Atalodoris jannae

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Atalodoris jannae
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Nudibranchia
Superfamily: Onchidoridoidea
Family: Onchidorididae
Genus: Atalodoris
Species:
A. jannae
Binomial name
Atalodoris jannae
(Millen, 1987) [1]
Synonyms [2]
  • Adalaria jannaeMillen, 1987
  • Knoutsodonta jannae(Millen, 1987) superseded combination

Atalodoris jannae is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Onchidorididae. [2]

Contents

It was frequently mis-identified as Onchidoris muricata . [1] K. jannae is the type species of the genus Knoutsodonta. [3]

Distribution

This species was described from Tyee Point, Copper Cove, British Columbia, Canada, ( 49°22′8″N123°16′5″W / 49.36889°N 123.26806°W / 49.36889; -123.26806 ). It is currently known from Prince William Sound, Alaska south to Lion Rock San Luis Obispo County, California. [4] [1] [5] A specimen from Pillar Point, San Mateo County, California was sequenced for the genes 16S, partial 18S, partial 28S, Histone H3, and the DNA barcoding Folmer region of Cox1 and a specimen from Prince William Sound, Alaska was sequenced for 16S and H3 in an investigation which established the genus Knoutsodonta. [3]

Diet

In British Columbia Knoutsodonta jannae is found feeding on Membranipora serrilamella and Membranipora membranacea on blades of large brown algae. [1] In California orange coloured specimens recorded as Adalaria sp. were found feeding intertidally on the orange bryozoan Lyrula hippocrepsis . [6] Lemon yellow specimens were reported to feed on Reginella mucronata . [1] [7]

References

  1. 1 2 3 4 5 Millen S.V. (1987) The nudibranch genus Adalaria, with a description of a new species from the northeastern Pacific. Canadian Journal of Zoology. 65(11): 2696-2702.
  2. 1 2 MolluscaBase eds. (2025). MolluscaBase. Atalodoris jannae (Millen, 1987). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1565340 on 2025-09-09
  3. 1 2 Hallas J.M. & Gosliner T.M. (2015). Family matters: The first molecular phylogeny of the Onchidorididae Gray, 1827 (Mollusca, Gastropoda, Nudibranchia). Molecular Phylogenetics and Evolution. 88: 16-27
  4. ↑ Behrens, D. W., & Hermosillo, A. (2005) Eastern Pacific nudibranchs, a guide to the opisthobranchs from Alaska to Central America. vi + 137 pp., 314 photos. Sea Challengers, Monterey, California, page 57.
  5. ↑ Rudman, W.B., 2001 (February 25) Adalaria jannae Millen, 1987. [In] Sea Slug Forum. Australian Museum, Sydney.
  6. ↑ Jaeckle, W. B. 1984. The opisthobranch mollusks of Humboldt county, California. Veliger 26(3):207- 213.
  7. ↑ McDonald G. R., and Nybakken.W. 1978. Additional notes on the food of some California nudibranchs with a summary of known food habits of California species. Veliger, 21: 1 10-1 19.
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