Subtropical to polar.
			
			
			
			
			
				Length at first maturity / आकार / Weight / Age
			
			
				परिपक्व अवधि: Lm ?  range ? - ? cm Max length : 2.5 cm SHD पुल्लिंग / अलिंग; (संदर्भ 95344); common length : 3.0 cm TL पुल्लिंग / अलिंग; (संदर्भ 312)			
			
			
							
				
				
					
						Description:  Shell has 3 whorls; chocolate brown with iridescent gold spiral ridges; the inner edge of the empty shell is iridescent blue.  The foot regularly discharges a mucous layer on the shell which apparently makes the animal more difficult for predators to grasp (Ref. 312).					
				
				
						
			
			
			
			
				
					It has a shell size of 3 cm (Ref. 312). Occurs in low intertidal to subtidal levels (Ref. 312).  Commonly found in rocky areas and kelp beds (Ref. 95344).  Omnivorous, feeding on  hydroids, detritus and diatoms (Ref. 312).				
			
			
			
			
			
				Life cycle and mating behavior				
					परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | Eggs | Fecundity | Larvae				
			
			
				
					Members of the order Archaeogastropoda are mostly gonochoric and broadcast spawners.  Life cycle:  Embryos develop into planktonic trocophore larvae and later into juvenile veligers before becoming fully grown adults.				
			
			
			
			
			
				Gallivan, G. and J. Danforth 1999 Phylum Mollusca. Marine Science Institute. Http://216.239.51.104/search?q=cache:EEiLeA0OeAMJ:www2.ucsc.edu/simp/guide.pdf+Nuttalina+californica&hl=tl&gl=ph&ct=clnk&cd=8 [accessed 20/01/06] (संदर्भ 312)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (संदर्भ 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (संदर्भ 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
				CMS (संदर्भ 116361)
			
			
				
					Not Evaluated				
			
			
			
			
			
				Threat to humans  
			
			
				
									
			
			
			
			
			
			
			
			
				Human uses  
			
			
							
			
			
				 | FishSource | 			
			
			
			
			
			
साधन
			
			
			
			
				
					अधिक जानकारी				
				
					 Population dynamicsबाढ़
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
बहुतायत
  Life cycleपुनरुत्पत्तिपरिपक्व अवधिFecundityमछलीऔ का अंडे देनाEggsEgg developmentLarvae   PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  				 
			 
			
			
			
				इंटरनेट स्रोत
			
			
			
			
			
				Estimates based on models
			
			
			
									
						Preferred temperature  					
				 (Ref. 
115969): 5.8 - 15.9, mean 8.9 (based on 406 cells).			
 
			
			
			
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Low vulnerability (10 of 100).					
				
						
						
			
									
						Price category  					
					
					Unknown.