Okenia hiroi   (Baba, 1938)

Hiro's sea slug
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Gastropoda | Nudibranchia | Goniodorididae

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

Demersal; depth range 2 - 19 m (Ref. 79924).  Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Northwest Pacific: Japan, South Korea, and Hong Kong.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm

Short description Morphology

Bright pink, having a row of finger-like papillae around the edge of the mantle. Papillae are also pink, with a whitish tip. There is one papilla in the center of the back and a few extra on each side, forming a sparse inner row of papillae. Few small pink gills form a row across the mantle (Ref. 79924). This species does not have oral tentacles (Ref. 125532).

Biology     Glossary (e.g. epibenthic)

Occur in rock reef areas, to depths of 20 meters (Ref. 125532). Feeds on similarly colored pink encrusting bryozoan (Ref. 79924).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Members of the order Nudibranchia are simultaneous hermaphrodites. Mating behavior: Both individuals darts their penis toward each other to induce one to act as a male and the other as the female. The victorious one to penetrate the body wall is the dominant male. Life cycle: Eggs are deposited on a substratum where they develop and hatch into (planktonic) vestigial veliger larval stage and further grow as adults.

Main reference References | Coordinator | Collaborators

Sachidhanandam, U., R.C. Willan and L.M. Chou. 2000. (Ref. 78073)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless

Human uses


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Ecology
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Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance
References
Mass conversion
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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