Heterokrohnia involucrum   Dawson, 1968

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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Sagittoidea | Phragmophora | Eukrohniidae

Environment: milieu / climate zone / depth range / distribution range Ecology

Bathypelagic; depth range 1800 - 2670 m (Ref. 3682).  Deep-water; 80°N - 20°N, 0°E - 0°E

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Arctic Ocean: Canada Basin.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 1.6 cm BL male/unsexed; (Ref. 1643)

Biology     Glossary (e.g. epibenthic)

Maximum depth from Ref. 116489. Benthopelagic; Mean latitude of occurrence = 50 (N); No known presence in China (Ref. 125708). Bathypelagic (Refs. 3682, 116366). Depth estimate based on ecology.

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).

Main reference References | Coordinator | Collaborators

Kapp, H. and W. Hagen. 1985. (Ref. 1643)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance
References
Mass conversion
Collaborators
Pictures

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Vulnerability (Ref. 71543): Low vulnerability (10 of 100).
Price category (Ref. 80766): Unknown.