''Pseudunela'' is a
genus of minute
sea slugs,
acochlidians, shell-less
marine
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
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* Marine pollution
Military
* ...
or temporary brackish or
brackish gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusks in the clade
Acochlidiacea.
''Pseudunela'' is the only genus in the family Pseudunelidae.
''Pseudunela'' is the type genus of the family Pseudunelidae.
Taxonomy
Pseudunelidae was placed within the superfamily Strubellioidea in the
taxonomy of Bouchet & Rocroi (2005).
Pseudunelidae was subsequently placed within the (unranked)
Hedylopsacea by Schrödl & Neusser (2010).
[Schrödl M. & Neusser T. P. (2010). "Towards a phylogeny and evolution of Acochlidia (Mollusca: Gastropoda: Opisthobranchia)". '' Zoological Journal of the Linnean Society'' 158: 124-154. .]
Species
These are the different species in the genus ''Pseudunela'':
* ''
Pseudunela cornuta
''Pseudunela cornuta'' is a species of minute sea slug, an acochlidian, a shell-less marine and temporarily brackishNeusser T. P., Jörger K. M. & Schrödl M. (2011). "Cryptic Species in Tropic Sands – Interactive 3D Anatomy, Molecular Ph ...
'' (Challis, 1970) - type species of the genus ''Pseudunela'', marine and temporary brackish
* ''
Pseudunela eirene
''Pseudunela'' is a genus of minute sea slugs, acochlidians, shell-less marine or temporary brackish or brackish gastropod mollusks in the clade Acochlidiacea.
''Pseudunela'' is the only genus in the family Pseudunelidae. ''Pseudunela'' is the t ...
'' Wawra, 1988 - The description of ''Pseudunela eirene'' is brief and based on a single specimen with ganglia of the nervous system and stylets of copulatory organs studied on a whole-mount by light microscopy only. No histological sections were made, and the radula was studied light-microscopically after dissolving the soft parts and stylets. Information on other organ systems is absent, and no further specimens are available for study.
Marine species.
* ''
Pseudunela espiritusanta
''Pseudunela espiritusanta'' is a species of sea slug, an acochlidian, a shell-less marine gastropod mollusk in the family Pseudunelidae.
Its specific name is a reference to Espiritu Santo Island in Vanuatu, where it was found.
This species, f ...
'' Neusser & Schrödl, 2009
[Neusser T. P. & Schrödl M. (2009) "Between Vanuatu tides: 3D anatomical reconstruction of a new brackish water acochlidian gastropod from Espiritu Santo. '' Zoosystema'' 31(3): 453-469]
PDF
This species from
Espiritu Santo Island in
Vanuatu lives in
brackish water
* ''
Pseudunela marteli'' Neusser, Jörger & Schrödl, 2011 - marine
* ''
Pseudunela viatoris'' Neusser, Jörger & Schrödl, 2011 - marine
[Neusser T. P., Jörger K. M. & Schrödl M. (2011). "Cryptic Species in Tropic Sands - Interactive 3D Anatomy, Molecular Phylogeny and Evolution of Meiofaunal Pseudunelidae (Gastropoda, Acochlidia)". '' PLoS ONE'' 6(8): e23313. .]
Cladogram
A
cladogram based on sequences of mitochondrial
18S ribosomal RNA
18S ribosomal RNA (abbreviated 18S rRNA) is a part of the ribosomal RNA. The S in 18S represents Svedberg units. 18S rRNA is an SSU rRNA, a component of the eukaryotic ribosomal small subunit (40S). 18S rRNA is the structural RNA for the small c ...
,
16S ribosomal RNA
16 S ribosomal RNA (or 16 S rRNA) is the RNA component of the 30S subunit of a prokaryotic ribosome (SSU rRNA). It binds to the Shine-Dalgarno sequence and provides most of the SSU structure.
The genes coding for it are referred to as 16S rRNA ...
and
cytochrome-c oxidase I (COI) genes showing phylogenic relations of the genus ''Pseudunela'':
References
This article incorporates
CC-BY-2.0 text from reference.
[Neusser T. P., Martin Heß M. & Schrödl M. (11 September 2009) "Tiny but complex - interactive 3D visualization of the interstitial acochlidian gastropod ''Pseudunela cornuta'' (Challis, 1970)". '' Frontiers in Zoology'' 2009, 6: 20. ]
External links
*
{{Taxonbar, from=Q7255734
Pseudunelidae