Sagittoidea |
Phragmophora |
Spadellidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Benthopelagic. Deep-water; 36°N - 34°N, 118°E - 121°E
Northwest Pacific: Japan.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm Max length : 1.6 cm BL male/unsexed; (Ref. )
Benthopelagic; Mean latitude of occurrence = 35 (N); No known presence in China (Ref. 125708).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Members of the phylum Chaetognatha are hermaphroditic. Mating behavior: A preliminary visual signaling behavior for species recognition is observed to prevent predation. Life cycle: Eggs directly develop into miniature adults (hatchlings).
Miyamoto, H. and S. Nishida 2011 A new deep-sea benthopelagic chaetognath of the genus Bathyspadella (Chaetognatha) with ecological and molecular phylogenetic remarks. Journal of Natural History 45(45-46):2785-2794. (Ref. 91364)
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
Fishing Vulnerability
Low vulnerability (10 of 100).
