Oxynoe antillarum

Oxynoe antillarum is a species of small sea snail or sea slug, a bubble snail, a marine gastropod mollusk in the family Oxynoidae.

Oxynoe antillarum
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Family: Oxynoidae
Genus: Oxynoe
Species:
O. antillarum
Binomial name
Oxynoe antillarum
Mörch, 1863[1]

Distribution

The type locality for this species is Saint Thomas, U.S. Virgin Islands.[2]

Description

This species has a characteristic mottled white pattern and is covered with translucent white spots. There is a mottled white band that extends along the sides of the head, around the edge of the parapodia, and also along the edge of the foot.[3]

The body is green and oval. The tail is very long, narrow, with a wide longitudinal white dorsal band. The body is closely dotted with green. Tentacles and sides of the head are white, with rather remote green dots arranged in series. Epipodial lobes are with acute, conic, close warts, its edge white with irregular green dots. Sole of the foot yellowish, narrow, the margin with a row of regular close green dots.[4]

The shell is involute, ovate, hyaline-white, swollen above, very slightly contracted immediately below the vertex, shining, with some irregular wrinkles of growth. The spire is concealed. The suture a deep lunate incision. The aperture is very large, broadly ovate below, narrow above. The outer lip is sinuous, produced forward above.[4]

The height of the shell is 6-6.25 mm. The width of the shell is 4.5 mm.[4]

Feeding Habits

O. antillarum feeds on algae, and incorporates the algae's photosynthetic pigments into its mantle. These pigments continue to carry out photosynthesis in the presence of sunlight, allowing O. antillarum to obtain additional nutrition.[5]

Defense

When irritated, O. antillarum will exude a thick white secretion, which contains chemicals unpleasant to many predators. These chemicals are thought to be derived from the algae it consumes.[5]

References

This article incorporates public domain text from the reference.[4]

  1. Mörch O. A. L. (1863). "Revision des especes du genre Oxynoe Rafinesque, et Lobiger Krohn". Journal de Conchyliologie 11: 43-48. Oxynoe antillarum is on the page 46.
  2. Jensen K. R. (November 2007). "Biogeography of the Sacoglossa (Mollusca, Opisthobranchia)" Archived 2013-10-05 at the Wayback Machine. Bonner zoologische Beiträge 55(2006)(3-4): 255–281.
  3. "Opisthobranch of the Week is Oxynoe antillarum".
  4. Pilsbry H. A. (1895-1896). Manual of Conchology. Volume 16. Philinidae, Gastropteridae, Aglajidae, Aplysiidae, Oxynoeidae, Runcinidae, Umbraculidae, Pleurobranchidae. page 164, plate 53, figure 90.
  5. "Opisthobranch of the Week is Oxynoe antillarum". slugsite.us. Retrieved 2016-05-24.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.