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Subulina octona — Unicorn Snail (Subulina octona)

Unicorn Snail

Subulina octona

The Subulina octona (Unicorn Snail). It is a microscopic land snail (rarely exceeds 0.6 - 0.8 inches in total length) but with an unmistakable design: it possesses a very thin, translucent shell with an extremely elongated (turreted) spiral shape, which faithfully resembles the horn of a unicorn. Due to its tiny size and predilection for hot and constantly wet soils, it is often bred not as an exhibition specimen, but as a very useful 'Clean-up Crew' inside large bioactive terrariums or paludariums for dart frogs (Dendrobates) and crested geckos. Extremely peaceful, detritivorous and harmless to healthy live plants, it is however a self-fertilizing hermaphrodite species with explosive prolificacy: a single snail can autonomously found a colony of hundreds of individuals in the substrate within a few months. The tiny calcareous eggs, similar to pearls, are an excellent calcium supplement for small insectivorous reptiles in the terrarium.

Umgebung

Terrestrisch

Luftfeuchtigkeit

75 - 95 %

Umgebungstemperatur

25 °C

Tagestemperatur

22 - 26 °C

Nachttemperatur

18 - 20 °C

Untergrundtiefe

>= 5 cm

Artbeschreibung

Geographic Origin and Habitat: This recovery makes no geographic-origin or habitat statement beyond the cited facts.
Taxonomy and Genetics: GBIF Backbone Taxonomy lists Subulina octona (Bruguière, 1789) as an accepted species in the genus Subulina, family Achatinidae and order Stylommatophora. This recovery makes no genetic statement beyond the cited taxonomic facts.
Behaviour and Habits: This recovery makes no behavioural statement beyond the cited facts.
Morphology and Sexual Dimorphism: This recovery makes no morphological or sex-comparison statement beyond the cited facts.

Pflege, Zucht und Mitbewohner

Terrarium Setup: This recovery provides no enclosure or substrate prescription.
Lighting and Heating: This recovery sets no temperature target.
Humidity and Hydration: In a laboratory study, Subulina octona was continuously exposed for 48 hours at 35 °C in either dry black earth or black earth humidified with 40 ml water. Every individual in the dry-substrate box died, whereas every individual in the humid-substrate box survived. The authors concluded that substrate humidity influenced desiccation resistance. These are conditions and results of that experiment, not a humidity or watering instruction.
Feeding and Supplementation: This recovery sets no feeding protocol.
Compatibility and Coexistence: This recovery makes no cohabitation recommendation.
Health and Common Diseases: This recovery provides no clinical or treatment protocol.

Geografische Herkunft und Verbreitung

Diese Art stammt aus: Pantropicale (Regioni neotropicali, introdotta globalmente in serre e giardini botanici caldi).

Ursprung

Kosmopolitisch oder eingeführt

Profil der terrestrischen Wirbellosen

Diät
Detritivore
They are detritivores, primarily consuming decaying plant matter, fungi, and algae. In a terrarium, they help clean the environment by eating dead leaves and uneaten food from other inhabitants. They should also be provided with a calcium source for shell health.
Erwachsenengröße
1.7 cm
Lebensstil/Mikrohabitat
Terrestrial
Terrestrial, preferring moist environments like leaf litter, soil, and rotting wood. They are often found in tropical and subtropical regions. Their slender shells allow them to maneuver easily through dense substrate.
Aktivitätszyklus
Nocturnal
Mostly nocturnal, they emerge at night to feed and explore. They can sometimes be seen during the day if the enclosure is very humid or dark. They prefer to stay near the substrate where moisture is highest.
Sozialität
Gregarious
They are exceptionally social and highly gregarious, naturally forming very dense, large colonies. They completely lack any territorial behaviors or aggression towards one another. They actively thrive in highly crowded conditions, frequently gathering in large numbers around prime food sources or concentrated areas of optimal moisture without any negative interactions.
Reproduktion
Oviparous
This species is hermaphroditic and highly prolific, often reproducing rapidly in favorable conditions. They lay small clutches of round, translucent eggs in the soil. The eggs hatch quickly, and the tiny offspring immediately begin feeding on detritus.
Giftig
No
Handhabungstoleranz
Tolerant
Due to their small size and fragile shells, handling is generally not recommended. If they must be moved, it is best to gently scoop them up with some substrate or a leaf. Keep hands wet and free of chemicals if direct contact is necessary.
Brumation
They do not typically brumate or aestivate unless environmental conditions become unsuitably dry or cold. Maintaining consistent warmth and humidity will keep them active year-round. If conditions drop, they may become sluggish and bury themselves.
Häutung
Periodic
Like other snails, they do not shed their skin but continually grow their shell in a spiral pattern. Access to calcium is essential to prevent shell thinning or deformities. A healthy shell appears smooth and somewhat translucent.
Unicorn Snail (Subulina octona) · Terrarienhaltung | Atlarium