Onchidella celtica

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Onchidella celtica
Onchidella celtica 0377.jpg
live Onchidella celtica
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Order: Systellommatophora
Family: Onchidiidae
Genus: Onchidella
Species:
O. celtica
Binomial name
Onchidella celtica
(Cuvier, 1817 [1]
Synonyms [2]
  • Onchidella remanei Er. Marcus & Ev. Marcus, 1956
  • Onchidium celticum Cuvier in Audouin & Milne-Edwards, 1832
  • Onchidium nanum Philippi, 1844
  • Onchidium tuberculatum Taslé, 1870
  • Peronia parthenopeia delle Chiaje, 1841

Onchidella celtica is a species of air-breathing sea slug, a shell-less marine pulmonate gastropod mollusk in the family Onchidiidae. [2]

Contents

The complete nucleotide sequence of the mitochondrial genome of Onchidella celtica has been available since 2008. [3]

Description

Onchidella celtica is up to 12mm long and its oval body has a deep olive to black colour. The mantle is covered with large tubercles which concealed the head and the foot of the animal when motionless. The eyes are at the tips of two short and thick tentacles and are visible from above when the animal is crawling. [4]

Distribution

This species occurs locally on the East Atlantic coastline, from western Scotland, western England and the Channel Islands, south to Spain and the Azores, including:

Habitat and ecology

This air-breathing sea slug lives in the intertidal zone on rocky shorelines. It is exposed on rocky shores at low tides and retreats to crevices when the tide rises. [4] It can absorb small amounts of dioxygen trough its mantle, allowing it to stay submerged during high tide. However, this secondary "breathing" doesn't allow it to be active underwater. [5] Onchidella celtica hibernates during winter.

It lives gregariously in sheltered crevices during high tide, and travel to feed during high tide. This species shows a "homing" ability, as it returns to its same crevice at every high tide. [5]

This sea slug feeds on small algae and diatoms. It is noted that sand and detritus is engulfed when feeding, helping it grind its food as a physical help for digestion. [5]

When bothered, Onchidella celtica can squirt out a repulsive substance. [5]

Reproduction

This species is hermaphrodite, using reciprocal mating to produce between 60 and 100 tubular eggs gathered as a jelly mass. It reproduces during the summer. Hatchings resembles small adults. [5]

Related Research Articles

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<i>Onchidella</i> Genus of gastropods

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<i>Onchidella binneyi</i> Species of gastropod

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Onchidella reticulata is a species of air-breathing sea slug, a shell-less marine pulmonate gastropod mollusk in the family Onchidiidae.

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<i>Onchidella marginata</i> Species of gastropod

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<i>Peronia platei</i> Species of gastropod

Peronia platei is a species of slug, a marine gastropod mollusk in the family Onchidiidae, one of the families of sea slugs. Nine species of Peronia are recognized; the way to tell them apart is by DNA sequencing by mitochondrial and nuclear sequence or checking their internal anatomy. This species has hermaphroditic parts in the posterior regions of the deferent duct and straight oviduct. The male part is the muscular sac of the accessory penial gland in the anterior area. It is distributed across the entire tropical and subtropical Indo-West Pacific, from South Africa to Hawaii.

References

  1. ↑ Cuvier G. (1817). Le règne animal distribué d'après son organisation, pour servir de base à l'histoire naturelle des animaux et d'introduction à l'anatomie comparée. Avec figures, dessinées d'après nature. Tome II, contenant les reptiles, les poissons, les mollusques et les annélides. pp. j-xviij [= 1–18], 1–532. Paris. (Deterville).
  2. 1 2 Onchidella celtica (Cuvier, 1817) . 4 January 2011. Retrieved through: World Register of Marine Species .
  3. ↑ Grande C., Templado J. & Zardoya R. 2008. Evolution of gastropod mitochondrial genome arrangements. BMC Evolutionary Biology 2008, 8:61. doi : 10.1186/1471-2148-8-61
  4. 1 2 Hayward, Peter J.; Ryland, John S. (2 February 2017), "The Marine Environment of North-West Europe", Handbook of the Marine Fauna of North-West Europe, Oxford University Press, pp. 1–18, doi:10.1093/acprof:oso/9780199549443.003.0001, ISBN   9780199549443
  5. 1 2 3 4 5 "Notes on the natural history of the celtic sea-slug, Onchidella celtica (Cuvier, 1817)". Sea-Nature Studies. Retrieved 14 December 2023.


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