Gastropoda |
Nudibranchia |
Janolidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Demersal; depth range ? - 40 m (Ref. 866). Tropical
Southeast Atlantic and Western Indian Ocean: South Africa.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Found from intertidal to at least 40 m. Feeds on arborescent bryozoans, especially Menipea triseriata and Onchoporella buskii (Ref. 866).
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.
Gosliner, T. 1987 Nudibranchs of Southern Arfrica: A guide to opistobranch molluscs of Southern Africa. Sea Challengers and Jeff Hamann in association with the California Academy of Sciences. 136 pp. (Ref. 866)
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
Price category
Unknown.
